Complete the ray diagram for an object in front of a lens to show how to find the location and size of the image from the location and size of the object. F labels the focal points of the lens.
In this case draw all the rays needed to locate the object, then state whether the image is real or virtual, and upright or inverted.
Draw directly on the incomplete diagram provided.
Answer:

Answer:

The law of inertia relates to revolution of planets round the sun due to constant motion of the planets round the sun.

Explanation:

Law of inertia states that a body at rest or uniform motion will continue to be at rest or uniform motion unless it is acted upon by an external force.

The gravitational force keeps the planets revolving round the sun in a uniform motion, this will continue till infinity unless equal and opposite force acts on our planets.

Therefore, the law of inertia relates to revolution of planets round the sun due to constant motion of the planets round the sun.

Answer:

Zero or +2

Explanation:

The noble gases already have a avplete outermost shell. They are the least reactive elements of earth?

Their normal oxidation number is zero but some have been shown to be reactive.

Answer:

Explanation:

Since oxidation number is derived from the number of electron in the outermost shell of an element and further more this oxidation number is a function of how much electron is needed by an element to achieve a duplet ( He) or octet configuration ( complete outer most shell which is the attributes of group  18 elements or noble gases) and they don't readily react with any compound.. Since Xenon and argon are noble gases , they will have their outer most shell completely feel hence their oxidation number will be zero (0)

Answer: The stratosphere and the thermosphere are responsible for the majority of the solar radiation absorption.

Explanation:

Answer:The stratosphere and the thermosphere are responsible for the majority of the solar radiation absorption.

Answer:

ive answered this

Explanation:

please check your previose question

The palm of the hand has more touch receptors than the back, making it more sensitive to touch. This density of receptors allows the palm to better distinguish two closely spaced points. The difference in receptor density and receptive field sizes results in the increased tactile sensitivity of the palm.

In terms of touch receptor density, you would expect to have more touch receptors on the palm of your hand compared to the back of your hand. This is because areas of the skin with a high density of touch receptors, such as the palms, are more sensitive and can detect finer details. The palm of your hand has many more receptors with smaller receptive fields, which allows it to distinguish between two closely spaced points better than the back of your hand. Skin areas with small receptive fields are better able to distinguish two similarly-spaced points. The palm has a smaller threshold for discerning between two points than the back, a result of the differences in the size of receptive fields.

If you were to perform a two-point discrimination test, you would notice that the minimum distance at which you can perceive two points as separate is much smaller on the palm than on the back of the hand. This increased sensitivity is due to the higher density of touch receptors in the palm, which is essential for tasks that require precise touch, such as gripping objects and feeling textures.

Explanation:

The fluctuating sound heard when two objects vibrate with different frequencies is called beats. It is given that guitar string produces 3 beats/s when sounded with a 352 Hz tuning fork and 8 beats/s when sounded with a 357 Hz tuning fork.

It is assumed to find the vibrational frequency of the string.

For 3 beats/s, beat frequency can be :

352 - 3 or 352 + 3 = 349 Hz or 355 Hz

For 8 beats/s, beat frequency can be :

357 - 8 or 357 + 8 = 349 Hz or 365 Hz

It means that the vibrational frequency is 349 Hz.

Answer: physical

Explanation: it's still hair, it's just dry instead of wet now

Answer:

[tex]F_Q=\frac{Mg}{3}[/tex]

Explanation:

We are given that

Length of beam=L

Mass of object=M

We have to find the FQ , the  vertical force that pier exerts on the right end of the bridge .

Torque about P

[tex]F_Q(3L)-MgL=0[/tex]

[tex]F_Q(3L)=MgL[/tex]

[tex]F_Q=\frac{MgL}{3L}[/tex]

[tex]F_Q=\frac{Mg}{3}[/tex]

Hence, the force that exerted pier Q exerts on the right end  of the bridge is given by

[tex]F_Q=\frac{Mg}{3}[/tex]

Answer:

Question incomplete

This is the complete question

You have a collection of 1.0 kΩ resistors.

