Physics High School

When ultraviolet light with a wavelength of 400 nm falls on a certain metal surface, the maximum kinetic energy of the emitted photoelectrons is measured to be 1.10 eV .
What is the maximum kinetic energy of the photoelectrons when light of wavelength 285 nm falls on the same surface?

Answers

Answer 1
In the photoelectric effect, the energy of the incoming photon is used partially to extract the photoelectron from the metal (work function) and the rest is converted into kinetic energy of the photoelectrons:
[tex]hf=\phi + K_{max}[/tex] (1)
where
h is the Planck constant
f is the photon frequency
[tex]\phi[/tex] is the work function
[tex]K_{max}[/tex] is the maximum kinetic energy of the photoelectrons

In the first part of the problem, we have light with wavelength [tex]\lambda=400 nm=400 \cdot 10^{-9} m[/tex], so the photons have frequency 
[tex]f= \frac{c}{\lambda}= \frac{3 \cdot 10^8 m/s}{400 \cdot 10^{-9} m}=7.5 \cdot 10^{14}Hz [/tex]
where c is the speed of light; and therefore the energy of the photons is
[tex]E=hf=(6.6 \cdot 10^{-34}Js)(7.5 \cdot 10^{14} Hz)=5.0 \cdot 10^{-19} J[/tex]
Converted into electronvolts ([tex]1 eV= 1.6 \cdot 10^{-19} J[/tex]):
[tex]E=5.0 \cdot 10^{-19} J =3.12 eV[/tex]

The maximum kinetic energy of the photoelectrons in this case is 
[tex]K_{max}=1.10 eV[/tex], so we can find the work function of the metal by re-arranging eq. (1):
[tex]\phi = hf-K_{max} = 3.12 eV-1.10 eV=2.02 eV[/tex]


In the second part of the problem, we have light with wavelength [tex]\lambda=285 nm=285 \cdot 10^{-9}m[/tex], which corresponds to a frequency of
[tex]f= \frac{c}{\lambda}= \frac{3 \cdot 10^8 m/s}{285 \cdot 10^{-9}m}=1.05 \cdot 10^{15} Hz [/tex]
And so the photons have energy
[tex]E=hf=(6.6 \cdot 10^{-34} Js)(1.05 \cdot 10^{15}Hz)=6.93 \cdot 10^{-19} J[/tex]
which corresponds to 
[tex]E=6.93 \cdot 10^{-19}J = 4.33 eV[/tex]

And if we use again eq.(1), we can now find the new maximum kinetic energy of the photoelectrons:
[tex]K_{max}=hf-\phi=4.33 eV-2.02 eV=2.31 eV[/tex]

Related Questions

*PLEASE HELP WILL GIVE BRAINLIEST*

List the following events in the order that they happen as a sound wave is generated and transmitted through the air.

1. The object's energy transfers to the surrounding air particles.

2. Something causes an object to vibrate.

3. Vibrating air particles bump into other air particles.

4. Air particles around the object begin to vibrate.

5. Energy transfers outward from air particle to air particle.

Answers

Answer: The order is 2,1,5,4,3

Explanation: Hope This helps.

The order in which events occur in the generation and transmission of a sound wave begins with an object vibrating, which transfers energy to air particles, leading to the vibration of surrounding air and the eventual transfer of energy from particle to particle, forming a sound wave.

Sound is produced and travels through a medium via a series of events that can be listed in sequential order:

Something causes an object to vibrate.

The object's energy transfers to the surrounding air particles.

Air particles around the object begin to vibrate.

Vibrating air particles bump into other air particles.

Energy transfers outward from air particle to air particle.

For example, when a tuning fork is struck, its tines vibrate and cause air molecules nearby to oscillate. These vibrations propagate outward as successive air molecules collide, similar to ripples in water when a stone is thrown. This movement of air molecules forms a sound wave, which can be detected by the ear as changes in air pressure and interpreted as sound.

Which of the following best describes alternating current? current that increases and decreases in temperature current that constantly turns on and off current in which charges change direction current that gains and loses electrons

Answers

Answer: Charge that jiggles  back and forth very quickly.

Explanation: Alternating current is an electric current that peroidically reverses direction  .

A P E X

The following best describes alternating current, Charge that jiggles  back and forth very quickly.

What increases or decreases alternating current?

