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2 years ago

This table shows the weights of four different objects that are sitting on the

Physics

1 answer:

bekas [8.4K]2 years ago

6 0

I think that it would be A

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Imagine that the earth and the-moon have positive charges of the same magnitud. How big isäºthe charge necesary to produce an el

lions [1.4K]

Answer:

5.7 x 10^12 C

Explanation:

Let the charge on earth and moon is q.

mass of earth, Me = 5.972 x 10^24 kg

mass of moon, Mm = 7.35 x 10^22 kg

Let d be the distance between earth and moon.

the gravitational force between them is

$F_{g}=G\frac{M_{e} \times M_{m}}{d^{2}}$

The electrostatic force between them is

$F_{e}=\frac{Kq^{2}}{d^{2}}$

According to the question

1 % of Fg = Fe

$0.01 \times 6.67\times10^{-11}\frac{5.97 \times 10^{24}\times7.35 \times 10^{22}}{d^{2}}=9 \times 10^{9}\frac{q^{2}}{d^{2}}$

$2.927 \times 10^{35}=9 \times10^{9}q^{2}$

$3.25 \times 10^{25}=q^{2}$

q = 5.7 x 10^12 C

Thus, the charge on earth and the moon is 5.7 x 10^12 C.

6 0

2 years ago

Fill in the blank for four and five answer. Question for number 6.

ehidna [41]

Increase .... decrease .... presumably it's the "best shape" for a body which has been formed by the gravitational force

7 0

2 years ago

A box slides downwards at a constant velocity on an inclined surface that has a coefficient of friction uK = .58 The angle of th

mojhsa [17]

Answer: The angle of inclination is nearly 30°

Explanation:

For a body on an inclined plane, the coefficient of friction between the body and the plane is equal to the ratio of the moving force applied to the body to the frictional force acting on the body.

If uK coefficient of friction;

Fm is the moving force

R is the normal reaction on the body

Mathematically uK = Fm/R

Fm = WSin(theta)

R = Wcos(theta)

uK = Wsin(theta)/Wcos(theta)

uK = tan(theta)

theta = arctan(uK)

If uK is 0.58

theta = arctan0.58

theta = 30°

The angle of the inclined will be 30°

7 0

2 years ago

Convert 592 minutes to seconds. using one step conversion.

vovangra [49]

Answer:

35520

Explanation:

592 times 60=35520

8 0

2 years ago

Are Styrofoam and wood the same temperature, if they are not what are each others temperature

Olenka [21]

They are almost the same temperature!!

3 0

2 years ago