What is the difference between ac vs dc currents

Suppose an ice hockey puck strikes a hockey stick that lies flat on the ice and is free to move in any direction.

Suppose a rock is dropped off a cliff with an initial speed of 0m/s. What is the rocks speed after 5 secounds, in m/s, if it encounters no air resistance?

One reason you should avoid taking risks as a driver is: a. All risks have the potential to cause deathB. There's no way of knowing what is dangerousC. The payoff of most risks is insignificant

3. A stone is thrown upward at an angle. What happens to the horizontal component of its velocity as it rises

Select to show the energy of pendulum 1. Be sure that friction is set to none. Drag the pendulum to an angle (with respect to the vertical) of 30∘, and then release it. When the pendulum is at - 30∘, what form (s) of energy does it have?

Which universal force acts on protons and neutrons in an atom's nucleus?

How many turns are in the secondary coil of a step up transformer that increases voltage from 30 V to 150 V and has seven turns in the primary coil?

What is a nuclear bulge? a) The bulging corner of a spiral galaxy consisting of gas in the shape of a spiral sphere that circles a galaxy b) The bulging center of a spiral galaxy consisting of debris in the shape of a flattened sphere that circles a

Your friend of mass 50 kg can just barely float in fresh water. Calculate her approximate volume.

A flashlight beam strikes the surface of a pane of glass (n = 1.50) at a 61° angle to the normal. what is the angle of refraction?