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

Who tried to unify the electromagnetic and gravitational force but was unsuccessful?

Which is an example of a passive solar energy system? 1.) sunlight captured by solar cells charges batteries in the basement 2.) sunlight shining through windows warms a massive interior wall 3.

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 person in a rocking chair completes 14 cycles in 22 seconds. Part A) what is the period of the rocking?. Part B) what is the frequency of the rocking?.

A transformer's secondary coil has twice as many turns as its primary. If the primary is connected to 6 V of DC, how many volts are induced in the secondary?

How does a car's kinetic energy change when it speeds up from 10 to 20 m/s? a. It quadruples. b. It stays the same. c. It doubles. d. It triples.

A boulder on the mythical planet mongo drops off a cliff and falls from rest 1000 m in 10.0 s. (A) what's the initial speed of the Boulder? (B) determine the acceleration due to gravity on mongo. Ignore friction.

The half-life of carbon-14 is 5730 years. How long will it take for the number of carbon-14 nuclei in a sample to drop to a quarter of the original number? Enter your answer as a number years

Which object has more thermal energy a bowl of soup or pot of soup

When you look into a clear pond, a fish may appear to be in a different position than it actually is. What is this caused by? A. diffraction B. dispersion C. refraction D. reflection,