If the actual mechanical advantage of a machine is 4.2, and the input force is 10.0 n, what is the output force?
2.3 n
42 n
0.42 n
10 n

When the velocity of an object is doubled, by what factor is its momentum changed? by what factor is its kinetic energy changed? a) the momentum is zero. b) the momentum is not zero. c) difficult to say.

Two technicians are discussing a resistance measurement between the can-h and can-l wires. technician a says this measurement should be done with the ignition switch in the "run" position. technician b states that a measurement of 0 ohms indicates an open in the network. which technician is correct?

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?