A driver sets out on a journey. For the first half of the distance she drives at the leisurely pace of 20 mi/h; she drives the second half at 60 mi/h. What is her average speed on this trip?.

Around faucet handle is part of a(n) a. lever b. screw c. inclined plane d. wheel and axle

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?

Asmall object with mass 0.200 kg swings back and forth on the lower end of a light rope that is 3.00 m long. the upper end of the rope is attached to the ceiling. as the object swings through its lowest position, where the rope is vertical, the speed of the object is 5.80 m/s. at this point in the motion, what is the tension in the rope? (use g = 9.80 m/s2.)