The number of cycles of a periodic process that occur per unit time is called the period
Indicate whether the statement is true or false
F
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A 10.0-g bouncy ball is confined in a 8.3-cm-long box (an infinite well). If we model the ball as a point particle, what is the minimum kinetic energy of the ball? (h = 6.626 × 10-34 J ? s)
A) 8.0 × 10-64 J B) 3.2 × 10-46 J C) 1.3 × 10-20 J D) zero
Simple molecules containing only carbon and hydrogen are referred to as
A) carbon hydrides B) hydrocarbons C) carbohydrides D) hydrogen carbides
What source of energy might keep water beneath the surface of Enceladus liquid?
A) tidal heating only B) radioactive decay only C) tidal heating and radioactive decay D) heat released from a partially molten core
Three point charges, two positive and one negative, each having a magnitude of 20 ?C are placed at the vertices of an equilateral triangle (30 cm on a side). What is the magnitude of the electrostatic force on one of the positive charges?
a. 69 N b. 40 N c. 80 N d. 57 N e. 20 N