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jasenka [17]
3 years ago
13

A hypothetical planet has a mass of one-half that of the earth and a radius of twice that of the earth. what is the acceleration

due to gravity on the planet in terms of g, the acceleration due to gravity at the surface of the earth?
Physics
1 answer:
algol [13]3 years ago
3 0
Let m = mass of earth 
<span>let r = radius of earth </span>
<span>let a = acceleration due to gravity on earth </span>
<span>G = constant (it doesn't change) </span>

<span>If you plug in the mass and radius of the new planet, you get </span>

<span>a = G (.5m)/(2r)^2 </span>
<span>a = 1/8 (Gm/r^2) </span>

<span>so the acceleration on the new planet is 1/8 what it is here.</span>
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rjkz [21]

Answer:

The motion of the ball relative to the ground is stationary

The motion of the ball relative to the wagon is backwards

Explanation:

To describe the motion of the ball relative to the ground, we note that

Assuming the ball is perfectly round and rotate freely, then we have

Force on the ball due to motion of the wagon = 0 N,

Then by the law of motion, an object will remain at rest when no force is applied to it

Therefore, apart from rotation of the ball, it will remain no displacement relative to the ground.

The motion of the ball relative to the wagon

Relative to the wagon, the ball appears to be moving in the opposite direction to the wagon, that is backwards.

4 0
3 years ago
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What else is produced when sodium carbonate decomposes
zaharov [31]

Answer:

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Hope this will help you

4 0
3 years ago
Due today HELP HELP HELP
Anna [14]

Vas happenin!

Independent variable : amount of water each day

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5 0
2 years ago
A helicopter ambulance flew from one hospital to another in a straight line. The pilot had to change speed several times due to
Olenka [21]

Answer:

Explanation:

All the rest of the information is extraneous. The only 2 things you have to know are

d = 20 km

t = 8 minutes = 8/60 hours = 0.13333333

So the speed is s = d/t

s = 20/0.1333333 = 150 km/hour

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4 0
3 years ago
What are the magnitude and direction of electric field at the center of square?
Kobotan [32]

Answer:

hello the diagram related to this question is missing attached below is the missing diagram

Answer :

The magnitude of the electric field = 4KQ / L^2

direction = 45° east to south

Explanation:

The magnitude of the electric field = 4KQ / L^2

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6 0
2 years ago
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