This question is typical on some driver’s license exams: a car moving at 45 km/h skids
14 m with locked brakes.
how far will the car skid with locked brakes
at 112.5 km/h? assume that energy loss is
due only to sliding friction.
answer in units of m.

Unpolarized light whose intensity is 1.19 w/ is incident on a polarizer. (a) what is the intensity of the light leaving the polarizer? (b) if the analyzer is set at an angle of = 41.0∘ with respect to the polarizer, what is the intensity of the light that reaches the photocell?

Which of the following changes will increase the capacitance of a parallel-plate capacitor? (there could be more than one correct choice.) a) increase the charge on the plates b) decrease the poten5al between the plates c) increase the potential between the plates d) introduce a dielectric material between the plates e) decrease the separation between the plates

Name two kinds of practical electric pumps.