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