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?

Compare the lunar phase of the Waxing Crescent to the Waxing Gibbous. A. The Waxing Crescent is increasing in illumination and the Waxing Gibbous is decreasing in illumination. B.

How long would it take to reach Jupiter? in years, months, days, hours?

The city bus traveled 30 miles in 30 minutes. What was its speed in mph? A. 2 mph B. 60 mph C. 16 mph

steve took a train 30 miles north to seattle then he took a different train 25 miles east draw a vector diagram showing steves trip including the resultant vector be sure to label all vectors

3. Read this sentence from the text: "Most of the solar radiation is absorbed by the atmosphere and much of what reaches the earth's surface is radiated back into the atmosphere to become heat energy." What can you conclude about heat energy? A.

Which of the following is an example of convection? A. hot air rising and cooler air falling B. a hot object transferring heat to a cooler one C. a hot oven warming the air around it D. the rays of the Sun warming the earth

A 50,000 kg locomotive is traveling at 10 m/s when its engine and brakes both fail. How far will the locomotive roll before it comes to a stop? Assume the track is level.

A rectangular loop of wire with sides 0.262 and 0.401 m lies in a plane perpendicular to a constant magnetic field (see part a of the drawing). The magnetic field has a magnitude of 0.

In the system you're inspecting the damper motor isn't working, You decide to see if the damper-postion sensor us sending the proper signal to the which then signals the damper motor. A. heating coil B. duckwork c. energy source D. controller

Which of the following statements does not describe the structure of an atom? a. An atom has a small, dense center called the nucleus. b. Inside the nucleus of an atom are protons and electrons. c. Protons are positively charged sub-atomic particles.