Can you please answer the following multiple choice Physics questions. No explanation needed will be happy to leave a great review. Thanks in advance.

What force F must be needed to lift the 44.5-kg block at constant velocity? (a) 22.3 N (b) 44.5 N (c) 218 N (d) 437 N 44.5 kg 2. A block of weight w is pushed to the right across a level surface at a constant velocity by a force P acting at an angle 0 above the horizontal, as shown. The magnitude of the normal force exerted on the block by the surface is (a) w + P sin 0 W (b) w - P sin 0 (C) 3 + P cos B (d) w - P cos 0 13. A 3.25-kg block of silver is dropped from rest at a height of 75.0 meters. One-third of the potential energy converted into heat energy which raises the temperature of the silver. The specific heat of silver is 234 joules pe kilogram per Celsius degree. What is the increase in temperature of silver? (a) 1.05 Co (b) 2.32 Co (c) 3.14 Co (d) 3.73 C' 14. Three point masses of 2.15 kg. 4.15 kg. and 5.75 kg are attached to a rod of negligible mass. as shown. 1.00 m 3.00 m 7.00 m 1:00 m O- 2.15 kg 4.15 kg 5.75 kg How far from the left end of the rod is the center of mass of this system located? (a) 3.40 m (b) 6.80 m (c) 10.2 m (d) 13.6 m The pressure exerted by the force F, on the piston of area A , is transmitted through the fluid without diminution. If Ag is greater than A,, which of the following will be true of the resulting upward force, Fa? A2 (a) Fa will be equal to F, initially. and then decrease. (b) Fy will be equal to FF. F2 (c) Fa will be less than Fa. Fluid Md) Fy will be greater than F1