A cat kicks a 0.43\,\text {kg}0.43kg0, point, 43, start text, k, g, end text cheese block that was initially at rest. The net force on the cheese over time is shown below. What is the cheese's speed at t =20\,\text {ms}t=20mst, equals, 20, start text, m, s, end text?
Round answer to two significant figures.
Note that time is in \text{ms}msstart text, m, s, end text.

An electromagnet is a device in which moving electric chargers in a coil of wire create a magnet.whats one advantage of using electromagnetic in devices

Aparticle's position is given by x = 3.00 - 9.00t + 3t2, in which x is in meters and t is in seconds. (a) what is its velocity at t = 1 s? (b) is it moving in the positive or negative direction of x just then? (c) what is its speed just then? (d) is the speed increasing or decreasing just then? (try answering the next two questions without further calculation.) (e) is there ever an instant when the velocity is zero? if so, give the time t; if not, answer "0". (f) is there a time after t = 3 s when the particle is moving in the negative direction of x? if so, give the time t; if not, answer "0".

Two waves maximally constructively interfere at a point in space. among the options below, select the possible value of their phase difference at that point in space.a. zerob. πc. π/2d. not determinable by the information provided