How can you connect four of them to produce an equivalent resistance of 0.25 kΩ?

Explanation:

Given that,

We have collection of resistor

R = 1.0 kΩ.

And we want to design an equivalent resistance of

R = 0.25kΩ

We know that,

Series connection of add up resistance and this increases the value of resistance, I.e

Req = R1 + R2 + R3 +.....

While

Parallel resistance add up the reciprocal of resistance and this reduces resistance

So, 1/Req = 1/R1 + 1/R2 + 1/R3 +......

Now, we want to design 0.25kΩ

Connect four of the resistor in parallel will give a equivalent resistance of 0.25 kΩ

1/Req = 1/R1 + 1/R2 + 1/R3 + 1/R4

R1 = R2 = R3 = R4 = 1.0 kΩ

1/Req = 1/1 + 1/1 + 1/1 + 1/1

1/Req = 1+1+1+1

1/Req = 4

Taking reciprocal of both sides..

Req = ¼ kΩ

This is the required equivalent resistance

So, connect the four of the resistor in parallel will give the required 0.25 kΩ resistance

Answer:

The answer to your question is height = 9.20 m

Explanation:

Data

Work = 587 kJ

mass of the body = 6500 kg

height = ?

Mechanic work is defined as the force applied to a body times its mass.

Process

1.- Calculate the weight of the body

weight = mass x gravity (9.81)

weight = 6500 x 9.81

            = 63765 N

2.- Calculate the height

height = work / weight

-Substitution

height = 587 000 / 63765

-Result

height = 9.20 m

The final rotational kinetic energy of the rotating disk is 9.95 J

Explanation:

Given data,

mass 0.7 kg radius 10 cm rotates at the speed of 15 rev/sec

We have the formula,

Kf= 1/2 I ω f²

I=1/2 Mr²2

ωf= (0.8) ωo

substitute in the formula we get

Kf= 1/2 (1/2 MR²2) (0.8) ² ( ωo)²

=(0.16) M R²2 ωo²2

=(0.16)(0.7)(0.10)²(15[2π)] ²

Kf=9.95 J

The final rotational kinetic energy of the rotating disk is 9.95 J

Answer:

Explanation:

charges passed = current x time

= 10 x 3 x 60

= 1800 C

mole of charge = 1800 / 96500

= .01865  moles

Au⁺³ contains 3 positive charges

3 mole of charge will deposit 1 mole of Au

.01865  moles  will deposit .01865 / 3 mole

= 6.2167 x 10⁻³ moles .

Answer:

opposite the sun. between the Earth and the sun. rising perpendicular to the sun.

Explanation:

Answer:

Explanation:

The curved mirror shown is a converging lens.

To find the location and size of the image formed by a converging lens, you must draw two rays: one ray is from the upper tip of the object (the pen in your figure) that is in front of the mirror, parallel to the horizontal axis until the lens (Ray 1 in your figure) which then bends through the focal point (F in your figure). That is the ray that you must complete in your figure.

The attached figure shows this ray in blue.

The other ray would be from the upper tip of the pen straight through the center of the lens (this is not included in the figure, by instructions of the question).

For finding the location and size of the image we have to prepare it for that please look below.

It is to be shown like a converging lens. For determining the location and image size i.e. created by the converging lens here two rays should be drawn i.e. one ray from the upper tip of the project that should be front of the mirror also parallel to the horizontal axis that bends via the focal point. It represents that ray that should finished the given figure.

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Final answer:

The incorrect statement about polarized materials is that two polarized filters with their axes parallel will block all light, while in reality, they pass all light that is polarized along the axis.

Explanation:

Answer: 12.5 grams will remain.

Explanation:

The half life time means that if we start with a quantity A of a given subtance/material, after the half time we will have half that quantity, or A/2.

We know that the half life of Sciencium-380 is 3 days.

So if we have 100 grams, after 3 days we will have 100/2 = 50 grams.

After other 3 days we will have 50/2 = 25 grams

After other 3 days we will have 25/2 = 12.5 grams.

So if we start with 100 grams, after 9 days we will have 12.5 grams.

