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vovikov84 [41]
4 years ago
9

Calculate the kinetic energy in joules of a 1500 kg automobile moving at 17 m/s . express your answer to two significant figures

and include the appropriate units.
Physics
1 answer:
Sidana [21]4 years ago
6 0
Kinetic energy = 1/2 (mass)*(velocity)^2

ke = 1/2 (1500kg) (17m/s)^2
ke = 216750 kg*m^2/s^2 = 216750 Joules

(sorry, I don't know significant figures. but this is otherwise the correct answer with the right units. hope this helps!! :))
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3 years ago
What does ROCAPV mean? It says related to electricity.
Maurinko [17]

Answer:  Rancho de Area Comunes PV

Explanation: it means

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4 years ago
6. Mithra is an unknown planet that has two airless moons. A and B, in circular orbits around it.
Ainat [17]

The acceleration of gravity on Moon B is D) 0.25 m/s2

Explanation:

The data listed in the problem are not clear: find them in the table attached.

The acceleration of gravity on a planet is given by the following equation:

g=\frac{GM}{R^2}

where:

G=6.67\cdot 10^{-11} m^3 kg^{-1}s^{-2} is the gravitational constant

M is the mass of the planet

R is the radius of the planet

Here we want to find the acceleration of gravity on the surface of Moon B, which has the following data:

M=1.5\cdot 10^{20} kg (mass)

R=2.0\cdot 10^5 m (radius)

And substituting into the equation, we find:

g=\frac{(6.67\cdot 10^{-11})(1.5\cdot 10^{20})}{(2.0\cdot 10^5)^2}=0.25 m/s^2

Learn more about gravity:

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4 0
3 years ago
If the area of a concrete slap weighing 300n is 400cm2 ,how much pressure can it apply when kept on the ground
aleksklad [387]

Answer:

7500 N/m²

Explanation:

From the question given above, the following data were obtained:

Force (F) = 300 N

Area (A) = 400 cm²

Pressure (P) =?

Next, we shall convert 400 cm² to m². This can be obtained as follow:

1×10⁴ cm² = 1 m²

Therefore,

400 cm² = 400 cm² × 1 m² / 1×10⁴ cm²

400 cm² = 0.04 m²

Finally, we shall determine the pressure. This can be obtained as follow:

Force (F) = 300 N

Area (A) = 0.04 m²

Pressure (P) =?

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P = 7500 N/m²

3 0
3 years ago
Velocity requires speed and?
Nonamiya [84]

Answer:

I think it's acceleration.

Explanation:

tell me if I am wrong.

4 0
3 years ago
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