Look at the symbol. Which component in a circuit does it represent? A. conductor B. AC power source C. DC power source D. switch

a thundercloud whose base is 500m above the ground. The potential difference between the base of the cloud and the m ground is 200MV. A raindrop with a charge of 4.0 x 10-12C is in the region between the cloud and the ground.

Twin sisters, Gwen and Jackie, were both 20 years old in the year 2000. Jackie took off on a round trip to Vega, 25 light years away. She traveled at an average speed very close to the speed of light-say, 0.9999c.

A skateboarder, starting from rest, rolls down a 10.9-m ramp. When she arrives at the bottom of the ramp her speed is 6.74 m/s. (a) Determine the magnitude of her acceleration, assumed to be constant. (b) If the ramp is inclined at 26.

Which sentence uses the correct adverb to make a comparison? A.) Sherry writes to me most frequently than Pablo. B.) Sherry writes to me frequently than Pablo. C.) Sherry writes to me more frequently than Pablo.

Which procedure is an attempt to correct a genetic disorder by replacing a mutated gene with a normal allele? a. selective breeding b. cloning c. artificial selection d. gene therapy

How many additional electrons does this atom of oxygen need in its valence shell to satisfy the octet rule?

In the movie "Santa Claus is Coming to Town", the Mayor Burgermeister Meisterburger outlaws toys after tripping on a rubber duck. To make rubber ducks un-crushable while being delivered by Santa, the ducks are filled with an inert, harmless gas. A 2.

Which of the following represents a chemical change? rocks being smoothed by rapid water movement the pink color of a rose iron's attraction to a magnet decomposition of stone due to acid rain

How many grams of CO2 are in 3 mol of the compound?

o keep yourself warm in the winter, you heat a solid metal ball and place it on a stand in the center of your room. The ball has a radius of 20.0 cm and an emissivity of 0.790.