A material that only conducts electric current under certain conditions is a (n)

a. conductor.

b. insulator.

c. semiconductor.

d. vacuum tube.

How does a star's appearance change based on the elements inside it?

How does the sound produced by a vibrating object in a medium reach your ear?

The acceleration of a particle moving only on a horizontal xy plane is given by, where is in meters per second squared and t is in seconds. At t 0, the position vector locates the particle, which then has the velocity vector. At t 4.

Try this out. Use a calculator! We can use the formula KE=0.5m*V^2. To find the kinetic energy (KE) of a payload of mass (m) 100 kg as it flies through the air at the velocity (v) of 55 m/s. (Multiply 0.5 x the mass x velocity squared.

Most applications will ask you to provide all of the following information except: A. how long you want to work for the establishment. B. days and hours that you are available to work. C. the date you can start work. D. your desired salary or wage.

If you had a positive 8 score on the sit-an-reach test you

65 million years ago there was a mass extinction that is best known for killing the dinosaurs. There was also a large deposit of dust that contained substances only found in asteroids.

Near which location in New York State would a geologist have the greatest chance of finding dinosaur footprints in the surface bedrock?

E=mc^2 solve for c E/m m/E sqrt (E/m) sqrt (m/E) E - m sqrt (E-m)

For resonance to occur, the object must experience a frequency equal to its what? amplitude period wavelength natural frequency