A28kg block is connected to an empty 1.35kg bucket by a cord running over a frictionless pulley. the coefficient of static friction between the table and the block is .450 and the coefficient of kinetic friction between the block and the table is .320. sand is gradually added to the bucket until the system just begins to move. calculate the mass of the sand added to the bucket

The 5-kg cylinder is initially at rest when it is placed in contact with the wall b and the rotor at a. if the rotor always maintains a constant clockwise angular velocity v = 6 rad> s, determine the initial angular acceleration of the cylinder. the coefficient of kinetic friction at the contacting surfaces b and c is mk = 0.2.

Select light for the type of wave, adjust the wavelength so that the light is red, and increase the amplitude of the light to the max. then, select the start button at the source location to begin producing the waves. light is a form of electromagnetic wave, containing oscillating electric and magnetic fields. the wave amplitude detector mentioned above shows how the electric field oscillates in time at the location of the probe. the amplitude of the wave at the location of the probe is equal to the maximum electric field measured. how does the amplitude of the wave depend on the distance from the source?

Anika asks eva to roll a basketball and then a bowling ball to her. which requires more force to roll, and why?