Answer:

12.5 grams

Explanation:

Solution:-

- By definition, the half-life is the amount of time t that a substance of mass M   to decay to half its its initial mass.

- We are given the mass of the Sciencium-380, M = 100 g

- The half-life for the radioactive isotope is, h = 3 days

- The amount of mass left after t = 9 days.

- We will first estimate the number of half-lives that have passed in te duration of t = 9 years.

- The number of half lives are:

                                    n = t / h

                                    n = 9 / 3

                                    n = 3

- For every half life the mass is halved or mathematically the mass ( m ) of a substance remaining after " n " number of half lives can be expressed as:

                                     m = M*0.5^n

- Plug in the given values and evaluate the mass ( m ) of the substance after n = 3 half lives.

                                     m = 100*0.5^3

                                     m = 12.5 grams.

Answer: We are left with 12.5 grams of Sciencium after 3 half lives have passed.

Answer:

[tex]v_{1f} = 90.12m/s[/tex]

Explanation:

As we know that Probe along with rocket system is an isolated system

So here net force on this system must be zero

and we can use momentum conservation for this system

So we will have

[tex](m_1 + m_2)v_{i} = m_1v_{1f} + m_2v_{2f}[/tex]

here we know that

[tex]7310 \times 88.3 = (7310- 54)v_{1f} + 54(v_{1f} - 246)[/tex]

[tex]645473 = 7310\times v_{1f} - 13284\\658757 = 7310 \times v_{1f}[/tex]

so we have,

[tex]v_{1f} = 90.12m/s[/tex]

Answer:

Final velocity of Probe; V_f = 656.314 m/s

Explanation:

We are given;

Mass of space probe; m_i = 7310 kg

Initial velocity of probe ; v_i = 88.3 m/s

Mass of exhaust fuel; m = 54 kg

V_rel = 246 m/s

Mass of fuel; m_f = m_i - m = 7310 kg - 54kg = 7256 kg

From Rocket equation;

V_f - V_i = V_rel[In(m_i/m_f)]

Where V_f is final velocity of probe.

Thus, plugging in the relevant values to get ;

V_f - 88.3 = 246[In(7310/7256)]

V_f - 88.3 = 246 x 2.309

V_f - 88.3 = 568.014

Thus, V_f = 568.014 + 88.3 = 656.314 m/s

Answer:

Frequency of gamma rays is more than microwave.                

Explanation:

The number of vibrations per unit time is called frequency of a wave. The SI unit of frequency is Hertz. It is equal to [tex]s^{-1}[/tex].

The frequency of gamma rays is of the order of [tex]10^{20}\ Hz[/tex]. The frequency of microwave is of the order of [tex]10^8\ Hz[/tex].

It is clear that gamma rays have more frequency that of the microwave.

Answer:

The native species will be endangered or even go into extinction.

A drastic change in the food web

Explanation:

The zebra mussel or Dreissena

polymorpha is a small bivalve that originated from the Caspian Sea region, In mid 1980s the Zebra Mussels moved to North America in the ballast water of a ship.

They took over the

Great Lakes and the waters draining them. It is speculated that the Zebra mussels will eventually

move to most of the waters in North America with the exception of waters that are too warm or too saline for them to survive.

They were first discovered in the Hudson at very low densities in 1991, spreading rapidly that by 1992 they can be found throughout the river, with biomass that was greater than the combined biomass of all

other consumers viz; fish, zooplankton and bacteria, in the river.

Their densities can reach over

100,000 individuals per square meter. Because they are so many, they are able to filter all of the

water in the freshwater portion of the Hudson River every 2-4 days.

Whereas the native mussels could filter the water only every 2-3 months.

Zebra mussels are suspension feeders, eating

phytoplankton, small zooplankton, large bacteria, and organic detritus by filtering the water and straining out the edible material.

Now, because they filter small

organisms and organic particles out of the water at very high rates. (Very efficient filter-feeders)

Phytoplankton and zooplankton which form the base of the aquatic food web, as many animals depend on them for survival, this balance is tilted.