A transformer is a machine that either boosts or reduce the voltage of alternating current.

Step-up transformer rises the voltage of alternating current whereas step-down transformer reduces the voltage of alternating current.

Thus, Alternating current is an electric current that peroidically reverses direction.

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What would you need to know to calculate the angular momentum of a man on a Ferris wheel?

Answers

The angular momentum calculated with respect to the axis of rotation of an object is given by:
[tex]L=mvr[/tex]
where m is the object's mass, v is its tangential speed, and r is its distance from the axis of rotation.

In case of a man on a Ferris wheel, we need to have these quantities in order to calculate his angular momentum. These quantities corresponds to:
- m, the mass of the man
- v, the tangential speed of the wheel at its edge
- r, the radius of the wheel

It is possible to calculate the angular momentum even if we don't know v, the tangential speed. In this case, we need to know at least the angular velocity [tex]\omega[/tex] (because from this relationship we can find the tangential speed: [tex]v=\omega r[/tex]) or the period of rotation of the wheel, T (because we can find the angular velocity from it: [tex]\omega= \frac{2 \pi}{T} [/tex]).

To calculate the angular momentum of a man on a Ferris wheel you need to know the mass distribution, radius, initial and final angular velocity, and angular acceleration of the system.

Angular momentum of a man on a Ferris wheel can be calculated using the formula:

Angular momentum = Moment of inertia x Angular velocity

To calculate this, you would need to know the mass distribution, radius, initial and final angular velocity, and angular acceleration of the system.

you stretch a spring by a distance of 0.3 m. the spring has a spring constant of 440 n/m. when you release the spring, it snaps back. what is the kinetic energy of the springs as it reaches its natural length?

Answers

Answer:

19.8 J

Explanation:

According to the law of conservation of energy, the total mechanical energy of the spring (sum of kinetic energy and elastic potential energy) must be conserved:

[tex]K_i + U_i = K_f + U_f[/tex] (1)

where we have

[tex]K_i[/tex] is the initial kinetic energy of the spring, which is zero because the spring starts from rest (2)

[tex]U_i[/tex] is the elastic potential energy of the spring when it is fully stretched

[tex]K_f[/tex] is the kinetic energy of the spring when it reaches the natural length

[tex]U_f[/tex] is the elastic potential energy of the spring when it reaches its natural length, which is zero because the stretch in this case is zero (3)

So

[tex]U_i = \frac{1}{2}k(\Delta x_i)^2[/tex]

where

k = 440 N/m is the spring constant

[tex]\Delta x_i = 0.3 m[/tex] is the initial stretching of the spring

Substituting,

[tex]U_i = \frac{1}{2}(440)(0.3)^2=19.8 J[/tex]

And so using eq.(1) and keeping in mind (2) and (3) we find

[tex]K_f= U_i = 19.8 J[/tex]

How far the Electromagnetics effects be found

Answers

The electromagnetic effects extends indefinitely throughout space. So it has not limit and it describes the electromagnetic interaction.

The electromagnetic effect has no limits but it decreases inversely with square distance. 

E.M.F = k/d²
where k is the constant of proportionality and d is the distance from the source of electromagnetic field. 


PLEASE HELP!!!! 15 point!!!!!


Scientist tested the effect of a fertilizer on the growth of plants. They had two sets of plants Group A which gets fertilizer water & and Group B which gets only water and sun (but equal amounts to Group A)

1. Explain how this scenario is a controlled experiment and identify the manipulated variable?

2. If the scientist only performed one experiment but it supported their hypothesis why can it not be considered a theory?

Answers

ANSWER 1: The manipulated variable is the fertilizer since the other factors (water and sunlight) are given in equal amounts. It is a controlled experiment because one group receives fertilizer while the other does not. Any differences in growth should be due to either having fertilizer or not.

ANSWER 2: In order for it to be a theory, it has to be tested numerous times by multiple scientists.

Hope it helps. God bless
2_ it doesn't because scientist have to do multiple tests and they have to get the same results

1_i don't know for sure

If a 100N weight sits in an express elevator what will be the weight when the elevator is traveling at a constant speed

Answers

This is a "trick" question.

If the elevator is traveling at constant speed, it means it is at rest. This means anything inside the elevator traveling at constant speed, weights the same as in an elevator not moving -also at rest-.

