What is the impulse of a 5 N force acting for 15 s? * 3 N. S
15 N. S
O
20 N:s
75 N:s

Explain why the aperture of the spherical mirror should be small compared to the radius of curvature of the mirror.

Ammonia enters the expansion valve of a refrigeration system at a pressure of 10 bar and a temperature of 18oc and exits at 6.0 bar. the refrigerant undergoes a throttling process. determine the temperature, in oc, and the quality of the refrigerant at the exit of the expansion valve.

Asher cycles 12 miles in 16 hours. what is his speed?