A 2.1W iPod is used for 30 minutes. How much energy does it use?

An archer pull back the string of a release an arrow at at a target. Which kind of potential energy is transformed to cause the montion of arrow

A horse runs around a circular track that is 350.0 m long. He runs clockwise from the start line back to the start line, then turns back and goes counterclockwise back to the start line again. What is the horses displacement? A. 0 m B. 300.

A vessel contains 1 mol of O2 and 2mol of He. what is the value of'Cp/Cv ' of the mixture?

A 9 m3 container is filled with 300 kg of r-134a at 10°c. what is the specific enthalpy (kj/kg) of the r-134a in the container? (4 significant figures)

Why don't trade winds blow straight toward the equator Apex

High frequency sound waves have a shorter wavelength and a higher A. amplitude B. pitch C. wavelength? than low frequency sound waves

The difference between a hypothesis and an inference

How long would it take a 500 W electric motor to do 1.50 x 10^5 J of work?

The business practice of hiring workers in another country is known as globalization. insourcing. subcontracting. outsourcing.

A space vehicle is traveling at 2980 km/h relative to Earth when the exhausted rocket motor is disengaged and sent backward. The relative speed between the motor and the command module is then 94 km/h.