This has brought great changes and effects on the Hudson Ecosystem. The food web changes that the mussel has caused compare in magnitude to disturbances in other aquatic ecosystems caused by toxins, nutrient pollution, or acid rain. and have been found. These mussels were most likely

brought to those areas by careless human activity.

Furthermore, most of the species on the Hudson river will be endangered and some must have gone into extinction and this is due to the speed with which the Zebra mussels feed on them.

Complete question:

If a system absorbs 300.5J of heat and performs 1.50kJ of work on the surroundings, what is the change in internal energy of the system ΔE?

Answer:

Change in internal energy of the system is 1800.5 J

Explanation:

Given:

heat transferred to the system, Q = 300.5J

work done on the surroundings, W = 1.50kJ

Change in internal energy of the system ΔE, can be calculated by applying thermodynamic equation of change in internal energy, work done and heat transferred.

ΔE = Q  + W

Where;

ΔE is change in internal energy

Q is heat transfer

W is work done

ΔE = 300.5 J  +  1500 J

ΔE = 1800.5 J

Therefore, change in internal energy of the system is 1800.5 J

Answer:

The intern energy of the system is -1199.5 J

Explanation:

Given:

System absorbs 300.5 J of heat

Performs 1.5 kJ = 1500 J of work on the surroundings

Question: What is the ΔE?

When a system absorbs heat, it will have a positive sign, therefore +300.5 J

When the system performs work on the surroundings, its sign will be negative, therefore, -1500 J

According the first law of thermodinamic:

ΔE = q + W = 300.5 - 1500 = -1199.5 J

Answer:

36.25 N

Explanation:

The magnitude of the electrostatic force between two charges is given by Coulomb's law:

[tex]F=k\frac{q_1 q_2}{r^2}[/tex]

where:

[tex]k=9\cdot 10^9 Nm^{-2}C^{-2}[/tex] is the Coulomb's constant

[tex]q_1, q_2[/tex] are the magnitude of the two charges

r is the separation between the two charges

Moreover:

- The force is repulsive if the two  charges have same sign

- The force is attractive if the two charges have opposite sign

In this problem, we have 3 charges:

[tex]q_1=-5\mu C = -5\cdot 10^{-6}C[/tex] is the charge located at [tex]x=+10 cm = +0.10 m[/tex]

[tex]q_2=+6\mu C=+6\cdot 10^{-6}C[/tex] is the charge located at [tex]x=-8 cm =-0.08 m[/tex]

[tex]q_3=+2\mu C=+2\cdot 10^{-6}C[/tex] is the charge located at [tex]x=-2 cm=-0.02 m[/tex]

The force between charge 1 and charge 3 is:

[tex]F_{13}=\frac{kq_1 q_3}{(x_1-x_3)^2}=\frac{(9\cdot 10^9)(5\cdot 10^{-6})(2\cdot 10^{-6})}{(0.10-(-0.02))^2}=6.25 N[/tex]

And since the two charges have opposite sign, the force is attractive, so the force on charge 3 is to the right (towards charge 1).

The force between charge 2 and charge 3 is:

[tex]F_{23}=\frac{kq_2 q_3}{(x_2-x_3)^2}=\frac{(9\cdot 10^9)(6\cdot 10^{-6})(2\cdot 10^{-6})}{(-0.08-(-0.02))^2}=30.0 N[/tex]

And since the two charges have same sign, the force is repulsive, so the force on charge 3 is to the right (away from charge 2).

So the two forces on charge 3 have same direction (to the right), so the net force is the sum of the two forces:

[tex]F=F_{13}+F_{23}=6.25+30.0=36.25 N[/tex]

To solve this, use Coulomb's Law to calculate the separate forces each charge exerts on the -2 µC charge and then add these up using the principle of superposition to get total force.

This question involves the principle of superposition and Coulomb's Law in Physics. According to Coulomb's Law, the force between two charged particles is directly proportional to the product of their charges and inversely proportional to the square of the distance between them. In essence, it can be expressed as F = k|q1*q2|/r², where k is the Coulomb constant, q1 and q2 are the charges, and r is the distance between them.

