Please help! Explain how a carbon-zinc dry cell produces a voltage difference between the positive and negative terminals.

If the wheels lock when braking suddenly the vehicle: a: loses traction b: lose steering wheel ability c: gain speed slightly d: gain steering ability

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n