A student claims that gravitational fields exist between objects that are not in contact with each other. She creates a diagram of two figures. The width of the arrows in Figure A and Figure B represent the strength of the gravitational attraction between two objects.


The student claims the gravitational force is greater between the objects in Figure A. Which argument best supports her claim?

A. The masses of the objects in Figure A are less than the masses of the objects in Figure B.

B. The distance between the objects in Figure A is shorter than the distance between the objects in Figure B.

C. The surface area of the larger object in Figure A is greater than the surface area of the larger object in Figure B.

D. The diameters of the objects in Figure A are greater than the diameters of the objects in Figure B.​

Answer:

[tex] Power = \frac {mgh}{time} [/tex]

Explanation:

2. Power can be defined as the energy required to do work per unit time.

Mathematically, it is given by the formula;

[tex] Power = \frac {Energy}{time} [/tex]

3. Potential energy can be defined as an energy possessed by an object or body due to its position.

Mathematically, potential energy is given by the formula;

[tex] P.E = mgh[/tex]

Where,

P.E represents potential energy measured in Joules.

m represents the mass of an object.

g represents acceleration due to gravity measured in meters per seconds square.

h represents the height measured in meters.

4. Substituting the equation in 3 into equation in 2 above, we have;

[tex] Power = \frac {mgh}{time} [/tex]

Answer:

R = V ÷ I = 1.5V ÷ 0.01A = 150Ω

Explanation:

150 is the answer:)

Answer:

The unit of speed is m/s.

Answer:

so if it's 20 you should put 20 times 10 15 * 30 and 1.3 * 5 mg and if you put that milligrams in there it'll solve the destination I saw the white way you going so yeah just be careful at least you want to make the milligrams even a multimacy with the y i and replace it with the 14a

Answer:

Convection is what keeps the hurricane going in till the storm hits land.

Explanation:

Convection is the warm, moist current that rises above sea level and as it cools into water vapor it releases energy which a hurricane runs on. Once the hurricane hits land it continues to lose energy to keep it going because there's no convection from the sea currents rising above sea level to release energy.

Hope this helps.

Answer:

a word opposite in meaning to another ( bad and good ).

Explanation:

a word which has opposite in meaning to another word

Let's say the force of gravity betwen you and the Earth (your "weight") is 100 pounds.

Then the force of gravity between you and a 10-pound bowling ball (sitting on the table 3-ft away from you) is about 0.000 000 049 of an ounce !

It's there, but it's too small for you to feel.

And it's not strong enough for the pencil or the bowling ball to jump up off the table, fly through the air, and stick to you.

Saturn is a planet in solar system. It's ring is made out of small covered ice particle. It has over 30 moons.

Answer:

B. 6 cm

Explanation:

First, we calculate the spring constant of a single spring:

[tex]k = \frac{F}{\Delta x}\\[/tex]

where,

k = spring constant of single spring = ?

F = Force Applied = 10 N

Δx = extension = 4 cm = 0.04 m

Therefore,

[tex]k = \frac{10\ N}{0.04\ m}\\k = 250\ N/m\\[/tex]

Now, the equivalent resistance of two springs connected in parallel, as shown in the diagram, will be:

[tex]k_{eq} = k + k\\k_{eq} = 2k = 2(250\ N/m)\\k_{eq} = 500\ N/m\\[/tex]

For a load of 30 N, applying Hooke's Law:

[tex]\Delta x = \frac{F}{k_{eq}}\\\\\Delta x = \frac{30\ N}{500\ N/m}\\\\\Delta x = 0.06\ m = 6\ cm\\[/tex]

Hence, the correct option is:

B. 6 cm

Answer:

Potential Energy to Kenetic Energy

Explanation:

When holding a ball in the air, the ball has potential energy. Once you drop the ball, the ball gains Kenetic Energy

Answer:

0.125

Explanation:

acellus

Answer:

[tex]p = f \div a[/tex]

[tex]p = \frac{185.6}{ {3}^{2} } = \frac{185.6}{9} = 20.6pa[/tex]

Answer:

The most important number's formal name is "equilibrium climate sensitivity," and it's meant to represent the new equilibrium in surface temperatures after a change in the amount of the Sun's energy trapped here on Earth rather than radiated back to space.

