Which has more thermal energy, 1 kg of aluminum at 20°c or 1 kg of gold at 20°c

A train rolls to a stop along a horizontal track without the conductor applying the brakes. What answer choice BEST explains why this occurred?

Analyze why we say an object is accelerating when we usually mean that it is speeding up and an object slowing down also is accelerating

How far away is Pluto?

What is the velocity of an object that has a momentum of 4000 kg-m/a and a mass of 115 kg

A bicyclist in the Tour de France crests a mountain pass as he moves at 15 km/h. At the bottom, 4.2 km farther, his speed is 65 km/h. Estimate his average acceleration while riding down the mountain.

With your bare feet, stand with one foot on a rug, and the other foot on a tile, linoleum, or wood floor. Which one feels colder? Which one is really colder? Explain what is going on in a paragraph.

A firewoman dropped a person onto the safety net. Right before the person hit the net he had a velocity of 11.2 m/s and 1800 J of kinetic energy. What was the mass of the person?

What causes standing wave?

If you lived downhill from a volcano and lava started to flow toward your home what could happen?

A battleship simultaneously fires two shells toward two identical enemy ships. One shell hits ship A, which is close by, and the other hits ship B, which is farther away. The two shells are fired at the same speed.