The tape in a videotape cassette has a total length 240 m and can play for 2.1 h. as the tape starts to play, the full reel has an outer radius of 47 mm and an inner radius of 11 mm. at some point during the play, both reels will have the same angular speed. what is this common angular speed?

When considering gravity acceleration and the force of acceleration, what must be true? a. the direction of acceleration must be perpendicular to the direction of the force. b. the direction of the force and the direction of acceleration must be the same as each other. c. the direction of the force and the direction of acceleration must be opposite of each other. d. the mass of the body must be the same as the acceleration of the body.

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

What pressure difference is required between the ends of a 2.0-m-long, 1.0-mm-diameter horizontal tube for 40 c water to flow through it at an average speed of 4.0 m/s?