A 0.4-kg toy train car moving forward at 3 m/s collides with and sticks to a 0.8-kg toy car that is traveling in the opposite direction at - 2 m/s. What is the size and direction of the final velocity of the two cars

What happens to the current provided by a power source as more resistors are connected in series?

A plane designed for vertical takeoff has a mass of 8.0 * 10³ kg. Find the net work done by all forces on the plane as it accelerates upward at 1.0 m/s² through a distance of 30.0 m after starting from rest.

Explain how the particles of solids move

A pair of electrically charged objects attract each other with a force of 4 N when they are a distance of 3 m apart. If their charges stay the same, then what will be the attractive force between them when they are 6 m apart

2. How does the electrical force relate to the charge of an object? a. It is inversely proportional to the square of the charge. b. It is directly proportional to the square of the charge. C. It is inversely proportional to the charge. d.

How much energy (in joules) is required to evaporate 0.0005 kg of liquid ammonia to vapor at the same temperature?

It is 5.5 km from your home to the physics lab. As part of your physical fitness program, you could run that distance at 10 km/h (which uses up energy at the rate of 700 W), or you could walk it leisurely at 3.0 km/h (which uses energy at 290 W).

The largest volcanic structures on venus are called:

a block with a mass of 3 kg is swung on a cord in a horizontal circle with a radius of 2m. the speed of the block is 6m/s^. the magnitude of the acceleration of the block is most nearly

A scientific theory becomes more widley accepted as it explains more and more?