Is the use of a toaster 100% efficient? Why or why not

Which is the MOST accurate statement about the heating curve and energy? A) Moving from A to C the temperature and the kinetic energy increases. B) Moving from C to A the temperature decreases but the kinetic energy increases.

Why are slow twitch muscles more beneficiall than fast twitch mucles for cardiorespiratory fitness

Mass is a measure of the quantity of matter in an object. a. True b. False

Magnetic stripping is evidence of? A. Earths gravity B. Aurora boreails C. Sea floor spreading D. Van Allen belt

Which are characteristics of a ray when it hits a boundary and refracts, but not when it hits the boundary and reflects? Check all that apply. A. changes direction B. changes speed C. does not change direction D. does not change speed E.

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