How much heat energy (in megajoules) is needed to convert 7 kilograms of ice at - 9 degrees Celsius to water at 0 degrees Celsius?

A) 3.09 MJ

B) 2.13 MJ

C) 2.48 MJ

D) 3.26 MJ

Which of the following has a noticeable gravity, earth, moon, sun, all above

What are the benefits of physical exercises?

The longer your travel distance, the more likely you are to encounter A insurance issues B. gas mileage issues C. unexpected hazards D. expected hazards

What is the charge carried by each sphere?

Jacques and Georgette meet in the middle of a lake while paddling in their canoes. They come to a complete stop and talk for a while. When they are ready to leave, Jacques pushes Georgette's canoe with a force F to separate the two canoes.

How do you say scuba dive in spanish

a boy hears the echo of his own voice from a distance hill after 0.8 seconds. If the speed of sound in air is 340m/s, calculate the distance of the hill from the boy.

Which of the following are found in plant cells buh not animal cells?

The diagram shows the field lines near the poles, X and Y, of two magnets Based on the field lines, what are the poles of the magnets? O X: north Y south X: south Y north X north Y north Х Y X south Y south

Why is it safe to watch an eclipse of the Moon but not an eclipse of the Sun