Which "sphere" does an astronomer most directly study?

a. biosphere

b. exosphere

c. geosphere

d. cryosphere E. atmosphere F. hydrosphere

Define, identify, and differentiate different forms of energy

Rearrange the kinetic energy equation so that velocity is the subject (kinetic energy equation = ek = 1/2 x mass x velocity ^2)

A rocket burns fuel to produce blank the force that moves the rocket forward

A package was determined to have a mass of 5.7 kilograms. What's the force of gravity acting on the package on earth?

An isotope has the same number of but a different number of than other atoms of the same element.

A chemical bond formed when Adams share three pairs of electrons is A. an ionic bond B. a single bond C. a double bond D. a Triple bond

A 1100 kg car rounds a circular turn of radius 24.6 m. Of the road is flat and the coefficient of static friction between the tires and the road is 0.59, how fast can the car go without skidding

What is the momentum of a 15 kg tire rolling down a hill at 3 m/s? 5 kg • m/s 18 kg • m/s 45 kg • m/s 60 kg • m/s

Which of Newton's laws, when combined algebraically with his law of universal gravitation, can be used to calculate Earth's mass? A) first B) second C) third

Why does a balloon filled with helium rise while a balloon filled with an equal volume of average atmospheric air does not? A. Helium has no mass, but air does. B. Helium increases the balloon's mass more than air. C.