A railroad freight car with a mass of 29,000 kg is moving at 2.2 m/s when it runs into another car with a mass of 30,000 kg the second car is at rest the cars locked together what is the final velocity

A hockey puck is pushed by a stick with a force of 750 newton's. the puck tracked 2.0 meters in 0.30 seconds. how powerful is the push? (ignore frictional effects.) a. 1,500 W b. 5,000 W c. 112 W d. 450 W

How long will it take a rock dropped from 2.0 m above the surface of mercury to reach the ground?

An AC power source has an rms voltage of 120 V and operates at a frequency of 60.0 Hz. If a purely inductive circuit is made from the power source and a 46.8 H inductor, determine the inductive reactance and the rms current through the inductor.

What are the possible values of n and ml for an electron in a 3d orbital?

When is an element most likely to be unreactive? when it loses all of its valence electrons when its valence shell is completely full when its electrons move to higher energy levels when it shares all of its valence electrons

A 2-kg object is dropped from a height of 1000 m. What is the force of air resistance on the object when it reaches terminal velocity

What is the approximate increase in size from a 1 w to a 2w carbon resistor?

I am looking for this answer : Which shows a correct order of steps in the scientific method? develop a hypothesis, analyze data, make observations, draw conclusions make observations, draw conclusions, develop a hypothesis, analyze data.

A gas in a piston is compressed doing - 439 j of work, and its internal energy increases by 318 j. how much heat flows? (be careful with + and -. + w = expansion. + q = added, + u = temp goes up) (unit = j)

A loop of wire is placed in a uniform magnetic field. (a) For what orientation of the loop is the magnetic flux a maximum? The plane of the loop is perpendicular to the magnetic field. The plane of the loop is parallel to the magnetic field.