Peter wants to move a cabinet, with a mass of 90 kg ,across the floor. 1.what is the magnitude of static friction force before Peter touches the cabinet?

2.He increases the force to 200N , but tge cabinet does not move. what is the static frictional force?

3. A force of 350N is needed to bring the cabinet into motion. calculate the coefficient of static friction.

4. when Peter continues to push the crate ,he exerts a force of 300N to keep it moving at a constant velocity. calculate the coefficient of kinetic friction.​

What is the kinetic energy of a baseball moving at a speed of 40 m/s if the baseball has mass of 0.15 kg?

Consider a file currently consisting of 200 blocks. assume that the file control block (and the index block in the case of indexed allocation) is already in memory. calculate how many disk i/o operations are required for contiguous, linked, and indexed (single-level) allocation strategies, for each of the conditions listed below. in the contiguous-allocation case, assume that there is not room to grow at the beginning but there is room to grow at the end. also assume that the block information to be added is stored in memory.

Aforce of 8,480 n is applied to a cart to accelerate it at a rate of 26.5 m/s2. what is the mass of the cart? 865 kg 320 kg 12.1 kg 3.12 kg