Calculate the amount of energy released per gram of peanut burned

When a DVD is played, a laser light hits the surface of the disk and then returns to the detector. Which wave phenomenon allows the DVD player to work? A. absorption B. interference C. reflection D. refraction

Which forces never result in motion?

The angle that the Sun's rays strike a region of Earth determines the amount of heat transferred true or false

A wave of wavelength 52 cm travels with frequency 400 Hz. What is the speed of the wave? Show all work

If a 60.1 kg person jumps onto a seesaw at an angle of 22 degrees at a distance of 6.9 m from the fulcrum. How much force will their friend feel if they are sitting 6.6 m on the opposite side of the seesaw?

What is a Rift Valley?

Double the resistance of the resistor by changing it from 10 Ω to 20 Ω. What happens to the current flowing through the circuit?

Who would most likely be required to work with sodium hydroxide? A: a plumber B: a gardener C: a bricklayer D: a mechanic

A roller coaster is entering a vertical loop which has a radius of 25.0 m. If the coaster is traveling at 45.0 m/s as it enters the loop, how much is the centripetal force that you experience? (Assume your mass to be 75.

Which best describes tropical continental climate during the summer? A. clear, dry weather, B. cloudy, wet weather, C. cold, dry weather, D. hot, dry weather