When touched by a plastic straw, the metal sphere will do what?
Tony made 14 liters of lemonade for a party. His guests drank 9500 mL of the lemonade. After the party Tony had mL of lemonade left over.
Answer:
4500
Explanation:
For a certain transverse wave, the distance between two successive crests is 1.20 m and eight additional crests pass a given point along the direction of travel every 13.00 s. calculate the wave speed.
The wave speed is calculated using the frequency and the wavelength. With the provided distance between crests (1.20 m) and the time for crests to pass (13 s), the wave speed is found to be approximately 0.8308 m/s.
Explanation:The distance between two successive crests of a transverse wave is equal to one wavelength. If eight additional crests pass a given point in 13 seconds, it means that nine crests in total pass that point in 13 seconds because the first crest is observed at the beginning of the timing. The speed of the wave (v) can be calculated using the formula v = frequency x wavelength. Here, the wavelength (λ) is given as 1.20 meters.
To find the frequency, we use the number of waves passing a point divided by the time taken. Therefore, the frequency (f) is 9 crests / 13 seconds = 0.6923 Hz (where Hz represents Hertz or cycles per second).
Using the wave speed formula, we obtain the speed: v = 0.6923 Hz x 1.20 m = 0.8308 m/s. Thus, the wave speed is approximately 0.8308 meters per second.
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Select all that apply.
Images produced by a flat mirror are _____.
inverted (upside down)
left-right reversed
upright
diminished in size
enlarged
real
virtual
Answer:
-left-right reversed
-upright
-virtual
I just did this in my lesson.
Microwave ovens emit microwave energy with a wavelength of 13.0 cm. what is the energy of exactly one photon of this microwave radiation?
The energy of exactly one photon of this microwave radiation is 1.53 × 10⁻²⁴Joule
Further explanationThe term of package of electromagnetic wave radiation energy was first introduced by Max Planck. He termed it with photons with the magnitude is:
[tex]\large {\boxed {E = h \times f}}[/tex]
E = Energi of A Photon ( Joule )
h = Planck's Constant ( 6.63 × 10⁻³⁴ Js )
f = Frequency of Eletromagnetic Wave ( Hz )
The photoelectric effect is an effect in which electrons are released from the metal surface when illuminated by electromagnetic waves with large enough of radiation energy.
[tex]\large {\boxed {E = \frac{1}{2}mv^2 + \Phi}}[/tex]
[tex]\large {\boxed {E = qV + \Phi}}[/tex]
E = Energi of A Photon ( Joule )
m = Mass of an Electron ( kg )
v = Electron Release Speed ( m/s )
Ф = Work Function of Metal ( Joule )
q = Charge of an Electron ( Coulomb )
V = Stopping Potential ( Volt )
Let us now tackle the problem!
Given:
λ = 13.0 cm = 13.0 × 10⁻² m
Unknown:
E = ?
Solution:
[tex]E = h f[/tex]
[tex]E = h \frac{c}{\lambda}[/tex]
[tex]E = 6.63 \times 10^{-34} \frac{3 \times 10^8}{13.0 \times 10^{-2}}[/tex]
[tex]\large {\boxed {E = 1.53 \times 10^{-24} ~ Joule } }[/tex]
Learn morePhotoelectric Effect : https://brainly.com/question/1408276Statements about the Photoelectric Effect : https://brainly.com/question/9260704Rutherford model and Photoelecric Effect : https://brainly.com/question/1458544Photoelectric Threshold Wavelength : https://brainly.com/question/10015690Answer detailsGrade: High School
Subject: Physics
Chapter: Quantum Physics
Keywords: Quantum , Photoelectric , Effect , Threshold , Frequency , Electronvolt
An ice skater starts a spin with her arms stretched out to the sides. she balances on the tip of one skate to turn without friction. she then pulls her arms in so that her moment of inertia decreases by a factor of two. in the process of her doing so, what happens to her kinetic energy?
