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Flauer [41]
3 years ago
9

A cyclist rides in a circle with speed 8.1 m/s. What is his centripetal acceleration if the circle has a radius of 27 m? A. 3.3

m/s^2 B. 2.4 m/s^2 C. 0.3 m/s^2 D. 1.8 m/s^2
Physics
1 answer:
GarryVolchara [31]3 years ago
5 0
The answer would be B. 2.4 

You're welcome.
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A 200.0 kg piano is elevated by a crane to a height of 10.0 meters above a sidewalk. If the rope holding the piano breaks, what
Nitella [24]
All that business about the crane and the rope and the falling
is only there to confuse us.

The piano ended up 5 meters above the ground.

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notsponge [240]

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8 0
3 years ago
A 1400 kg aircraft going 40 m/s collides with a 1500 kg aircraft that is parked and they stick together after the collision and
Leni [432]

Answer:

67.6 m

Explanation:

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u = 19.3 m/s

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We also know that they skid for a time of

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Therefore, we can find their stopping distance using the following suvat equation

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And substituting, we find

s=(\frac{0+19.3}{2})(7)=67.6 m

6 0
3 years ago
What is the thinnest film of a coating with n = 1.39 on glass (n=1.52) for which destructive interference of the red component (
Illusion [34]
In optics, you have to create a layer of coating that is approximately 1/4 of the light's wavelength. The working equation for this problem is:

d = λ₀/4n, 
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Substituting the values,

d = (650 nm)/4(1.39)
<em>d = 116.9 nm</em>
8 0
4 years ago
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