So the 100N weight's weight doesn't change in an elevator traveling at constant speed.
Final answer:

The weight of the 100N weight will remain the same when the elevator is travelling at a constant speed.

Explanation:

When the elevator is travelling at a constant speed, the weight of the 100N weight will remain the same. The weight of an object is the force exerted on it due to gravity, and this force does not change regardless of the elevator's speed or direction. So, the weight of the object will still be 100N.

If an astronaut throws an object in space, the object’s speed will _____

Answers

the object's speed will not change.

In fact, after the astronaut throws the object, no additional forces will act on it (since the object is in free space). According to Newton's second law:
[tex]\sum F=ma[/tex]
where the first term is the resultant of the forces acting on the body, m is the mass of the object and a its acceleration, we see that if no forces act on the object, then the acceleration is zero. Therefore, the acceleration of the object is zero, and its velocity remains constant.

A 0.500-kg glider, attached to the end of an ideal spring with force constant undergoes shm with an amplitude of 0.040 m. compute (a) the maximum speed of the glider; (b) the speed of the glider when it is at (c) the magnitude of the maximum acceleration of the glider; (d) the acceleration of the glider at (e) the

Answers

There is a missing data in the text of the problem (found on internet):
"with force constant k=450N/m"

a) the maximum speed of the glider

The total mechanical energy of the mass-spring system is constant, and it is given by the sum of the potential and kinetic energy:
[tex]E=U+K= \frac{1}{2}kx^2 + \frac{1}{2} mv^2[/tex]
where
k is the spring constant
x is the displacement of the glider with respect to the spring equilibrium position
m is the glider mass
v is the speed of the glider at position x

When the glider crosses the equilibrium position, x=0 and the potential energy is zero, so the mechanical energy is just kinetic energy and the speed of the glider is maximum:
[tex]E=K_{max} = \frac{1}{2}mv_{max}^2 [/tex]
Vice-versa, when the glider is at maximum displacement (x=A, where A is the amplitude of the motion), its speed is zero (v=0), therefore the kinetic energy is zero and the mechanical energy is just potential energy:
[tex]E=U_{max}= \frac{1}{2}k A^2 [/tex]

Since the mechanical energy must be conserved, we can write
[tex] \frac{1}{2}mv_{max}^2 = \frac{1}{2}kA^2 [/tex]
from which we find the maximum speed
[tex]v_{max}= \sqrt{ \frac{kA^2}{m} }= \sqrt{ \frac{(450 N/m)(0.040 m)^2}{0.500 kg} }= 1.2 m/s[/tex]

b)  the speed of the glider when it is at x= -0.015m

We can still use the conservation of energy to solve this part. 
The total mechanical energy is:
[tex]E=K_{max}= \frac{1}{2}mv_{max}^2= 0.36 J[/tex]

At x=-0.015 m, there are both potential and kinetic energy. The potential energy is
[tex]U= \frac{1}{2}kx^2 = \frac{1}{2}(450 N/m)(-0.015 m)^2=0.05 J [/tex]
And since 
[tex]E=U+K[/tex]
we find the kinetic energy when the glider is at this position:
[tex]K=E-U=0.36 J - 0.05 J = 0.31 J[/tex]
And then we can find the corresponding velocity:
[tex]K= \frac{1}{2}mv^2 [/tex]
[tex]v= \sqrt{ \frac{2K}{m} }= \sqrt{ \frac{2 \cdot 0.31 J}{0.500 kg} }=1.11 m/s [/tex]

c) the magnitude of the maximum acceleration of the glider;

For a simple harmonic motion, the magnitude of the maximum acceleration is given by
[tex]a_{max} = \omega^2 A[/tex]
where [tex]\omega= \sqrt{ \frac{k}{m} } [/tex] is the angular frequency, and A is the amplitude.
The angular frequency is:
[tex]\omega = \sqrt{ \frac{450 N/m}{0.500 kg} }=30 rad/s [/tex]
and so the maximum acceleration is
[tex]a_{max} = \omega^2 A = (30 rad/s)^2 (0.040 m) =36 m/s^2[/tex]

d) the acceleration of the glider at x= -0.015m

For a simple harmonic motion, the acceleration is given by
[tex]a(t)=\omega^2 x(t)[/tex]
where x(t) is the position of the mass-spring system. If we substitute x(t)=-0.015 m, we find 
[tex]a=(30 rad/s)^2 (-0.015 m)=-13.5 m/s^2[/tex]

e) the total mechanical energy of the glider at any point in its motion. 

we have already calculated it at point b), and it is given by
[tex]E=K_{max}= \frac{1}{2}mv_{max}^2= 0.36 J[/tex]
Final answer:

To compute the maximum speed, use the equation vmax = Aω. At x = 0, the speed is 0. The maximum acceleration is given by amax = Aω².