Explanation:

please give me brain list and follow

The average global temperature is the most important value when talking about climate change because the Earth's temperature is increasing day by day due to the trapping of the Sun's light energy.

The temperature is the degree of hotness or coldness of the object.

The equilibrium climate sensitivity is the equilibrium in Earth's surface temperature. After the Sun's trapped energy is reduced, the climate changes accordingly.

Thus, the average global temperature is the most important value when talking about climate change because the Earth's temperature is increasing day by day due to the trapping of the Sun's light energy.

Learn more about temperature.

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Answer:

C.cathode, cathode

Explanation:

In electrolysis, a device called ELECTRODE, which electric current passes through is used. However, electrodes can either be anode or cathode depending on the charge. Anode is a positive electrode that attracts negative ions while cathode is a negative electrode that attracts positive ions.

According to this question, Copper (Cu) and hydrogen (H) which are both positive ions i.e. Cu2+ and H+ will move towards and form at the CATHODE. Hence, the answer is cathode, cathode for the respective element.

Answer:

Pressure = 24000 N/m²

Explanation:

Given the following data;

Force = 120N

Area = 0.5cm² to meters = 0.5/100 = 0.005 m²

To find the pressure;

Pressure= force/area

Pressure= 120/0.005

Pressure = 24000 N/m²

Therefore, the pressure on the archer's fingers is 24000 Newton per meters square.

The pressure on the archer's finger will be  [tex]P=240 \ \frac{N}{cm^2}[/tex]

Pressure is defined as the normal force applied to the particular area. The formula is given as

[tex]P= \dfrac{F}{A}[/tex]

Here

F= Force applied

A= Area at which the force is applied

Now it is given that

F= 120 N

A= 0.5 [tex]cm^2[/tex]

Now by putting the values in the formula we get

[tex]P=\dfrac{120}{0.5} =240\ \frac{N}{cm^2}[/tex]

Thus the pressure on the archer's finger will be  [tex]P=240 \ \frac{N}{cm^2}[/tex]

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One reason that electromagnetic waves are used in long-distance communication is, that they do not lose energy over long distances. So Option C   is correct

Electromagnetic waves are a type of wave that consists of oscillating electric and magnetic fields. They are propagated through space or through a material medium, and they have the ability to travel through a vacuum, which is the absence of matter. Electromagnetic waves have a wide range of frequencies, which determines the type of electromagnetic wave. The most familiar types of electromagnetic waves include radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays.

One of the property of the electromagnetic waves is that they do not lose energy over long distances.

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Answer:

A warm current

Explanation:

Answer:

A warm current is moving away from the equator towards the poles. The water in a warm current is warmer than the surrounding water.

Answer:

D

Explanation:

speed = frequency x wavelength

speed of light in vacuum is 3.0 x 10^8

wavelength = 5.32 x10 ^-7

3.0 x 10 ^ 8 = 5.32 x 10^-7 x frequency

frequency = 5.63909 x 10^14

round it off = 5.64 x 10^14 Hz

thus the answer is D

hope this helps please mark it

Answer:

1. answer - it is conserved in a system

2. answe- impulse is equal to the change in momentum

Answer:

Organic matter

Explanation:

As organic matter continue to build up in a pond, vegetation will begin to appear in the pond. The first set of vegetation to appear are the floating vegetation. Subsequently, submersed plants begin to grow also.

With time, organic sediments continue to fill the pond and its depth is gradually decreased. A swamp or bog is now formed.

This trend of succession continues until the pond eventually turns into land.

