Aclerk moves a box of cans down an aisle by pulling on a strap attached to the box. the clerk pulls with a force of 185.0 n at an angle of 25.0 degrees with the horizontal. the box has a mass of 35.0 kg, and the coefficient of kinetic friction between the box and the floor is 0.450. find the acceleration of the box.

Lets say that an object of a certain volume has a certin mass. what happens to its mass when you double its volume?

The x-coordinate of a particle in curvilinear motion is given by x = 3.1t3 - 4.9t where x is in feet and t is in seconds. the y-component of acceleration in feet per second squared is given by ay = 2.3t. if the particle has y-components y = 0 and vy = 5.0 ft/sec when t = 0, find the magnitudes of the velocity v and acceleration a when t = 1.8 sec. sketch the path for the first 1.8 seconds of motion, and show the velocity and acceleration vectors for t = 1.8 sec. answers: v = ft/sec a = ft/sec2

The magnetic field inside a superconducting solenoid is 4.50 t. the solenoid has an inner diameter of 6.20 cm and a length of 26.0 cm. determine (a) the magnetic energy density in the field and (b) the energy stored in the magnetic field within the solenoid.