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How can we measure gravitational acceleration rolling ball experiment? Explain two separate procedure in 4 sentences.

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Thruth or false 1. The gravitational field is a vector quantity. 2. You spin around your head a small mass on a rope. If you increase the radius while maintaining the same pull force on the string, you will see the frequency of the mass decrease. 3. All masses (even a person!) generate their own gravitational fields. 4. There is a point between two masses where the gravitational field is zero. 5. A mass requires a gravitational field only in space. 6. Two astronauts initially at rest in space will be accelerated towards each other since there is a gravitational force between the two.
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1.) In what way(s) is Einstein's general theory of relativity superior to Newton's theory of universal gravitation? For each way, give an example of a case where Einstein's theory provides a more accurate description of physical phenomena than does Newton's. (Select all that apply.) A.) Newton's theory originally held that the orbit of a spherical object about another will be an open curve for which the point of closest approach slowly precesses. Einstein's theory correctly predicts that gravitational forces lead to orbits of closed ellipses. B.) Einstein's theory correctly predicts the deflection of light passing near a massive object, while Newton's theory predicts a deflection that is one-half the observed deflection. C.) Einstein's theory correctly predicts that the orbit of a spherical object about another will be an open curve for which the point of closest approach slowly precesses. Newton's theory originally held that gravitational forces lead to orbits of closed…
a) i) Distinguish between inertial and non-inertial frames of reference.Outline a method that you can use to enable you to distinguish them. ii) Assess the reliability of the results you obtained in the first-hand investigation outlined in part (i) b) Comment on the statement "a theory is useless unless it has supporting evidence"
3 Recently, astronomers have observed stars and other objects that orbit the center of the Milky Way Galaxy farther out than our Sun, but move around faster than we do. How do astronomers think such an observation can be explained? J C all these faster-moving objects must be escaping from the gravity of the Milky Way and will soon be lost to our Galaxy it is the Sun that is moving too slowly because of a collision billions of years ago; the outer objects are really moving at the appropriate speed for their distance from the center Othere must be a great deal of invisible dark matter outside the orbit of the Sun whose gravitational pull explains the faster motions we see out there each of the faster-moving outer objects must be the result of a supernova explosion (giving them extra speed) O no one can come up with any explanation for this puzzling observation F3 $ 4 R F 1 H F4 V Search DII % 5 T F5 G -0- ^ 6 B F6 Y H -- F7 & 7 U N PrtScn F8 J * 8 Home | F9 M ( 9 K End F10 O PgUp L
You are in a spaceship with no windows, radios, or other means to check outside. How would you determine if the spaceship is at rest or moving at constant velocity? a) By determining the apparent velocity of light in the spaceship b) By checking your precision watch. If it's running slow, then the ship is moving. c) By measuring the lengths of objects. in the spaceship. If they are shorter, then the ship is moving. d) By measuring your weight on a scale located in the spaceship. If you have gained mass, then the ship is moving. e) You should give up because you've taken on a impossible task.