The diagram below shows two rooms that are at different temperatures Room at
50°F
Room at
80°F
Closed door
Which statementbest describes what will happen as the door opens between the two rooms?
A The temperature in both rooms will become equal over time.
B
The temperature in each room will remain unchanged
C
The warmer room will cool down to 50 F.
D
The colder room will warm up to 80F

An engineer designs a roller coaster so that a car travels horizontally for 152 ft, then climbs 137 ft at an angle of 34.0° above the horizontal. it then moves 137 ft at an angle of 48.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)

Holes drilled several kilometers into earth’s crust provide direct evidence about earth’s interior in the form of

If you wanted to move an electron from the positive to the negative terminal of the battery, how much work w would you need to do on the electron? enter your answer numerically in joules.