Select the correct answer.

Which is a form of kinetic energy

A

gavitational energy

B. chemical energy

C. electrical energy

D. sound energy

Jenny and Fred both play a long note on their trombones. A stationary observer hears the sound increasing and decreasing repeatedly in loudness. Which of these must be true? A.

Which of the following is a scalar quantity? O A. 8 km/hr down O B. 45 ft to the right O C. 100 ft/min O D. 25 m/s south

In order to analyze a circuit correctly, what values should be known? A. resistances of resistors and voltages of batteries B. size of batteries and time elapsed C. temperatures of resistors and current of batteries D. thickness and length of wires

What do you need to make 100 minutes charges neutral

When work is done by a system and no heat is added, the temperature of the system?

A proper cool-down routine includes which of the following?

What is a Rift Valley?

Double the resistance of the resistor by changing it from 10 Ω to 20 Ω. What happens to the current flowing through the circuit?

Who would most likely be required to work with sodium hydroxide? A: a plumber B: a gardener C: a bricklayer D: a mechanic

A roller coaster is entering a vertical loop which has a radius of 25.0 m. If the coaster is traveling at 45.0 m/s as it enters the loop, how much is the centripetal force that you experience? (Assume your mass to be 75.