Which of the following does not represent a mechanical wave?

sound

waves in the ocean

waves in a wheat field

light

If a circuit has a voltage of 250 volts and a resistance of 25 ohms, what are the amps for the current in the circuit?

Some neodymium glass lasers can provide 100TW of power in 1.0 ns pulses at a wavelength of 0.26 micrometers. how much energy is contained in a single pulse?

Which family or group describe the elements in column 2? Group of answer choices nonmetals alkali metals transition metals alkaline earth metals

Explain why, under some circumstances, it is not advisable to weld a structure that is fabricated with a 3003 aluminum alloy. Hint: you may want to consult?

1. What are three things you think of when you think of energy?

With your bare feet, stand with one foot on a rug, and the other foot on a tile, linoleum, or wood floor. Which one feels colder? Which one is really colder? Explain what is going on in a paragraph.

A firewoman dropped a person onto the safety net. Right before the person hit the net he had a velocity of 11.2 m/s and 1800 J of kinetic energy. What was the mass of the person?

What causes standing wave?

If you lived downhill from a volcano and lava started to flow toward your home what could happen?

A battleship simultaneously fires two shells toward two identical enemy ships. One shell hits ship A, which is close by, and the other hits ship B, which is farther away. The two shells are fired at the same speed.