A sound wave that has a wavelength of 2 m in room-temperature air has a frequency of about

A. 170 Hz.

B. 1360 Hz.

C. 2040 Hz.

D. none of the above

What type of machine are wire cutter pliers? Simple machine. Mechanical machine. Complex machine. Compound machine.

In a circular loop of wire lying on a horizontal floor, the current is constant and, to a person looking downward, has a clockwise direction. The accompanying magnetic field at the center of the circle is directed a) horizontally and to the east.

Why can the volume of a sample of plasma change when the substance is moved from one substance is moved from one container to another? A. Plasma is made of charged ions and electrons, so they interact differently in different places. B.

1. Plastic, rubber, and wood are examples of what kind of material? 2. Name the 3 methods that can charge up objects. 3. Which part of the atom is negatively charged? 4.

A 500g object falls off a cliff and losers 100 J from its gravitational potential energy store. if the gravitational field strength g=9.8N/kg, how high is the cliff?

Some people refer to nuclear power as "clean energy." Why do they make this argument? Do you agree or disagree? Explain your answer.

What does thermal energy mean?

Oil having a density of 924 kg/m 3 floats on water. A rectangular block of wood 3.79 cm high and with a density of 970 kg/m3 floats partly in the oil and partly in the water. The oil completely covers the block.

Where does the energy that is used to ride a bicycle up a hill come from and how is it classified?

Explain how the energy of a rubber ball is transformed as it rolls down a ramp.