I₁ = initial moment of inertia before pulling in the arms
I₂ = final moment of inertia after pulling in the arms = I₁ /2
w₁ = initial angular velocity before pulling in the arms
w₂ = final angular velocity after pulling in the arms
using conservation of angular momentum
I₁ w₁ = I₂ w₂
I₁ w₁ = (I₁/2 ) w₂
w₂ = 2 w₁
KE₁ = initial rotational kinetic energy before pulling in the arms = (0.5) I₁ w²₁
KE₂ = final rotational kinetic energy after pulling in the arms = (0.5) I₂ w²₂
Ratio of final rotational kinetic energy to initial rotational kinetic energy is given as
KE₂ /KE₁ = (0.5) I₂ w²₂/((0.5) I₁ w²₁ )
KE₂ /KE₁ = ((I₁/2 ) (2 w₁)²)/(I₁ w²₁)
KE₂ /KE₁ = 2
KE₂ = 2 KE₁
hence the kinetic energy becomes twice
a type of rock that forms when particles from other rocks or the remains of plants and animals are pressed and cemented together
Sedimentary rock is formed from the compaction and cementation of sediment originating from other rocks or organic material. This process results in various types of sedimentary rocks, like sandstone and shale.
The type of rock that forms when particles from other rocks or the remains of plants and animals are pressed and cemented together is known as sedimentary rock. These rocks are created through a multi-step process starting with the deposition of sediment that comes from the weathering and erosion of pre-existing rocks (clasts), or from the accumulation of plant and animal material. Over time, these deposited sediments may harden into rock through two main processes:
Compaction: where sediments are squeezed together under the weight of sediments above them.
Cementation: where minerals fill in the spaces between the loose sediment particles.
This process creates various types of sedimentary rocks, such as clastic rocks which are fragments compacted and cemented together, and organic sedimentary rocks which are formed from the lithification of organic material. Examples of sedimentary rocks include sandstone, formed from cemented sand; shale, formed from compressed mud and silt; and conglomerate, composed of cemented gravel and pebbles.
In this layer of Earth's atmosphere, hydrogen and helium are the prime gases and are only present at extremely low densities. What is this layer of the atmosphere called?
A) exosphere
B) ionosphere.
C) mesosphere
D) thermosphere
Kitty Genovese was stabbed to death while neighbors looked on. Nobody went out to help and only later did someone call the police for help. This event led psychologists to create a new term called _____.
a 920-g empty iron kettle is out on a hot stove. how much heat must the kettle absorb to raise its temperature 15.0 Celsius to 93.0 celsius the especific heat capacity iron is 470 j/kg * k
The iron kettle must absorb 33,768 joules of heat energy to raise its temperature from 15.0 Celsius to 93.0 Celsius.
Explanation:To calculate the amount of heat the iron kettle must absorb, we can use the formula:
q = mcΔT
where:
q is the heat absorbed (in joules)m is the mass of the iron kettle (in grams)c is the specific heat capacity (in J/g°C)ΔT is the change in temperature (in Celsius)Plugging in the given values:
q = (920g) x (0.470 J/g°C) x (93.0°C - 15.0°C)
q = (920g) x (0.470 J/g°C) x (78.0°C)
q = (920g) x (36.66 J/°C)
q = 33768 J
Therefore, the iron kettle must absorb 33,768 joules of heat energy to raise its temperature from 15.0 Celsius to 93.0 Celsius.
Given an electron beam whose electrons have kinetic energy of 5.00 kev , what is the minimum wavelength λmin of light radiated by such beam directed head-on into a lead wall?
To answer the problem we would be using this formula which is E = hc/L where E is the energy, h is Planck's constant, c is the speed of light and L is the wavelength
L = hc/E = 4.136×10⁻¹⁵ eV·s (2.998x10⁸ m/s)/10⁴ eV
= 1.240x10⁻¹⁰ m
= 1.240x10⁻¹ nm
What is the wavelength corresponding to the most intense light emitted by a giant star of surface temperature 4400 k?
Final answer:
The wavelength corresponding to the most intense light emitted by a giant star with a surface temperature of 4400 K is approximately 681.8 nm.
Explanation:
According to Wien's law, the wavelength at which the most intense light is emitted by a giant star can be determined using the formula:
wavelength = 3 x 10^6 / temperature
In this case, the surface temperature of the giant star is 4400 K. Plugging in this value into the formula, we get:
wavelength = 3 x 10^6 / 4400 = 681.8 nm
Therefore, the wavelength corresponding to the most intense light emitted by the giant star is approximately 681.8 nm.
