A system releases 680 kj of heat and does 150 kj of work on the surroundings. what is the change in internal energy of the system?

The atomic number is always equal to the atomic mass. True or False?

The people in a location in Florida mainly grow crops which need a lot of water. Which of these statements about the location best explains why the farmers grow crops which need a lot of water?

A child throws a ball with an initial speed of 8.00 m/s at an angle of 40.0° above the horizontal. The ball leaves her hand 1.00 m above the ground and experience negligible air resistance.

What effect does a tripling of the net force have upon the acceleration of the object?

Explain how the sun, moon and earth are positioned realtive to each other suring a new moon?

Which feature do highland climates have that lower elevation area do not? A tundra where there are no trees A tree line beyond which trees do not grow Permafrost, or a part of the ground that is permanently frozen An ice cap, or a permanent cover of

As shown in the figure below, Cindy rushes 30 mtoward her truck. She notices she forgot her lunch and returns back to the house. Her total travel time is 90s a. What is Cindy's average velocity over the 90s period? b.

Un atleta que recorre 100 m en 12 s

Assuming equal rates of acceleration in both cases, how much farther would you travel if braking from 59 mi/h to rest than from 25 mi/h?

A spherical balloon is filled with gas at a rate of 4 cm 3 / s. at what rate is the radius r changing with with respect to time when the volume v = 36 π cm 3?