A 5.0 kg crate slides down a smooth ramp that is elevated at an angle of 38 degrees. The length of the ramp is 2.0 m. What will be the speed of the crate at the bottom of the ramp?

Calculate a pendulums frequency of oscillation (in hz) if the pendulum completes one cycle in 0.5s.

If jason ii needs 15 kw of power at 300 volts to operate, what amperage of current must flow through the cable?

20) what is a magnetic field? 21) in which direction do magnetic field lines always point? 22) sketch a diagram showing how a plotting compass points around a 23) name two magnetic poles that will: a) attract each other b) repel each other. 24) explain why you can use a compass to navigate. 25) what's an electromagnet? 26) list two ways to increase the strength of an electromagnet. 27) the wire in a simple motor feels a force when a current flows through it. why is this? i need answers to check mine