Part 1 of 3 A block is at rest on the incline shown
in the figure. The coellicients of static and
kinetic frictio
Tespectivelv
The acceleration of gravity is 9.8 m/s? What is the frictional force acting on the
21 kg mass?
Answer in units of N.

part 2 of Q
What is the largest angle which the incline
can have so that the mass does not slide down
the incline?
Answer in units of degree’s

part 3 of 3
What is the acceleration of the block down
the incline if the angle of the inclime is 34°?
Answer in units of m/s?

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

What is a possible result of higher air temperature caused by global warming

4r-134a enters the condenser of a residential heat pump at 800 kpa and 50°c at a rate of 0.022 kg/s and leaves at 750 kpa subcooled by 3°c. the refrigerant enters the compressor at 200 kpa superheated by 4°c determine (a) the isentropic efficiency of the compressor, (b) the rate of heat supplied to the heated room, and (c) the cop of the heat pump. also, determine (d) the cop and rate of heat supplied to the heated room if this heat pump operated on the ideal vapor-compression cycle between the pressure limits of 200 and 800 kpa. (0.757, 4.37 kw, 5.12, 6.18, 3.91 kw)