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2 years ago

The total energy of a 0.050 kg object travelling at 0.70 c is:

Physics

2 answers:

Elena L [17]2 years ago

8 0

Answer:

1.1025×10^15Joules

No correct option

Explanation:

The type of energy possessed by the object is kinetic energy. Kinetic energy is the energy due to virtue of an object motion.

KE = 1/2MV² where;

M is the mass of the car = 0.05kg

V is the velocity of the car

Since the car is traveling at 0.7c (c is the speed of light)

speed = 0.7c { 0.7(3×10^8)}

Speed = 2.1×10^8

Substituting this values in the formula given we have;

KE = 1/2×0.05×(2.1×10^8)²

KE = 1.1025×10^15Joules

No correct option.

finlep [7]2 years ago

3 0

What is the unit c denotes here

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Explanation:

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2 years ago

If you were to triple the size of the Earth (R = 3R⊕) and double the mass of the Earth (M = 2M⊕), how much would it change the g

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Answer:

Decreased by a factor of 4.5

Explanation:

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So when R is tripled and mass is doubled, we have the following ratio of the new gravity over the old ones:

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2 years ago

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Answer:

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Explanation:

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W = weight of the worker = mg

W Cosθ = Component of the weight of worker perpendicular to the surface of roof

W Sinθ = Component of the weight of worker parallel to the surface of roof

From the force diagram, for the worker not to slip, force equation must be

W Sinθ = f

mg Sinθ = f

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5 0

2 years ago

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Oksana_A [137]

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