A car is traveling at 20 meters/second and is brought to rest by applying brakes over a period of 4 seconds. What is its average
2 answers:
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Answer:
Speed of the wave is 7.87 m/s.
Explanation:
It is given that, tapping the surface of a pan of water generates 17.5 waves per second.
We know that the number of waves per second is called the frequency of a wave.
So, f = 17.5 Hz
Wavelength of each wave,
Speed of the wave is given by :
v = 7.87 m/s
So, the speed of the wave is 7.87 m/s. Hence, this is the required solution.
Complete Question
The diagram for this question is shown on the first uploaded image
Answer:
The value is
Explanation:
From the question we are told that
The length of the stretcher is
The weight of the stretcher is
The weight for Wayne is
The distance of center of gravity for Wayne from Chris is
Generally taking moment about the first end where Chris is
=> upward moment
Here is the force applied by Jamie
Generally taking moment about the second end where Jamie is
=> downward moment
Generally at equilibrium , the upward moment is equal to the downward moment
=>
=>
Answer:
The banking angle necessary for the race cars is 34.84°
Explanation:
For normal reaction the expression is: