Two tuning forks are played at the same time. One has a frequency of 490 Hz and the other is 488 Hz. How many beats per second are heard? 490 488 2 4

All of the listed human actions affect the nitrogen cycle with the exception of the A) use of agricultural fertilizers. B) runoff of pesticides into streams and lakes. C) production of sewage and animal wastes from farms.

Approximately how many watts does a human at rest generate (assuming a weight of 50,000 grams = 50 kilograms) ?

Explain the hierarchy relationship of the components of the universe, from galaxies to satellites. (moons)

What is the kinetic energy k of an electron with momentum 1.05*10-24 kilogram meters per second?

What is the commercial unit of energy.

A sound from a source has an intensity of 270 db when it is 1 m from the source. what is the intensity of the sound when it is 3 m from the source?

What experimental term is it when a ruler is dropped to the floor?

Where is most of the energy from incoming waves focused? A. spit B. headland C. underwater D. barrier beach

Exoplanets (planets outside our solar system) are an active area of modern research. Suppose you read an article stating that there is a newly discovered planetary system with three planets.

A car with a mass 1200 kg accelerates at 1.89 m/s2. What is the total force exerted by the car on the road (answer in N to two decimal places) ?