Explanation:

To compute the maximum speed of the glider, we can use the equation vmax = Aω, where A is the amplitude (0.040 m) and ω is the angular frequency. The angular frequency is given by ω = √(k/m), where k is the force constant (N/m) and m is the mass (kg). In this case, k = 80 N/m and m = 0.500 kg.

For part (b), the speed of the glider when it is at x = 0 (the equilibrium position) is 0. This is because the velocity is at a maximum when the glider passes through the equilibrium position, and at that point, it changes direction.

The maximum acceleration of the glider can be found using the equation amax = Aω². The magnitude of the maximum acceleration occurs at the position x = -A, so we can substitute -A for x in the equation. Finally, the acceleration of the glider at x = -A can be found by substituting this value into the equation a = -Aω².

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Two people push on the same door from opposite sides as shown they will only see the door move when

Answers

one of them overpowers the other

Answer: C.

Explanation: The only way that they will be able to see the door move is if only ONE of them exert more force than the other.

You can see that when they both exert the same force on the door, the forces are balanced, and cancel eachother out.

Hope this helped.

Have a nice day. :)

((((Psychology))))According to Rubin, the desire to share your innermost thoughts and feelings is:

A. attachment.
B. caring.
C. intimacy.
D. all of the above.

Answers

According to Rubin, the desire to share your innermost thoughts and feelings is

c. intimacy

Hope this helps.
The answer is C. Intimacy

which statement best describes Gay-Lassac’s law

Answers

Gay-Lussac’s Law is a component of the Ideal Gas Law that deals with the relationship between the change of pressure and temperature while holding volume constant. The equation looks like this:

P1 P2
— = —
T1 T2

where P1 and T1 represent the pressure and temperature before the change, and P2 and T2 represent the pressure and temperature after.
Final answer:

Gay-Lussac's law states that the pressure of a given amount of gas is directly proportional to its temperature on the Kelvin scale, provided the volume is constant. This was initially discovered by Guillaume Amontons and later refined by Joseph Louis Gay-Lussac. The mathematical representation is P proportional to T, P = constant × T or P = kx T.

Explanation:

The best description of Gay-Lussac's law is that it states that the pressure of a given amount of gas is directly proportional to its temperature on the Kelvin scale when the volume is held constant. Guillaume Amontons was the first to empirically establish this relationship between pressure and temperature of a gas around 1700, and Joseph Louis Gay-Lussac defined the relationship more accurately around 1800. This relationship is expressed mathematically as PxT or P = constant × T or P = kx T.

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Why is the reactor coolant water kept contained within the primary loop instead of allowing it to mix with the feed water and leave through the cooling tower? it is contaminated and radio active?

Answers

For the answer to the question above, I the answer is yes, It is both contaminated and radioactive at the same time. That's why they keep the water spinning.I hope my answer helped you. Have a nice day!

Answer:

Yes, It is contaminated and radio active

Explanation:

The coolant in the primary loop is actually in contact with the reactor fuel. So it will have some trace amount of the reactor fuel and all the other radioactive by products like cobalt.

Also the neutrons in the reactor will convert the hydrogen in the water into radioactive tritium. and the oxygen into radioactive nitrogen.

This is why the primary loop water is kept isolated from the feed water.

Red cabbage juice can be used as an acid-base indicator. When a solution is highly acidic, the juice turns red. As the acidity decreases and the solution becomes basic, the color changes from red to violet to green to yellow. Red cabbage juice is used as an indicator of some common household products. Which product will turn yellow when cabbage juice is added? A) coffee B) ammonia C) vinegar D) bottled water

Answers

Answer:

B) Ammonia

Explanation:

Red cabbage juice is an acid-base indicator. It turns red for acidic medium and as the pH increase it turns to violet, green and then yellow.

