Which describes what happens when fuel is ignited in a heat engine?

What does it mean for waves to be absorbed by a certain medium? Make sure to include energy in your explanation.

Suppose that diameters of a new species of apple have a bell-shaped distribution with a mean of 7.2cm and a standard deviation of 0.38cm. Using the empirical rule, what percentage of the apples have diameters that are no more than 7.96cm

Sphere rolling uphill a hollow sphere is rolling along a horizontal floor at 5.0 m/s when it comes to a 30 degree incline. how far up the incline does it roll before reversing direction?

A force of 100 N acts upward. Resolve this force into 2 components; one that acts 30º north of west and one that acts 60º north of east.

A metronome indicates: a. the number of beats per measure. b. an exact number of beats per minute for the desired tempo. c. the arrangement of rhythms over meter. d. where the accented beats fall in each measure.

A student pulls a box across a horizontal floor at a constant speed of 4.0 meters per second by exerting a constant horizontal force of 45 newtons. approximately how much work does the student do against friction in moving the box 5.

The percentage of water vapor in the air compared to the maximum amount of water vapor that air can contain at a particular temperature.

A piano emits frequencies that range from a low of about 28 hertz to a high of about 4200 hz. find the range of wavelength in air attained by this instrument when the speed of sound in air in 342m / s

Which statement is true about a polarized object? A) It gains electrons and becomes negatively charged. B) It gains protons and becomes positively charged. C) The number of positive and negative charges can be the same. D) It has to be a metal.

Define the law of conservation of momentum in one sentence