Which wave source can travel through the vacuum of space?

A cat lifting a barbell of 2.5 kg a distance of 3 meters. How much work is done lifting the barbell? How much work is done if the cat holds the barbell over his head for 3 minutes?

How much current flows through a resistor of 285 ohms if the potential difference across the resistor is 122 volts?

A truck driver is going opposite traffic on a one-way street. A police officer sees him but doesn't stop him. Why didn't the police officer stop him?

What is the SI Unit for amplitude?

Which is the SI base unit for mass?

How do the properties of salt compare with the properties of sodium and chlorine

Solve the problem. The Bay area of California was shaken by an earthquake on October 17, 1989. The epicenter was located at Loma Prieta. The diameter of the earthquake's horizontal waves that shocked the area measured about 120 miles.

Lightning is an example of matter in a liquid state. True False i am trying recheck my answers before i do i finish my home work so if i post a lot of questions i am srry ... ?

You want to place a mirror at a blind turn on the staircase in your house. Which would be best suited for this purpose? a. flat mirror b. plane mirror c. convex mirror d. concave mirror

Which will have the greatest effect on power consumption A.) add more circuit brakes and fuses B.) turn on all electric devices in a circuit C.) turn on only the electrical devices that use the most watts D.