It means for a basic solution, it would turn yellow. From the given options, coffee and vinegar are acidic. Therefore, they would turn red. Bottled water is neutral. Ammonia is a weak base. It would the indicator yellow.

The ideal mechanical advantage of a machine is 3.2 and its output distance is 2.5 meters. What is the input distance?

Answers

30 because you have 3.2 outputs don't mean others don't

A force of 50 pounds is directed 30 from the horizontal, find the vector that represents this force.

Answers

I assume it is directed 30 degrees above the positive x-axis. F = 50 pounds F_x = 50 cos(30) pounds = 43.3 pounds F_y = 50 sin(30) = 25 pounds Let i and j be unit vectors along the x and y axes, respectively.  Then F = F_x i + F_y j = (43.3 i + 25 j) pounds

Which of the following best describes acceleration

A. S/M

B. M/S

C. M2

D. M/S2

Answers

Acceleration is best described as : m/s2

Reason :

Acceleration (a) = velocity (v) /time (t)
a = m/s /s
a = m/s2

When the amount of a radioactive substance is reduced by 50%, what has occurred? a half-life beta radiation alpha radiation gamma radiation?

Answers

A radioactive material is the heavy nucleus material. When the amount of a radioactive substance is reduced by 50%, a half life has occurred.

What is half life?

In radioactivity, the time interval required for one-half of the atomic nuclei of a radioactive sample to decay .

The time interval required for the number of disintegrations per second of a radioactive material or 50% decomposed is equal to the half life of that material.

Thus, when the amount of a radioactive substance is reduced by 50%, a half life has occurred.

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Which type of mirror causes light rays to refract away from each other?

Answers

Mirrors don't cause refraction.

A convex mirror could cause parallel rays to REFLECT away from each other.

What causes the northern and southern halves of the planet to experience winter and summer at opposite times?

Answers

The angle of the Earth on its axis making the sun to beam on the Northern and Southern Hemispheres differently. When one side is fronting the sun, the other is on the side the darkness, so, when it's Winter in the northern half, it's Summer in the southern half. 

To be topologically equivalent which deformation is not allowed

Answers

I just took this quiz and the answer is tearing. If you want to be topologically equivalent, tearing is not allowed. Hope this helps someone!

The slope of a Velocity versus Time graph will tell you the object’s what?

A) Acceleration
 
B) Change in position
 
C) Velocity

Thanks

Answers

Hope it helped you.

My name is Charlie.

Today this question is about science,or chemistry.

A. Acceleration is a correct answer. Acceleration is a rate of change in velocity. 

It change in velocity/change in time. Next, to slope will be indicated by the acceleration.

B Change in position is a incorrect answer.

C. Velocity is a incorrect answer. Velocity is a displacement of an object during a specific unit of time. It can used two measurements are needed to determine velocity. It displacement or by the time. Displacement it includes a direction, so the velocity will also includes a direction. It can used speed with direction. Velocity it can be average velocity or an instantaneous velocity.

-Charlie

Have a great day!

Thanks!

Without the skeletal system, the body could not fight off infection. Please select the best answer from the choices provided. T F

Answers

Answer:

TRUE

Explanation:

got it right on edge 2022.

The statement Without the skeletal system, the body could not fight off infection is false.

The skeletal system provides support, protection, and movement for the body, and it also plays a role in the production of blood cells through bone marrow. However, the primary function of fighting off infections is carried out by the immune system, which includes the lymphatic system, the spleen, the thymus, and bone marrow, among other components. While bone marrow is part of the skeletal system and is crucial for producing immune cells, the skeletal system itself is not the sole or primary defense against infection. Therefore, the statement is incorrect because it overstates the role of the skeletal system in immune function. The immune system, not the skeletal system, is specialized to fight off infections

What aspects of bone’s structure make it stronger than concrete? think about the engineering design of bone. use the terms tensile strength and compressional strength in your answer?

Answers

Bone's structure is optimized for strength due to its complex arrangement of organic and inorganic materials.

Tensile strength is a key factor: collagen fibres in bone resist pulling forces, making it flexible yet tough.

Compressional strength is achieved through the dense arrangement of mineralized hydroxyapatite crystals, providing resistance against crushing loads.

This combination of tensile and compressional strength allows bone to withstand bending, twisting, and impact. In contrast, concrete primarily relies on compressional strength, making it brittle and prone to fracture under tension.

