21. Plot the points that are given in the table below, where time (in seconds) represents your z-axis and force (in newtons) represents your y-axis. Once you have plotted your graph, determine the value of the y-intercept.
Time (s)
1
4
Force (N)
22
46
78
94
10

The plum pudding model of the atom state that ?

Asled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slidesa distance d1 down the slope and then covers the distance d2 alongthe horizontal terrain before stopping. find the coefficient ofkinetic friction μk between the sled and the ground, assumingthat it is constant throughout the trip. find the coefficient of kinetic frictionμk. express your answer in terms of someor all of the variables d1, d2, and θ.

Which describes increasing the efficiency of energy resource