Some refrigerators use propane as their energy source. What kind of energy do these refrigerators utilize?

A. Solar

B. Electricity

C. Natural gas

D. Petroleum

When compared to strong nuclear force, gravitational force is

So what would the answer for D be?

Which of the following is an advantage of using solar energy? A) it is expensive to maintain. B) it requires a high initial investment. C) it is a form of free and abundant energy. D) it requires good sun exposure.

If the earth were not tilted on its axis, what would you expect to happen? A) Days would be shorter than 24 hours. B) A year would be longer than 365 days. C) We would not have seasons like we do now. D) There would be no day and night, just days.

A 3-phase motor is connected to a 440V line and draws a current of 5A. If the power factor of the motor is the highest two digits in your KSU in percent (e. g.

What is the expected wavelength (in cm) of 10.5 ghz microwaves in free space?

There are 5,280 feet in 1 mile and 12 inches in one foot. How many inches are in a mile?

An anion is an atom that has lost electrons. True or False?

Question: Jane, looking for Tarzan, is running at top speed (4.5 m/s) and grabs a vine hanging vertically from a tall tree in the jungle.

Kim holds a pinwheel in the air and says it can be used to model a source of energy. Identify the type of energy Kim's pinwheel models. Explain the type of energy source used.