Which of the following would require the greatest number of calories?

1. Heating 1 g of water from 10◦C to 80◦C

2. Heating 10 g of water from 10◦C to 40◦C

3. Heating 1000 g of water from 10◦C to 12◦C

4. Heating 100 g of water from 10◦C to 50◦C

Calculate the velocity of the boat immediately after, assuming it was initially at rest. The mass of the child is 25.0 kg and that of the boat is 30.0 kg. (Take the package's direction of motion as positive.)

What is an example of radiation

A compressed spring has elastic potential energy

Which of the following combination is not feasible to be in equilibrium: A. 10,10,10. C. 10,5,17 B. 5,10,12 D. 5,12,13 Also give explanation

If you were to drop a bowling ball and a feather from the top of a building the bowling ball would hit the ground first due to

The north and south poles of a magnetic field produced by an electromagnet will switch when the direction of the changes.

Mary and Chuck each pull at opposite ends of a rope. Chuck is stronger. Who will move backwards? Question 16 options: The rope will move but Mary and Chuck won't Both Mary and Chuck will move forward Chuck will move backwards Mary will move

Which class of lever has the fulcrum between the input force and the output force?

The refrigeration unit on an ice cream truck is rated at 35,500 Btu/hr. What is the amount of heat removed if is operates for 2.75 hours?

A process occurs in which a system's potential energy increases while the environment does work on the system.