Answer:
A. f = 8 Hz
B. T = 0.125 s
C. λ = 0.0166 m = 16.6 mm
D. d = 7.98 m
Explanation:
A.
The frequency of the wave can be given as:
<u>f = 8 Hz</u>
B.
The time period will be:
<u>T = 0.125 s</u>
C.
The wavelength is given as:
<u>λ = 0.0166 m = 16.6 mm</u>
D.
The distance traveled in 1 minute can be found out as follows:
<u>d = 7.98 m</u>
I never did that right there
Answer:
Opposite to the motion of the car.
Explanation:
Please find the detailed solution below
The minimum input force she'll need to lift the ball is 35 N.
Explanation:
Mechanical advantage of a single pulley is 1. As, she applies 70 N of force to lift the bowling ball, so the output force(weight of the ball) is also 70 N.
Now, adding another pulley gives a mechanical advantage of 2. We have,
M.A = (Output Force)/(Input Force)
Substituting the values we get,
= 35 N
Input force equals to 35 N needs to be applied.