You need to calculate the forces that the -2 µC charge experiences due to the -5 µC and the 6 µC charges separately, and then superpose (or add up) these forces to get the total force on the -2 µC charge.

The force between the -5 µC charge and the 2 µC charge at position -2 cm, F1 = k|-5*2|/12² = k*10/144

The force between the 6 µC charge and the 2 µC charge, F2 = k*6*2/6² = k*12/36

Add up these forces to get the total force as follows: F = F1 + F2

Using the known value for k (the Coulomb constant) F = (8.9875 × 10^9 N·m²/C²) ( (10/144) + (12/36) ) N

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Answer:

water, air, vegetation, and light. also a good temperature thats not too hot or too cold

Explanation:

it would need oxygen, trees, places for animals to build habitats, and water. The temperature also cant be too high.

Answer:

The speed of the particle whose kinetic energy is equal to its rest energy is 4.242*10⁸m/s.

Explanation:

The rest energy is defined as the energy equal to the mass of the particle at rest in the inertial frame of reference equal to the rest mass time square of speed of light

  E₀ = mc²

The kinetic energy is defined as the energy possessed by the particle due to its motion.

K.E =0.5mv².

where, m is the mass of the particle

            c is the speed of light,

             v is the velocity of the particle

It is given that Kinetic energy is equal to rest energy ie K.E = E₀

0.5mv² = mc²

  v² = 2c²

  v =√2c

    = 1.414*3*10⁸  

 v =4.242 *10⁸ m/s

The speed of the particle whose kinetic energy is equal to its rest energy is 4.242*10⁸m/s.

The speed of a particle whose kinetic energy equals its rest energy would be a significant fraction of the speed of light, approximately 0.914c or 91.4% of the speed of light for an electron with kinetic energy 150% of its rest mass energy.

The question asks about the relationship between kinetic energy and speed for a particle when the kinetic energy is equal to the particle's rest energy. Using the principles of relativity, we know that a particle's total energy is the sum of its rest mass energy and its kinetic energy. According to Einstein's theory of relativity, the kinetic energy (K) of a particle approaches infinity as its speed (v) approaches the speed of light (c). Therefore, for a particle to have its kinetic energy equal to its rest mass energy (E0), it must be traveling at a significant fraction of the speed of light.

Specifically, in the case of an electron with a rest mass energy of 0.511 MeV, if its kinetic energy is 150% of this value, calculations would show that the electron is traveling at a velocity approximately 0.914c, which is around 91.4% of the speed of light. This result is consistent with relativistic effects, which become significant as particles move at speeds approaching the ultimate speed limit, c, as stated by the theory of relativity.

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Answer:

P(A∪B)=0.8

Explanation:

Given that,

A and B are mutually exclusive events such that,

P(A)=0.5 and P(B)=0.3

We need to find P(A or B). It means we need to find P(A∪B). If two events are mutually exclusive, P(A∩B)=0. So,

P(A∪B)=P(A)+P(B)-P(A∩B)

Putting P(A) and P(B), we get :

P(A∪B)=0.5+0.3-0

P(A∪B)=0.8

So, the value of P(A or B) is 0.8

Answer:

As a result, sound waves travel faster in solids than in liquids, and faster in liquids than in gasses. While the density of a medium also affects the speed of sound, the elastic properties have a greater influence on the wave speed. The density of a medium is the second factor that affects the speed of sound. ( sorry its a bit long :b)

Explanation:

Answer:

Constant acceleration, velocity varies linearly, position varies quadratically.

Explanation:

Given that acceleration is constant, the vertical velocity varies linearly and vertical position varias quadratically by applying the physical concepts of position, velocity and acceleration and the mathematical concepts of differentiation and integration. Graphics are presented below as attachments.

Answer:

Im pretty sure its b

Answer:

[tex]5.0\cdot 10^{-6}C[/tex]

Explanation:

The magnitude of the electrostatic force between two charged objects is given by Coulomb's law:

[tex]F=k\frac{q_1 q_2}{r^2}[/tex]

where:

[tex]k=8.99\cdot 10^9 Nm^{-2}C^{-2}[/tex] is the Coulomb's constant

[tex]q_1, q_2[/tex] are the two charges  on the two objects

r is the separation between the two charges

The force is:

- Repulsive if the two charges have same sign

- Attractive if the two charges have opposite sign

In this problem:

F = 2.5 N is the force between the two balloons

r = 0.30 m is their separation

[tex]q_1=q_2=q[/tex] is the charge on each balloon (they have the same charge)

So, re-arranging the equation, we can find the value of q:

[tex]F=\frac{kq^2}{r^2}\\q=\sqrt{\frac{Fr^2}{k}}=\sqrt{\frac{(2.5)(0.30)^2}{8.99\cdot 10^9}}=5.0\cdot 10^{-6}C[/tex]

We are also told that the force between them is repulsive: this means that the charges on the two balloons have  same sign (so, either they are both positive, or both negative).

Using Coulomb's Law, we derive the formula to calculate the charge on each balloon to be q = sqrt(F * r^2 / k). By substituting the provided force and distance values into the formula, we can find the magnitude of charge on the spherical balloons.

The question involves calculating the charge on each of two spherical balloons which repel each other with a given force, using Coulomb's Law. Coulomb's Law states that the magnitude of the electrostatic force of interaction between two point charges is directly proportional to the scalar multiplication of the magnitudes of charges and inversely proportional to the square of the distance between the two charges.

According to Coulomb's Law, F = k * (|q1 * q2|) / r^2, where F is the force between charges, k is Coulomb's constant (8.9875 x 10^9 N·m^2/C^2), q1 and q2 are the amounts of charge on the balloons which are equal in this case, and r is the distance between the centers of the two charges.

To find the amount of charge on each balloon, we rearrange the formula to solve for q: q = sqrt(F * r^2 / k). We are given that the repelling force F is 2.5 N and the distance r is 0.30 m. Plugging in these values and the value for k, we can calculate the amount of charge on each balloon.

Answer:

(a) 2.42 km

(b) 119.74°

Explanation:

(a)

The shortest distance from starting to end point is the hypotenuse

[tex]C=\sqrt{a^{2}+b^{2}}[/tex]

Where a is is base and b is height. Substituting 1.2 km for a and 2.1km for b then

[tex]C=\sqrt{1.2^{2}+2.1^{2}}=2.41867732448956 km\approx 2.42 km[/tex]

(b)

The angle is given by the [tex]\theta[/tex] as indicated in the sketch

[tex]\theta=\frac {2.1}{1.2}=60.2551187030578\approx 60.26^{\circ}[/tex]

Towards East it will be 180-60.26=119.74°

Answer:

What would happen if the voltage impressed across a circuit is held constant while the resistance doubles.

The answer is:

A change will occur in the current which is, "The new current will be half the initial value."

Explanation:

Voltage, also called electromotive force,  is the measure of specific potential energy between two locations in an electrical field.

V= IR

Where, V= Voltage

             I= Current

             R= Resistance

The greater the voltage in a circuit, the greater its ability to push more electrons and do work.

Voltage is measured in volts (V). Voltage is the difference in charge between two points, and can also be considered as the pressure that forces the charged electrons to flow in an electrical circuit.

Current is the rate at which charge is flowing. An electric current flows when electrons move through a conductor, such as a metal wire.

Resistance is a material's tendency to resist the flow of charge (current).  Resistance is measured in ohms, and can be further explained as a measure of the opposition to current flow in an electrical circuit.  Resistance is good because it protects humans from the harmful energy of electricity.  Resistance, R in ohms (Ω) is equal to the voltage V in volts (V) divided by the current I in amps (A).

Current is directly proportional to the voltage and inversely proportional to the resistance.

If voltage is increased, the current will also increase. The higher the resistance, the lower the current flow. The lower the resistance, the higher the current flow.

Doubling the voltage will cause the current to be doubled. Also, doubling the resistance will cause the current to be one-half the original value.