# Shared Flashcard Set

## Details

chapter 9 physics
yeah
24
Physics
12/15/2012

Term
 newton discovered..?
Definition
 that gravity is universal
Term
 according to newton, the greater the masses of the interaciting object, the..?
Definition
 greater the gravitational force between them.
Term
 according to newton, doubling the distance between two interacting objects...?
Definition
 divides by 4 the gravitational force between them.
Term
 inside a freely falling elevator, there would be no....
Definition
 appearant weight for you
Term
 the earths gravitational field extends...?
Definition
 both inside and outside the earth and throughout the entire universe
Term
 a black hole is..?
Definition
 simply the remains of a giant star that has undergone the gravitational collapse.
Term
 an object is placed exactly halfway between the earth and the moon. the object will fall toward the..
Definition
 earth
Term
 the amount of gravitational force that acts on the space shuttle while in its orbit is..?
Definition
 almost as much as the shuttles weight on the earths surface
Term
 a very massive object A and a less massive object B move toward each other under the influence of gravitation. which force, if either, is greater?
Definition
 both forces are the same
Term
 two objects move toward each other because of gravity. as the object gets closer and closer, the force between them...?
Definition
 inreases
Term
 if you drop a stone into a hole drilled all the way to the other side of the earth, the stone will..?
Definition
 speed up until it reaches the other side of the earth
Term
 inside a freely falling runway elevator, your...?
Definition
 apparent weight is zero.
Term
 passengers in a high-flying jumbo jet feel their normal weight in a flight, while passengers in the orbiting space shuttle do not. this is because passengers in the space shuttle are?
Definition
 without support forces
Term
 the reason the moon does not crash into the earth is that the...
Definition
 moon has a sufficient tangentail speed.
Term
 the factor most directly responsible for making a black hole invisible is its..?
Definition
 surface escape velocity
Term
 if the sun collapsed to a black hole, the earths gravitational attraction to it would be..
Definition
 the same
Term
 which is the most responsible for the ocean tides?
Definition
 the moon
Term
 the main reason ocean tides exist is that the pull of the moon.?
Definition
 is greater on oceans closer to the moon and less on oceans farther from the moon.
Term
 suppose the moon had twice as much mass as it is now does and still orbited the earth at he same distance, in that case, the ocean on earth wold be...?
Definition
 larger
Term
 an earth satellite is simply projectile
Definition
 freely falling around the earth
Term
 the tangential velocity of an earth satellite is its velocity..?
Definition
 parallel to the surface of the earth
Term
 planets would crash into the sun if it werent for..?
Definition
 their tangential velocities
Term
 what prevents satellites such as the space shuttle from alling?
Definition
 nothng they are continually falling as they orbit the earth
Term
 the circular path of a satellite orbiting the earth is characterized by a constant...?
Definition