Heat engines converts what type of energy into mechanical energy?

1. chemical

2. thermal

3. nuclear

4. elastic

Complete the following statement: The interior of a thermos bottle is silvered to minimize heat transfer due to A. conduction and convection B. conduction C. conduction, convection and radiation D. conduction and radiation E. radiation.

Because of your knowledge of physics and interest in weapons, you've got a summer job with the FBI, your job is to determine if the weapon that was found at the scene of a crime was precisely the same with which the crime.

Which of the following is/are the best example (s) of elastic collision (s) ? Explain why you chose your answer (s). (A) A collision between two billiard balls. (B) A collision between two automobiles. (C) A basketball bouncing off the floor.

A current of 9 A flows through an electric device with a resistance of 43 ohms. What must be the applied voltage in this particular circuit? A. 387 V B. 4.8 A C. 387 A D. 4.8 V

Technician A says if a system fails to alter dwell when it should, the ignition control module needs to be adjusted to correct dwell timing.

What are some of the benefits of learned optimism that have been found in research? O A. Fewer health problems O O B. All of these C. Making more money O D. A lower divorce rate

Katie runs 6 km in 0.6 hour, then 5 km in 0.5 hour. Katie's average speed is __ per hour.

A derived unit is a combination of fundamental units. Which of the following is an example of a derived unit? a) centimeter (used to measure distance) b) gram (used to measure mass) c) cubic centimeter (used to measure volume)

Technician A says that a heater core leak can be the result of the coolant wearing a hole through the core. Technician B says that a core leak can be caused by chemical action eating a hole through the core. Who is correct?

If the Coast Guard warns of a giant wave of water approaching the shore as a result of a major earthquake, they are warning of a. an aftershock. b. liquefaction. c. a tsunami. d. landslides.