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snow_tiger [21]
3 years ago
10

Two particles with the same charges are held a fixed distance apart. The charges are equal in magnitude and they exert a force o

n each other. Half of one of the charges is transferred to the other charge and the distance is unchanged. What happens to the force exerted by one charge on the other charge? The force is half as large The force is uncharged The force is twice as large The force is one fourth as large The force is three fourths as large
Physics
1 answer:
Hoochie [10]3 years ago
7 0

Answer:

The force is three fourth as large of initial force

Explanation:

Let assume that that charge on each particle be q and the distance which is fixed between them be r.

Then By using Coulombs law the forceF_1between them  is

F_1=\dfrac{q^2}{4\pi \epsilon_0 r^2}

When half of the charge is transferred from on to other particle then the charge on the particles are 0.5 q and 1.5 q

Let the force between them be F_2

F_2=\dfrac{0.5 q\times 1.5 q}{4\pi \epsilon_0 r^2}

F_2=\dfrac{3q^2}{4\pi \epsilon_0 4r^2}

Then it can can be seen from taking taking ratio that \dfrac{F_2}{F_1}=\dfrac{3}{4}

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Jupiter and Saturn each have the same three basic cloud layers, but the spacing of the layers differs on the two planets. Why is
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Answer:

b. Jupiter’s greater gravity has compressed the layers, so they are closer together there.

Explanation:

The value for Jupiter mass is 1.8981×10²⁷kg, while the mass of Saturn is 5.6832×10²⁶kg, so the different layers of clouds in Jupiter will be submitted to a greater gravitational pull because it has a bigger mass, as is established in the law of universal gravitation:

F = G\frac{m1m2}{r^{2}}   (1)

Where m1 and m2 are the masses of two objects, G is the gravitational constant and r is the distance between the two objects.

As it can be seen in equation 1, the gravitational force is directly proportional to the product of the masses of the objects, so if the mass increase the gravitational force will do it too.  

For the case of Saturn, it has a lower mass so its layers of clouds will suffer a weaker gravitational pull. That leads to the three clouds being more spacing that the ones of Jupiter.    

3 0
3 years ago
A student (m = 68 kg) falls freely from rest and strikes the ground. During the collision with the ground, he comes to rest in a
Gnesinka [82]

Answer:

5.7141 m

Explanation:

Here the potential and kinetic energy will balance each other

mgh=\frac{1}{2}mv^2\\\Rightarrow v=\sqrt{2gh}

This is the initial velocity of the system and the final velocity is 0

t = Time taken = 0.04 seconds

F = Force = 18000 N

a = Acceleration

g = Acceleration due to gravity = 9.81 m/s²

Equation of motion

v=u+at\\\Rightarrow a=\frac{v-u}{t}

From Newton's second law

F=ma\\\Rightarrow F=m\frac{v-u}{t}\\\Rightarrow 18000=68\frac{0-\sqrt{2gh}}{0.04}\\\Rightarrow \frac{18000}{68}\times 0.04=-\sqrt{2\times 9.81\times h}\\\Rightarrow 10.58823=-\sqrt{2\times 9.81\times h}

Squarring both sides

112.11061=2\times 9.81\times h\\\Rightarrow h=\frac{112.11061}{2\times 9.81}\\\Rightarrow h=5.7141\ m

The height from which the student fell is 5.7141 m

5 0
3 years ago
Without heat from the Sun, the water cycle would A) reverse. B) not work. C) slow down. D) not be affected.
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B) not work ,because the water would freeze
4 0
4 years ago
Read 2 more answers
What TWO things affect the gravitational force acting on an object?
ohaa [14]
The strength of the gravitational forces between two masses depends on

--  the product of the masses,

-- the distance between their centers of mass.
3 0
3 years ago
Read 2 more answers
Select the correct answer from each drop-down menu.
bagirrra123 [75]

Answer:

(1) An object that’s negatively charged has more electrons than protons.

(2) An object that’s positively charged has fewer electrons than protons.

(3) An object that’s not charged has the same number of electrons than protons.

Explanation :

Objects have three subatomic particles that are Electrons, protons, and neutrons.

Protons and neutrons are found in the nucleus and electrons rotate or move outside the nucleus. Naturally, protons are positively charged, neutrons have no charge, and electrons are negatively charged.

Therefore, an object that is negatively charged has more electrons than protons.  An object that is not charged has the same number of electrons than protons. An object that is positively charged has fewer electrons than protons.

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3 years ago
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