Waves that are in phase when they meet . A.
have different frequencies
B.
pass given points at different times
C.
weaken one another
D.
strengthen one another

Apackage of supplies is dropped from a plane, and one second later a second package is dropped. neglecting air resistance, the relative velocity of the 1st package viewed from the second will 56) a) increase. b) be constant. c) be zero. d) depend upon their weight. e) decrease

The plum pudding model of the atom states that ?

An automobile steering wheel is shown. what is the ideal mechanical advantage? if the ama is 8, what is the efficiency of the steering wheel?