Becky has a shower and uses 20,000g of water with a specific heat capacity of 4200J/KG. When the water is supplied with 336,000J of energy, it heats up to 50^c. What is the startig temperature of the water?

Two friends are standing on opposite ends of a canoe that is initially at rest with respect to a frictionless lake. The person in the front throws a very massive ball toward the back, and the person in the back catches it.

In an experiment you are performing, your lab partner has measured the distance a cart has traveled: 28.4inch. You need the distance in units of centimeter and you know the unit equality 1inch

The science that uses principles of physics to understand the human machine is called

Which of the following statements describes a battery? Batteries store electric charge. The negative electrode of a battery has an excess of positive charge. Batteries use electrolytes and similar metals to produce a flow of electrons.

A wave has a period of 4 seconds. What is its frequency?

What are some things cyclists do to reduce friction?

A person with his ear to the ground, sees a huge stone strikethe concrete pavement. A moment later two sounds are heard from theimpact: one travels n the air and the other in the concrete, andthey are 2.2 s apart.

An athlete on a sled is moving with a speed of 3.0 m/s across a pond covered with ice. If the total mass of the sled-athlete system is 95.0 kg, what magnitude of the average force is required to bring the sled to rest in 15.0 s

What device is used for side mirrors on automobiles

In order for an object to accelerate, what must be applied?