What is a device made by joining two different materials to form a circuit that produces an electric current?

a. convertor

b. resistor

c. semiconductor

d. thermocouple

A 20000 kg rocket has a rocket motor that generates 3.0*105 n of thrust. part a what is the rocket's initial upward acceleration?

T one end of a production line, Isaac puts peaches into cans on a conveyor belt. He fills 22 cans per minute. As soon as Isaac has filled 655 cans on the conveyor belt, Albert starts putting lids on the cans at the other end of the production line.

Earth's troposphere hydrosphere and lithosphere contain large amounts of which element?

What force causes Earth to orbit the Sun? O O A. Magnetic force B. Nuclear force O C. Gravitational force O D. Elastic force

Calculate the work needed for a 65 kg person to climb through 4.0 m on the surface of (a) the Earth and (b) the Moon

Someone jumped from a high altitude at 31,000m above the earth. he freefalled for 4 min and 36 secs with top speed of 988 mph

What does the law of reflection mean?

Compared with the peak wavelength given off by the sun, what is the peak wavelength given off by a hotter star? A.) shorter in wavelength and higher in energy B.) shorter in wavelength and lower in energy C.

4. Explain the doppler effect. Be sure to talk about how the wave changes, the perceived change hear by a person that an emitted sound is moving towards, and the perceived change hear by a person that an emitted sound is moving away from. 5.

How do you calculate the effective resistance in a parallel circuit?