Agolf ball is at rest on the grass when a golfer walks up and applies 10 n of force to it. there is 2 n of friction, resulting in 8 n of net force. what will happen to the ball? (4 points)
it will remain at rest.
it will move in the direction opposite the net force.
it will move slowly at first, then speed up.
it will move in the direction of the net force.

Curious carl calculated the density of a cube to be 4.50 g/cm3. what is the density of the cube in g/l?

Lin yao looks at the back of a spoon. how should she describe her reflection? upside down and smaller upside down and larger right-side up and smaller right-side up and larger

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)