On a cold day, a heat pump absorbs heat from the outside air at 14°F (-10°C) and transfers it into a home at a temperature of 86°F (30°C). Determine the maximum κ of the heat pump.

Which statement is true about physical changes and chemical changes? A. Chemical changes are not observable. B. Chemical changes always produce new substances. C. Physical changes can change physical and chemical properties. D.

Air enters the combustor of a jet engine at P1 = 10 atm, T1 = 1000oR, and M1 = 0.2. Fuel is injected and burned, with a fuel-air ratio (by mass) of 0.06. The heat released during the combustion is 4.5 * * 108 ft-lb/slug of fuel.

Describe the location of non-metals on the periodic table? A) middle B) upper left corner C) lower left corner D) upper right corner

How does the statement " silence is golden " relate to ethics in communicating at the workplace.?

List the largest-aperture single telescope currently in use in each of the following bands of the electromagnetic spectrum: radio, X-ray, gamma ray.

What are four basic functions of a modern computer?

A 500g sample of Potassium-40 is left to decay radioactively. After 3.9 x 109 years, about how many grams of Potassium-40 are expected to remain? [The half-life of Potassium-40 is 1.3 x 109 years.]

A cartoon shows two friends watching an unoccupied car in free fall after it has rolled off a cliff. one friend says to the other "It goes from zero to sixty miles per hour in about three seconds." is this statement correct?

The ideal mechanical advantage of an inclined plane is 3.5, and its efficiency is 0.6. What is the mechanical advantage of the inclined plane?

True or false? a physical change is a change of matter from one form to another without a change in chemical properties