What is the change in internal energy if 60 j of heat are added to a system and the system does 40 j of work on its surroundings? use u = q - w.

What is the distance between Mars and Earth

3. However, until 2002, these three countries used different A. currents B. undercurrent C. currencies D. currency E. crosscurrent F. current G. currently

Which is true about Pluto A.) it has nearly as circular orbit B.) it is larger than Titan Mercury and the moon C.) it is the only body in the solar system without an atmosphere D.) it orbits near the Kepler belt

1. A 4 kg object is moving 15 m/s to the right. A 6 N force pushes for 5 seconds to the left. A. How much momentum does it start with? B. How much impulse acted on the object? C. What is it's change of momentum? D.

A teacher brings 3 gallons of juice on a field trip. There are 36 students on the trip. How many fluid ounces of juice does the teacher bring? Show your work.

How could you compare the energy carried in two different longitudinal waves

The instantaneous velocity of an object is the blank of the object with a blank

Which of the following best describes the earth's average surface temperature for the past 900,000 years? A. a steady warming trend B. fairly steady temperatures until recently C. prolonged periods of cooling and warming D.

What should you always include in a great summary? (Select all that apply) A. investigation plan B. possible errors C. predictions D. new questions

What are the "base units" in the S. I. system?