Your portable phone's 12v battery is dead. it's a holiday and all the stores are closed. you do have two 1.5v batteries from your camera and a transformer with n1 = 100 turns on teh primary and n2 = 400 turns on the secondary. can you use the batteries and transformer to get your phone operating? if so, how would you do it? if not, why not?

Within a pendulum, as potential energy decreases, energy increases. a. heat b. kinetic c. frictional d. gravitational

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?

Steelhead trout migrate up stream to spawn. occasionally they need to leap up small waterfalls to continue their journey. fortunately, steelhead are remarkable jumpers, capable of leaving the water at a speed of 8.0 m/s. a. what is the maximum height a steelhead trout can jump? b. leaving the water at 8.0 m/s, the trout lands on top of the water fall 1.8 m high. how long was it in the air?