Bone's intricate structure, with collagen providing flexibility and hydroxyapatite providing rigidity, makes it significantly stronger and more resilient than concrete in various mechanical scenarios.

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Bones have a higher tensile and compressional strength than concrete due to their composite structure of collagen fibers and mineralized matrix, along with a complex microarchitecture designed to adapt to mechanical stresses. These aspects make bones robust and efficient weight-bearing structures.

The aspects of bone's structure that make it stronger than concrete are related to its complex microarchitecture and composite nature, which enable it to have a high tensile strength and compressional strength. Bones are formed from collagen, much like the steel rebar in concrete, and a mineralized matrix rich in calcium, which bears similarity to the concrete itself. However, the collagen provides flexibility and tensile strength, while the inorganic salts provide compressional strength, making bones robust and capable of adapting to mechanical stresses.

The ultimate strength of human bones, particularly in the femur, is impressive, with an ultimate compressive strength of 205 MPa and an ultimate tensile strength of 135 MPa. This strength is a result of bones being weight-bearing structures, designed to carry loads much like the columns in a building or fibrous structures like trees. The engineering design of bones takes into account different stresses on different parts of the body, which is why the structure of the femur can vary from thin sheets separated by marrow to cylindrical shapes filled with or without marrow.
The elastic modulus of bone also varies based on whether it is under tension or compression, highlighting the bone's capability to withstand different directional forces. Such properties make bones incredibly efficient at carrying weight and resisting different types of stresses without fracturing under normal circumstances.

Find the total translational kinetic energy of 1.5 l of oxygen gas held at a temperature of 0°c and a pressure of 0.8 atm.

Answers

The ideal gas law states that:
[tex]pV=nRT[/tex]
where
p is the gas pressure
V is its volume
n is the number of moles
R is the gas constant
T is the absolute temperature

However, this equation can be also rewritten as
[tex]PV= \frac{2}{3}NK [/tex] (1)
where
N is the number of molecules in the gas, and K is the average kinetic energy of the molecules. Therefore, NK represents the total kinetic translational energy of the gas.

For the gas in our problem,
[tex]p=0.8 atm = 8.08 \cdot 10^4 Pa[/tex]
[tex]V=1.5 L =1.5 \cdot 10^{-3} m^3[/tex]
So, the total translational kinetic energy of the gas is (using eq.(1) )
[tex]NK= \frac{3}{2}pV= \frac{3}{2}(8.08 \cdot 10^4 Pa)(1.5 \cdot 10^{-3} m^3)=181.8 J [/tex]
Final answer:

To calculate the total translational kinetic energy of 1.5 liters of oxygen gas at 0°C and 0.8 atm, use the ideal gas law to find the number of moles and then apply the translational kinetic energy equation (KEtrans = (3/2)nRT).

Explanation:

To find the total translational kinetic energy (KEtrans) of 1.5 liters of oxygen gas at 0°C (273 K) and 0.8 atm, we can use the ideal gas law and the equipartition theorem. The ideal gas law PV = nRT can give us the number of moles of oxygen gas when rearranged to n = PV/RT. Here, P is the pressure, V is the volume, R is the ideal gas constant, and T is the temperature.

Once the moles (n) are calculated, the translational kinetic energy per mole of a gas can be found using the equation KEtrans = (3/2)nRT, where n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin. By substituting the values into the equation, we can find the total translational kinetic energy of the gas sample.

Which is a narrow band of high winds located near the top of the troposphere? a sea breeze a jet stream polar easterly a trade wind?

Answers

The answer is Jet Stream.  A narrow band of high winds located near the top of the troposphere is Jet Stream.  They are narrow bands of strong wind in the upper levels of the atmosphere. The winds blow from west to east in jet streams but often shifts to the north and south. They follow the boundaries between hot and cold air.

Answer:

jet streams

Explanation:

I know the anwser

A patient needs surgery to open a clogged heart artery. This patient should look for a surgeon who is an expert in which of the following?

Answers

Following for what? What is the following?

The answer is B i know this because

superficial anatomy of the circulatory system

functional anatomy of the circulatory system

superficial anatomy of the nervous system

functional anatomy of the nervous system

its not a nervous system part so there goes the last two and superfical means from the outside of the body like skin and hair and the reproductive like testicals and and the ovarys stuff like that thus leaves your answer with the only logical one {functional anatomy of the circularory system}.

