All categories

3 years ago

How wide is the moon

2 answers:

7 0

The moon is very nearly a sphere (ball shape). We usually talk
about the "diameter" of a sphere, not its width.

The moon's diameter is about 2,159 miles or 3,475 kilometers.
That's about 27% (a little over a quarter) of the Earth's diameter.

lapo4ka [179]3 years ago

6 0

14.6 million square miles (38 square kilometers

You might be interested in

How much farther from the charge is the 2000 v equipotential surface than the 3000 v surface?

olganol [36]

Answer:

r1 -r2 = 3.75cm

Explanation:

Check the attached file for the solution

7 0

3 years ago

If skater A is more massive than skater B, how will skater A's motion compare to the motion of skater B?

adell [148]

<span>d) more information is needed in order to figure this out..... I would say because how large someone is would not change the direction of them while skating.</span>

7 0

3 years ago

49W

Nikolay [14]

Answer:

Explanation:

The magnitude of the electrostatic force between two charged particles is given by

$F=\frac{kq_1 q_2}{r^2}$

where

k is the Coulomb's constant

q1, q2 are the charges of the two particles

r is the separation between the particles

In this problem, the initial force between the particles is F.

Later, the distance between the two particles is increased by four, so

r' = 4r

So, the new force between the particles will be

$F'=\frac{kq_1 q_2}{(4r)^2}=\frac{kq_1 q_2}{16r^2}=\frac{1}{16}F$

So, the new force decreases by a factor of 16.

4 0

3 years ago

On a frictionless horizontal air table, puck A (with mass 0.252 kg ) is moving toward puck B (with mass 0.374 kg ), which is ini

geniusboy [140]

As we know that kinetic energy is given as

$KE = \frac{1}{2}mv^2$

Here we can find the initial speed of puck A by momentum conservation

$m_1v_{1i} + m_2v_{2i} = m_1v_{1f} + m_2v_{2f}$

$0.252\times v + 0 = 0.252\times (-0.115) + 0.374\times ( 0.650)$

$v = 0.850 m/s$

now here we will have initial kinetic energy of the mass is given as

$KE_i = \frac{1}{2}m_1v_1^2$

$KE_i = \frac{1}{2}(0.252)(0.850^2) = 0.091 J$

$KE_f = \frac{1}{2}(0.252)(-0.115)^2 + \frac{1}{2}(0.374)(0.650^2)$

$KE_f = 0.081 J$

now loss of energy is given as

$KE_i - KE_f = 0.091 - 0.081 = 0.010 J$

6 0

3 years ago

Give an example of how you could make a measurement that is, at the same time, very precise and very inaccurate

LekaFEV [45]

Answer:

Accuracy refers to how close a measurement is to the true or accepted value. ... Precision is independent of accuracy. That means it is possible to be very precise but not very accurate, and it is also possible to be accurate without being precise. The best quality scientific observations are both accurate and precise.

3 0

3 years ago