A 2-cylinder system is constructed so that the output cylinder’s area is 5 times bigger than the area of the input cylinder.  How does the input force compare to the output force?

Use the circuit diagram below to answer the questions that follow. (a)    What is the resistance of R1? (b)    What is the current through R2? (c)    What is the current through the energy source? (d)    What is the total resistance in the circuit?

(a)    Label the parts of the DC motor. (b)    Which way, clockwise or counter-clockwise, will the motor above rotate?  How do you know? 

Robert left home and went for a jog.  He jogged 2.0 km , then 3.0 km followed by 4.0 km .  What is Robert’s final position from home?

(a)    Give the energy transformation equation for a battery powered flashlight. (b)    Explain how the mechanical energy of a bouncing ball is conserved. 

If two 100 Ω resistors are placed in parallel, their total resistance changes by what factor compared to the same two 100 Ω resistors placed in series with each other:

A 60 kg snowboarder (including equipment) heads down a very slippery slope starting at a height of 100 m, from rest, above the flat surface at the bottom.  Use the Law of Conservation of Energy to determine the speed she could attain by the time she hits the flat (at the bottom of the hill)? 

___ valves can be used in hydraulic systems that require a rod to quickly extend to the point of work and then slowly extend once it is at the point of work.

___ is the size of a space or chamber measured in cubic units.

Coalescing fi lters should be installed as far as possible from the point of work.