How does electromagnetic induction happen?

Answers

it occurs whenever a magnetic field and an electric conductor move relative to one another so the conductor lines in force in the magnetic field.

Determine the pressure exerted by 2.50 mol of gas in a 2.92 l container at 32 oc.

Answers

I guess you meant "at [tex]32^{\circ}C[/tex]"

Solution:
we can solve the problem by using the ideal gas law, which states:
[tex]pV=nRT[/tex]
where
p is the gas pressure
V its volume
n the number of moles
R the gas constant
T the absolute temperature

Before using this equation, we have to convert the temperature in Kelvin:
[tex]T=32^{\circ}C+273 = 305 K[/tex]
and the volume in [tex]m^3[/tex]:
[tex]V=2.92 L= 2.92 dm^3 = 2.92 \cdot 10^{-3} m^3[/tex]

So now we can re-arrange the ideal gas equation to find the pressure exerted by the gas, p:
[tex]p= \frac{nRT}{V}= \frac{(2.50 mol)(8.31 J/mol K)(305 K)}{2.92 \cdot 10^{-3} m^3}= 2.17 \cdot 10^7 Pa[/tex]

Which would most likely cause molten rock material to become glassy igneous rock?

Answers

The cooling on earth's surface (extrusive)  makes a molten rock to become glassy. The lava cools so fast that crystals don't have time to form, which makes it glassy. Hope this helps!
Other Questions
President Kennedy sought to continue what policy started by Truman in Vietnam 18. you work a part-time job earning $6.80/hr with tips that average $2.30/hr. you work 20 hr/wk and your deductions are FICA (7.65%), federal tax withholding (8.95%), and state tax withholding (6.1%). how much are you allowed in housing expenses per month?Im asking for help not for you to do it. A person does not "have" or "not have" a personality trait but instead can possess varying amounts of it. this is because personality traits reflect ____________________ rather than distinct personality types. plz help me it sounds confusing A suit regularly costs $389.90., Bob buys it on sale for $ 265.00 . How much does he save? The development of the Amazon Basin has _____.been stoppedhelped Indian culturesmade Brazil a world powercaused soil erosion Which of the following was a cause of democratic reforms in England?A.The House of Lords could veto the House of Commons.B.There was only one house, with the king holding all the power.C.Only small towns were allowed to vote for representatives.D.The House of Commons often outnumbered the House of Lords. Americans ______.a. are much more likely to belong to interest groups than are citizens of other nationsb. are much less likely to belong to interest groups than are citizens of other nationsc. don't have any choices when it comes to joining an interest groupd. are willing to join groups that are not involved in politics, but they shy away from groups that engage in political activitye. prefer to belong to political groups rather than other groups According to psychologist ________'s sociobiological model, individuals with borderline personality disorder inherit a tendency to overreact to stress and experience lifelong difficulties with regulating their emotions. support for this model comes from twin studies that suggest borderline personality traits are substantially heritable. Which of the following is not a credit card perk? O A. College points O B. Miles O C. Cash back O D. Balance transfer enter the word you received when you completed the Africans push for independence activity ________.(k12) What is the IMA of the doorknob shown? 1.53615 When a hurricane moves onto land, it rapidly loses its punch; that is, the storm declines in intensity. which of the factors listed below contribute to this loss of punch? all answer choices are correct. lack of warm, moist air cooling from below by the land surface friction? All federally chartered banks are required to join the federal reserve system, as mandated by the ________.federal policy actfederal monetary actfederal reserve act of 1913federal bank adjustment act of 1927 The variable z varies jointly with x and y. also, z = -75 when x = 3 and y = -5. what equation describes this variation? When telling a story during a presentation, it is best to avoid describing hurdles that your character must overcome, to avoid souring the mood? 3. Create at least one goal for each of the following wellness categories. Personalize each of your goals for the time enrolled in the course. Be sure that each goal is measurable, attainable, and has a specific deadline. Also, be sure each goal is written in complete sentences. Physical Wellness Goal:Emotional Wellness Goal: Social Wellness Goal:Academic Wellness Goal: To what volume will a sample of gas expand if it is heated from 50.0c and 2.33 l to 500.0c? Please anwser will be thanked which cell organelle provides instructions to the Golke apparatus on where the substances should be delivered?