The angular velocity of a gear is controlled according to ω = 79 − 5t2 where ω, in radians per second, is positive in the clockwise sense and where t is the time in seconds. Find the net angular displacement Δθ (poisitive in the clockwise sense) from the time t = 0 to t = 4 s. Also find the total number of revolutions N through which the gear turns during the 4 seconds.

is the angular displacement in 4 seconds.

Explanation:

Given:

time of observation,

angular velocity as a function of time,

where:

angular velocity

time taken

Now for the angular displacement we integrate the expression of angular velocity:

is the angular displacement in 4 seconds.

Now the no. of revolutions made during this time;

b) returns freshwater to the earth.

c) returns freshwater to the earth.c) occurs after condensation.

d) returns freshwater to the earth.c) occurs after condensation.d) roughly equal to the amount of evaporation.

happy to

pls mark as brainliest.

1 - wave length

2 - amplitude

3 - crest

4 - trough

explanation:

duh.