Physics

The orbital speed for satellite orbiting very close to our surface is

8000 M/S

Mass varies with the

Amount of matter in the object

Where does a satellite in an elliptical orbit have the greatest kinetic Energy

At the point closest to the planet

Where does a satellite in the elliptical orbit have the greatest potential energy

At the point farthest from the planet

The moon falls toward earth in the sense that it falls

Beneath the straight line path it would take without gravity

The speed of a satellite in a circular orbit is

Constant

An object transported from the surface of Earth to the surface of the moon has its weight

Decreased

As the distance between two objects increase, the force of attraction between them....

Decreases

Ocean tides occur mainly because

Of different gravitational pulls of the moon on opposite sides of the earth

Consider a space probe three times as far from earth center. Compared at earths surface, it's gravitational attraction to earth is the distance is about...

One ninth as much

Planets remain in orbit while falling around the sun due to their

Tangential velocities

A solar eclipse happens when

The moon is between earth and the sun

Newton determined that the pull of earths gravity caused both apples and

The moon to fall toward earth

The fastest moving planet in the solar system is

The planet nearest to the sun

According to newtons law of universal gravitation, the force of attraction between two masses is directly proportional to...

The product of the two masses

The affects of the sun's pool on earth's oceans is much less visible than that of the moons pull because

The sun is so far away

An earth satellite is a projectile that falls around earth instead of falling into it

True

For some massive stars, gravitational collapse doesn't stop until the density of the star become so enormous that even light cannot escape. Such a star becomes a black hole. T/F

True

When the properties of space are all altered in such a way that mass in that space experiences a force, the space is said to contain a gravitational field. T/F

True

The force of attraction between two masses depends inversely on the square of the distance between the masses. Any law that has this kind of dependent on distance is called an inverse square law. T/F

Trur

Escaped speed from the surface of the earth is about

11.2 KM/S

A lunar eclipse happens when

Earth is between the moon and the sun

Newton didn't discover gravity, early humans discovered it whenever they fell. What Newton did discover is that gravity..

Extends throughout the universe

A spring tide occurs when earth, the son, and the moon are at a right angle to each other

False

I neap tied occurs when earth, the son, and the moon are at a right and go to each other. T/F

False

If earth were its present size but twice as massive, we would weigh less. T/F

False

The sum of the satellites kinetic energy and potential energy varies as a satellite orbits a planet. T/F

False

Neglecting air resistance, the escape speed from the surface of Earth is about 1 KM/S. T/F

False, 11.1 km/s

Weight is a measure of the

Force of gravity on an object

The attractive force between all objects in the universe is called

Gravity

If the mass of earth increased with no change in radius your rate would be

Increase

If the radius of earth is decreased with change in mass your weight would

Increase

Two objects moved toward each other because of gravitational pull. As the objecta get closer and closer the force between them...

Increases

What remains constant for a satellite in an elliptical orbit

It's total energy

The force of gravity increases with

Mass

The speed of a satellite in an elliptical orbit

Varies

Weight can be measured in

newtons