A block of mass 2 kg slides along a horizontal tabletop. A horizontal applied force of 12 N and a vertical applied force of 15 N act on the block, as shown above. What is the
normal force exerted on the block?

A) 13N
B) 17 N
C) 20 N
D) 27 N
E) 35 N

Justification:

Air enters a compressor operating at steady state at 1.05 bar, 300 k, with a volumetric flow rate of 93 m3/min and exits at 12 bar, 400 k. heat transfer occurs at a rate of 15.5 kw from the compressor to its surroundings. assuming the ideal gas model for air neglecting kinetic potential energy effects, determine the power in put in kw.

Aknife blade is a(n) a. lever b. screw c. wedge d. inclined plane

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?