Which process is used to make a semiconductor into a transistor?

A) removing valence electrons

B) adding a dopant

C) changing to a nonmetal

D) applying voltage across the surface

Which of the following correctly describes the result of a voltage difference? A. Charges more randomly B. Charges not to move C. Charges flow from low voltage areas to high voltage areas. D. Charges flow from high voltage areas to low voltage areas.

When mars is on the opposite side of the sun from earth, it is about 4.0*108km away. how long does it take a radio signal traveling at the speed of light, c=3.

The amount of gravity between 1kg of lead and Earth is ___ the amount of gravity between 1kg of marshmallows and Earth. a. greater than b. less than c. the same as d. none of the above

In your own words ... Describe Friction Force ... In your own words ... describe Applied force ...

Classify each of the following mixtures as homogeneous or heterogeneous: a mixture of oil and water air cereal in milk a glass of tea

Laser light of wavelength 470 nm shines on a pair of slits at normal incidence, producing a pattern of maxima on a large screen 92.0 cm away from the slits. The second order maximum is observed to be 31.7 cm away from the central maximum. a.

What does the slope of a line of best fit represent

A bowling ball is pushed with a force of 22.0N and accerlates at 5.5 m/s square. What is the mass of the bowling ball A - 4.0 kg B-0.25 kg C-25 kg D-4.00 kg

How to eat butter. I want to know how you all eat the butter.

What is the transfer of heat through a solid as a result of molecular action called? radiation convection conduction magnetism?