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chapter 9 physics
yeah
24
Physics
12/15/2012

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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
radial distance, acceleration, and speed