Answer:

Hi I'm happy to meet you and the answer for your question is true. If you need me to state the law ask me

Answer:

400 N

Explanation:

From the question,

F = kmm'/r²........................ Equation 1

Where F = gravitation force, m and m' = mass 1 and mass 2 respectively, r = distance between the masses.

Given; F = 800 N

Substitute these values into equation 1

800 = kmm'/r².............. Equation 2

If the distance is doubled (2r), and one of the mass is doubled (2m), The new force is

F' = k(2m)(m')/(2r)²

F' = 2kmm'/4r²

F' = kmm'/2r²................. Equation 3

Comparing equation 2 and equation 3

F' = F/2............................ Equation 4

Substitute the value of F into equation 4

F' = 800/2

F' = 400 N

Answer:

Light propagating in a plane that makes a 0 degree angle with the polarizer will pass through and all other planes will only pass the component of the vector that is in line with the polarizer. What the image suggests, and other images like the second one, is that the light is now all propagating parallel to a single plane

Explanation:

hope this helps

Answer:

true

Explanation:

a polarizer allows only light of a specific wavelength to pass through

Answer:

before this type of attack, high acceleration is the most important thing.

Explanation:

As the zebra is ambushed by the crocodile the most important thing is a quick reaction, in this attack the most likely is that the crocodile is in the water so it cannot run after the zebra.

Consequently, before this type of attack, high acceleration is the most important thing.

Answer:

a. 4.99 × 10⁻⁴ N b. 1.46 × 10⁻³ N c. 4.83 nC

Explanation:

(a) Find the magnitude of the electric force acting on each ball.

The tension in the string, T is resolved into horizontal and vertical components Tsin20° and Tcos20° respectively, since the string makes an angle of 20° with the vertical.

Let F = electric force and W = mg be the weight of the ball where m = mass of ball = 0.14 g = 0.14 × 10⁻³ kg and g = acceleration due to gravity = 9.8 m/s²

The electric force acts in the opposite direction to the horizontal component of the tension in each string. Since the masses are in equilibrium,

Tsin20° = F (1)

Also, the weight of the ball acts downwards, opposite to the direction of the vertical component of the tension in the string. Since the masses are in equilibrium,

Tcos20° = W = mg

Tcos20° = mg (2)

Dividing (1) by (2), we have

Tsin20°/Tcos20° = F/mg

tan20° = F/mg

F = mgtan20°

So, F = 0.14 × 10⁻³ kg × 9.8 m/s²× tan20°

F = 0.4994 × 10⁻³ N

F = 4.994 × 10⁻⁴ N

F ≅ 4.99 × 10⁻⁴ N

(b) Find the tension in each of the threads.

Since  Tsin20° = F

T = F/sin20°

=  4.99 × 10⁻⁴ N/sin20°

= 4.99 × 10⁻⁴ N/0.3420

= 14.59 × 10⁻⁴ N

= 1.459 × 10⁻³ N

≅ 1.46 × 10⁻³ N

(c) Find the magnitude of the charge on the balls.

From Coulomb's law, the electric force between the masses of charge q and separated by a distance r = 2.05 cm = 2.05 × 10⁻² m

F = kq²/r² where k = 9.0 × 10⁹ Nm²/C²

q² = Fr²/k

q = √(Fr²/k)

q = [√(F/k)]r

Thus,  

q = [√(F/k)]r

q = [√( 4.99 × 10⁻⁴ N/9.0 × 10⁹ Nm²/C²)]2.05 × 10⁻² m

q = [√(0.5544 × 10⁻¹³ C²/m²)]2.05 × 10⁻² m

q = [√(5.544 × 10⁻¹⁴ C²/m²)]2.05 × 10⁻² m

q = [2.355 × 10⁻⁷ C/m]2.05 × 10⁻² m

q = 4.83 × 10⁻⁹ C

q = 4.83 nC

Answer:

Explanation:

one and three seem right soo  answer C