Problem: at the local swimming hole, a favorite trick is torun
horizontally off a cliff that is 8.3m above the water. once diver
runs off the edge of the cliff, tucks into a ball androtates on the
way down with an average angular speed of 1.6rev/s.
ignore air resistance and determine the number of revolutions
shemakes while on the way down.

2 revolutions

Explanation:

Assume that when she runs off the edge of the 8.3m high cliff, her vertical speed is 0. So gravitational acceleration g = 9.8m/s2 is the only thing that makes her fall down. So we can use the following equation of motion to calculate the time it takes for her to fall down:

where s = 8.3 m is the distance that she falls, t is the time it takes to fall, which is what we are looking for

Since she rotates with an average angular speed of 1.6rev/s. The number of revolutions she would make within 1.3s is

i would say the answer is food.

hope this !

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.