A crane uses an average force of 5,200 N to lift a girder 25 m. How much work does the crane do on the girder?

The crankshaft in a race car goes from rest to 3000 rpm in 3.0 s. (a) What is the crankshaft's angular acceleration? (b) How many revolutions does it make while reaching 3000 rpm?

Which statement correctly describes the movement of thermal energy according to the second law of thermodynamics? The natural tendency of systems is for heat to flow from a cooler object to a warmer one.

The atmosphere is composed of five?

Which of the following elements would you expect to be most reactive, based on the number of valence electrons it has? A. Magnesium (Mg) B. Sodium (Na) C. Aluminum (Al) D. Sulfur (S)

A frog has a genetic mutation in its skin cells that causes part of its skin to turn orange. The frog will not pass this genetic onto its offspring because

The train speeds passed Holly at 70 km/h north ward. This spider crawls past lukes foot in the same direction at 30 m/h. What is the velocity of the spider relative to Holly?

What is the name of a particle with no charge in an atom?

What voltage produces a current of 500 amps with a resistance of 50 ohms?

What is cell in electricity?

When a siren is approaching you, how does the wavelength of the waves reaching you compare to the actual wavelength that the siren emits?