PLEASE PLEADE HELP!?!?
The universe could be considered an isolated system because (2 points) Select one:
a. many people think that no energy or matter exists outside the universe.
b. energy and matter are created in the universe and flow freely into and out of the universe.
c. energy is created outside the universe and matter is created within the universe.
d. energy is created in the universe and matter is transferred out of the universe.
Answer: a. many people think that no energy or matter exists outside the universe.
Explanation: The universe isolated because everything is within it and nothing is on the outside. There is no exchange of energy or matter between the universe and its surroundings. Thus since it is isolated, there can be no exchange of energy with anything.
sound
· parallel
· mechanical
· not a vacuum
· needs a medium
· compressions and rarefaction
What type of wave is being described?
A) compaction
B) electromagnetic
C) longitudinal
D) transverse
It is a longitudinal wave. In a longitudinal wave the particles of the medium vibrate in a direction parallel to the direction of energy transport. Sound waves are mechanical waves as well as longitudinal waves that require a medium. They do not travel through a vacuum.
What is the electric potential energy of a charge that experiences a force of 3.6 x 10^-4N when it is 9.8 x 10^-5 from the source of the electric field
At what rate must electrons in a wire vibrate to emit microwaves with a wavelength of 1.00 mm
Answer:
f = 3×10¹¹ Hz
Explanation:
Relation ship between frequency and wavelength
"The wave speed (v) is defined as the distance traveled by a wave per unit time. If considered that the wave travels a distance of one wavelength in one period,
ν=λ/T
As we know that T = 1/f, hence we can express the above equation as,
V = f λ
The wave speed is equal to the product of its frequency and wavelength, and this implies the relationship between frequency and wavelength."
The relation between frequency and wavelength is
λ×f = c
c = speed of light = 3×10⁸ m/s
λ = 1.00 mm = 10⁻³ m
f=c/λ
f=(3×10⁸ m/s)/ 10⁻³ m
f = 3×10¹¹ Hz
The small currents in axons corresponding to nerve impulses produce measurable magnetic fields. a typical axon carries a peak current of 0.040 μa. part a what is the strength of the field at a distance of 1.2 mm
The strength of the magnetic field at a distance of 1.2 mm from a typical axon carrying a peak current of 0.040 μA is 0.667 nanotesla (nT).
To determine the strength of the magnetic field at a distance of 1.2 mm from a current-carrying axon, we can use the formula for the magnetic field around a long straight wire: B = (μ₀ * I) / (2π * r), where B is the magnetic field, μ₀ is the permeability of free space (4π × 10⁻⁷ T*m/A), I is the current, and r is the distance from the wire.
Calculating the Magnetic Field:
Convert the given current (0.040 μA) to amperes: 0.040 μA = 0.040 × 10⁻⁶ AUse the given distance (1.2 mm) in meters: 1.2 mm = 1.2 × 10⁻³ mSubstitute the values into the magnetic field formula: B = (4π × 10⁻⁷ T*m/A * 0.040 × 10⁻⁶ A) / (2π * 1.2 × 10⁻³ m)Simplify the expression to find the magnetic field: B = (1.6 × 10⁻¹² T*m)/ (2.4 × 10⁻³ m) = 0.667 × 10⁻⁹ T = 0.667 nTTherefore, the strength of the magnetic field at a distance of 1.2 mm from a typical axon carrying a peak current of 0.040 μA is 0.667 nanotesla (nT).
PLEASE HELP WILL MARK THE BRAINELIST!!!!!!
