1. A box is sitting on a wooden ramp. The box has a mass of 25.0 kg. The coefficient of static friction is 0.375 and the coefficient of kinetic friction is 0.125 The ramp is at an
angle of 55.0°.

a. How much force is needed to start moving the box up the ramp?

b. How much force is needed to keep the box moving up at a constant velocity?

c. How much force is needed to accelerate the box up the ramp at 1.50 m/s??

d. If the pushing force is gone, what is the acceleration of the box DOWN the
ramp?

Please help

Athin plate moves between two parallel, horizontal, stationary flat surfaces at a constant velocity of v = 7.5 m/s. the two stationary surfaces are spaced 4 cm apart, and the medium between them is filled with oil whose viscosity is 0.9 n·s/m2. the part of the plate immersed in oil at any given time is 2 m long and 0.5 m wide. if the plate moves through the mid-plane between the surfaces, determine the force required to maintain this motion. what would your response be if the plate was 1 cm from the bottom surface (h2) and 3 cm from the top surface (h1)? if the plate moves through the mid-plane between the surfaces, the force required to maintain the motion will be n. if the plate was 1 cm from the bottom surface (h2) and 3 cm from the top (h1) surface, the force required to maintain the motion would be n.

Debbie places two shopping carts in a cart corral she pushes the first cart which then pushes a second cart what force is being exerted

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt