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andrey2020 [161]
4 years ago
11

A planet has two moons with identical mass. Moon 1 is in a circular orbit of radius r. Moon 2 is in a circular orbit of radius 2

r. The magnitude of the gravitational force exerted by the planet on Moon 2 is which of the following compared with the gravitational force exerted by the planet on Moon 1?
half as largetwice as largeone-fourth as largefour times as largethe same
Physics
1 answer:
saw5 [17]4 years ago
7 0

Answer:

Half as large.

Explanation:

Using Newton's law of universal gravitation, if the mass of the planet is <em>M</em> and of the Moons 1 and 2 is <em>m</em>, them the force exerted by the planet on them will be:

F_1=\frac{GMm}{r}

F_2=\frac{GMm}{2r}

Which clearly shows that the force that the planet exerts on the Moon 2 is half  the force it exerts on the Moon 1.

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A planet has a surface temperature of 95.0 K and an atmospheric pressure of 1.60 atm. If 4.87 L of atmosphere has a mass of 28.6
mr Goodwill [35]

Answer:

M=28.88 gm/mol

Explanation:

Given that

T= 95 K

P= 1.6 atm

V= 4.87 L

m = 28.6 g

R=0.08206L atm .mol .K

We know that gas equation for ideal gas

P V = n R T

P=Pressure , V=Volume ,n=Moles,T= Temperature ,R=gas constant

Now by putting the values

P V = n R T

1.6 x 4.87  = n x 0.08206 x 95

n=0.99 moles

We know that number of moles given as

n=\dfrac{m}{M}

M=Molar mass

n=\dfrac{m}{M}

0.99=\dfrac{28.6}{M}

M=28.88 gm/mol

3 0
3 years ago
The magnification produced by spherical mirror is + 1/4. State the type of spherical mirror. State 3 characteristics of the imag
Alexeev081 [22]

Answer:

Convex mirror.

Explanation:

Image is real.

Image is inverted.

Image is magnified.

6 0
3 years ago
How can the effect of chromatic aberration be reduced?
kramer
The answer to the question:
<span>How can the effect of chromatic aberration be reduced?
A) by using multiple lenses
B) by reducing the focal length
C) by using a larger objective lens
D) by making the telescope larger

is:
</span>B) by reducing the focal length
6 0
3 years ago
Read 2 more answers
Thomas Newcomen was the first to produce a working steam engine. Why is the work of James Watt more widely known than the work o
LenaWriter [7]

Answer:

The steam engine of James watt is more efficient than Newcomen ans more suitable for the industrial revolution.

Explanation:

James Watt is more widely know for working steam engine because Watt has created better engine which is suitable for the industrial revolution. The steam engine of James watt is more efficient than Newcomen. Watt developed the condensing arrangement by using piston which lessen the initial pressure leading to effectively worked than Newcomen's

4 0
3 years ago
I’m not sure what the answer could be please help
sergiy2304 [10]

The answer could be: both forces are 1/4 as strong after the move.

(It is.)

5 0
3 years ago
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