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Arada [10]
3 years ago
7

The average speed of a car that travels 500 km in 5 hours is

Physics
1 answer:
ASHA 777 [7]3 years ago
5 0

Answer:

100km/h

Explanation:

500km/5 = 100km per hour

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Do energy drinks actually provide energy?
denis-greek [22]

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Explanation:

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In my trigonometry class, we were assigned a problem on Angular and Linear Velocity.
Rzqust [24]

1) 0.0011 rad/s

2) 7667 m/s

Explanation:

1)

The angular velocity of an object in circular motion is equal to the rate of change of its angular position. Mathematically:

\omega=\frac{\theta}{t}

where

\theta is the angular displacement of the object

t is the time elapsed

\omega is the angular velocity

In this problem, the Hubble telescope completes an entire orbit in 95 minutes. The angle covered in one entire orbit is

\theta=2\pi rad

And the time taken is

t=95 min \cdot 60 =5700 s

Therefore, the angular velocity of the telescope is

\omega=\frac{2\pi}{5700}=0.0011 rad/s

2)

For an object in circular motion, the relationship between angular velocity and linear velocity is given by the equation

v=\omega r

where

v is the linear velocity

\omega is the angular velocity

r is the radius of the circular orbit

In this problem:

\omega=0.0011 rad/s is the angular velocity of the Hubble telescope

The telescope is at an altitude of

h = 600 km

over the Earth's surface, which has a radius of

R = 6370 km

So the actual radius of the Hubble's orbit is

r=R+h=6370+600=6970 km = 6.97\cdot 10^6 m

Therefore, the linear velocity of the telescope is:

v=\omega r=(0.0011)(6.97\cdot 10^6)=7667 m/s

4 0
3 years ago
Estimate the boiling point of water at a pressure of 1.1 atmosphere
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It is about 100oC at a pressure of 1.1 atmosphere. Hope this helps.
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A professional cyclist rides a bicycle that is 92 percent efficient. For every 100 joules of energy he exerts as input work on t
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0.92 =   Work Output / 100

Work Output = 0.92 * 100

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3 years ago
When do net force is applied to a moving object it still comes to rest because of its inertia
Paraphin [41]
That is false for that.
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3 years ago
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