Calculate the force that must be applied to an object weighing 25 pounds for it to be in equilibrium, if it is on a plane inclined at 45 °

17.7 lb

Explanation:

Assuming the force is parallel to the incline, draw a free body diagram of the object.  There are 3 forces:

Normal force N pushing perpendicular to the incline,

Weight force mg pulling down,

and applied force F pushing parallel to the incline.

Sum the forces in the parallel direction:

∑F = ma

F − mg sin 45° = 0

F = mg sin 45°

F = (25 lb) sin 45°

F = 17.7 lb

layers of the earth affect the waves and these effects are seen on instruiments such as seimometers

  distance on the y-axis and time on the x-axis.

explanation:

the instantaneous velocity = change in position/time taken

the slope of the graph should give instantaneous velocity.

  slope of a graph = change in value of y -axis / change in values of x -axis

  comparing both the equations

    change in value of y -axis = change in position

  change in values of x -axis = time taken

so position values should be on the y axis and time values should be on the x axis.

distance on the y-axis and time on the x-axis.