1.) The fight or flight response (2 points)
a. results from chronic stress
b. has little impact on the body
c. prepares an organism to respond to stress
d. impacts only mental processes
2.) Which of the following is a true statement about stress? (2 points)
a. Both distress and eustress are harmful
b. The fight or flight response only occurs in wild animals
c. Stress is a psychophysiological response
d. Stress hormones increase the functions of all body systems
3.) According to the American Psychological Association, what is the most significant source of stress for Americans? (2 points)
a. Health
b. Education
c. Work
d. Money
4.) Which of the following is a common source of stress for both teens and adults? (2 points)
a. Child-rearing
b. Relationships
c. Economy
d. Education
5.) How can stress be beneficial? (2 points)
a. Decreasing heart rate
b. Increasing digestion
c. Increasing immune response
d. Increasing energy
6.) Chronic stress can result in all of the following except (2 points)
a. heart disease
b. weight gain
c. depression
d. improved concentration
7.) People who experience chronic stress are more vulnerable to (2 points)
a. illness
b. economic trouble
c. therapy
d. genetic disorders
8.) Type A personality has been linked to (2 points)
a. higher rates of heart disease
b. lower levels of time urgency
c. lower levels of stress hormone
d. higher rates of job satisfaction
9.) Which of the following is characteristic of Type B personality? (2 points)
a. Tendency to multitask and rush
b. Mental and physical alertness
c. Low sense of time urgency
d. Intense drive to achieve
10.) What did Friedman and Rosenman conclude from their study? (2 points)
a. Type B personality increases vulnerability to time urgency, which decreases stress response.
b. Type A personality increases vulnerability to time urgency, which decreases stress response.
c. Type B personality increases a person's levels of stress, which in turn increases vulnerability to CHD.
d. Type A personality increases a person's levels of stress, which in turn increases vulnerability to CHD.
1 is c
2 is c
3 is d
4 is b
5 is d
6 is d
7 is a
8 is a
9 is c
10 is d
i hope my answers help you
Stress responses, including the fight or flight response, are psychophysiological reactions that can prepare an organism for stressful situations. Chronic stress can lead to negative health effects, including illness and increased vulnerability to heart disease, particularly in individuals with a Type A personality. These concepts can help to understand the effects of stress on health.
Explanation:The fight or flight response (c) prepares an organism to respond to stress. Stress (c) is a psychophysiological response. According to the American Psychological Association, the most significant source of stress for Americans is (d) Money. A common source of stress for both teens and adults is (b) Relationships. Stress can be beneficial by (d) Increasing energy. Chronic stress can result in all of the following except (d) improved concentration. People who experience chronic stress are more vulnerable to (a) illness. A Type A personality has been linked to (a) higher rates of heart disease. Characteristics of a Type B personality include (c) a low sense of time urgency. Friedman and Rosenman concluded from their study that (d) a Type A personality increases a person's levels of stress, which in turn increases vulnerability to CHD.
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Photons of what minimum frequency are required to remove electrons from gold? note: the work function for gold is 4.8 ev.
A flashlight operates on a 9.00 v battery and has a resistance of 45. At what rate does the flashlight use electric energy
What is the frequency of a pressure wave of wavelength 2.5 m that is traveling at 1400 m/s?
If an object starts at rest and moves 60 meters north along a straight line in 2 seconds, what is the average velocity?
Answer:
The average velocity, expressed as a vector, is v=30 m/s with direction north.
Explanation:
In this case, we will obtain a vector velocity, and the correct answer will be expressed as a vector. But as the movement happens only along a straight line (with direction to the north from the point of rest), we can do the math calculation as a one-dimensional problem. Then the final velocity will be a vector with the calculated magnitude, pointing to the north, as we already know.
The question is simple, as we were given the distance in meters that the object moved in a straight line, and the time in seconds that took the object to move that distance, we have the correct units and we can write the average velocity as
[tex]v=\frac{d}{t}[/tex]
where d is the distance, and t is the time. Therefore
[tex]v=\frac{60m}{2s}=30\frac{m}{s}[/tex]
which is the magnitude of the velocity we wanted to know, then we express it as vector saying its direction (north, for our system of reference).
where should the property "little voltage loss across long distances" be placed in a Venn Diagram?
A) direct current
B) alternating current
C) both alternating and direct current
D) neither alternating nor direct current
The answer is B i know this because i just did it on usatestprep
What is radioactive decay
Answer :
Radioactive decay : It the process in which an unstable atomic nucleus loses energy by emitting the radiations like, alpha particles, beta particles, or gamma rays.
