A train whistle is at a higher pitch (note) as it approaches you and then drops to a lower pitch as it moves away. This effect is called?

A person does 100 joules of work in pulling back the string of a bow. what will be the initial speed of a 0.5 kg arrow when it is fired from the bow?

A mirror faces a cliff located some distance away. mounted on the cliff is a second mirror, directly opposite the first mirror and facing toward it. a gun is fired very close to the first mirror. the speed of sound is 336 m/s.

Express 4,560 m in km. Remember to keep the same number of significant figures in your answer as was in the original measurement.

Zone one, zone two, and the excess zone are used to describe which dimension of our communication styles? A. Maturity B. Intensity C. Predictability D. Flexibility

Which air mass provides the moisture that produces the clouds and precipitation?

Which describes a property shared by ultraviolet light and X-rays? A They are both transverse waves. B They share the same wavelength. C They contain less energy than visible light. D They both require a medium to travel through.

What is the potential energy called that is associated with objects that can be stretched

Which of the following is not a current use of radioisotopes? medical diagnosis sterilization of equipment detection of leaks in building structures light fixtures

A Blu-ray disc is approximately 11 centimeters in diameter. The drive motor of a Blu-ray player is able to rotate up to 10,000 revolutions per minute. (a) Find the maximum angular speed (in radians per second) of a Blu-ray disc as it rotates

A body has translatory motion if it moves along a