Alpha particle : It is also known as alpha radiation or alpha ray that consists of 2 protons and 2 neutrons that are bound together into a particle that is identical to the helium nucleus. It is produced in the process of alpha decay.Beta particle : It is also known as beta radiation or beta ray. During the beta decay process, a high energy and speed electron or positron are emitted by the radioactive decay of atomic nucleus.Gamma particle : It is also a gamma radiation or gamma ray that is arising from the radioactive decay of atomic nuclei. It has shortest wavelength waves and imparts high photon energy can pass through most forms of matters because they have no mass.A charged particle is projected with its initial velocity parallel to a uniform magnetic field. what is the resulting path? 1. parabolic arc. 2. circular arc. 3. straight line parallel to the field. 4. straight line perpendicular to the field. 5. spiral.
If a charged particle is projected with its initial velocity parallel to a uniform magnetic field, then the resulting path would be a straight line parallel to the field, therefore the correct answer is option 3.
What is a magnetic field?A magnetic field could be understood as an area around a magnet, magnetic material, or an electric charge in which magnetic force is exerted .
As given in the problem if a charged particle is projected with its initial velocity parallel to a uniform magnetic field then we have to find out what would be the resulting path of the particle .
Thus , the right response is option 3, as the path of a charged particle projected with its starting velocity parallel to a uniform magnetic field would be a straight line parallel to the field .
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If the potential across two parallel plates, separated by 3 cm, is 12 volts, what is the electric field strength in volts per meter? E = _____ volts/m
Answer:
E = 400 V/m
Explanation:
It is given that, for a parallel plates :
Potential difference, V = 12 volts
Separation between the plates, d = 3 cm = 0.03 m
The relation between the electric field and the electric potential is given as :
[tex]E=\dfrac{V}{d}[/tex]
[tex]E=\dfrac{12\ V}{0.03\ m}[/tex]
E = 400 volts/m
So, the strength of the electric field is 400 V/m.
A ball is kicked with an initial velocity of 22 m/s in the horizontal direction and 13 m/s in the vertical direction. (assume the ball is kicked from the ground.) (a) at what speed (in m/s) does the ball hit the ground? m/s (b) for how long (in s) does the ball remain in the air? s (c) what maximum height (in m) is attained by the ball? m
The speed at which the ball hits the ground, the time it remains in the air, and the maximum height it attains can be calculated using the initial vertical and horizontal velocities and the acceleration due to gravity.
Explanation:Given the ball is launched with an initial horizontal velocity (Vx) of 22 m/s and a vertical velocity (Vy) of 13 m/s. The acceleration due to gravity (g) is -9.81 m/s2.
(a) Speed when the ball hits the ground:
Using the kinematic equation, we have Vy_final = Vy - g*t, where t is the time. The total final velocity as the ball hits the ground is given by V_final = sqrt(Vx2 + Vy_final2).
(b) Time the ball remains in the air:
The ball reaches its maximum height when Vy_final=0. So, 0=Vy-g*t => t=Vy/g. As the motion is symmetrical, the total time in air would be 2*t.
(c) Maximum height attained:
Using the formula for maximum height H = Vy2/2g.
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When a baseball player catches a baseball, the glove "gives" or moves backward. How does this movement affect the change in momentum of the baseball?
A The change in momentum increases because the impact time increases.
B The change in momentum stays the same because the ball still comes to a stop.
Answer:
The change in momentum increases because the impact time increases.
Explanation:
When a baseball player catches a baseball, the glove "gives" or moves backward. Momentum of a body is equal to the product of mass and velocity. Also, the change of momentum of an object when it is acted by a force is called impulse. It is represented by J. Mathematically, it can be written as :
[tex]J=F.\Delta t=m\Delta v[/tex]
F is applied force
[tex]\Delta t[/tex] is the time taken by an object to change its momentum
The momentum depends on the force and the time of impact. In this case, as the a baseball player catches a baseball, the gloves move in backward direction. By doing so, the ball comes to rest in larger time.
So, the change in momentum increases because the impact time increases.
Why does the amount of water that flows in a river change during the year?
A 4.0 ω resistor, an 8.0 ω resistor, and a 13.0 ω resistor are connected in parallel across a 24.0 v battery. what is the equivalent resistance of the circuit? answer in units of ω.