Newton's law of gravitation is an inverse square law in which the field is a vector   where little g is the magnitude of the gravitational field,  M is the mass responsible for the gravity,  R is the distance to its center from the point of interest, and the little unit vector   points toward the mass M from the point.  Big G is Newton's constant of gravitation. When you know the gravitational field, how do you find the force on a mass m located at that point?       The force is        The force is a vector   with a minus sign because it is attracting toward M     The force is the same as the vector field, that is       The force is the mass being attracted times the field of the source of gravity, or

Which of the following statements are fundamental postulates of the special theory of relativity? More than one statement may be correct. (a) Light moves through a substance called the ether. (b) The speed of light depends on the inertial reference frame in which it is measured. (c) The laws of physics depend on the inertial reference frame in which they are used. (d) The laws of physics are the same in all inertial reference frames. (e) The speed of light is independent of the inertial reference frame in which it is measured.

A ball of mass m is found to have a weight Wx on Planet X. Which of the following is a correct expression for the gravitational field strength of Planet X?     The gravitational field strength of Planet X is mg.     The gravitational field strength of Planet X is Wx/m.     The gravitational field strength of Planet X is 9.8  N/kg.     The gravitational field strength of Planet X is mWx.

Sphere A with mass 80 kg is located at the origin of an xy coordinate system; sphere B with mass 60 kg is located at coordinates (0.25 m, 0); sphere C with mass 0.20 kg is located in the first quadrant 0.20 m from A and 0.15 m from B. In unit-vector notation, what is the gravitational force on Cdue to AandB?

One correct comparison between the electrostatic force and the gravitational force is that (a) gravitational force is greater than the electrostatic force (b) the gravitational force increases with the increasing distance between two masses (c) gravitational force is always attractive (d) the electrostatic force is always repulsive

Which of the following statements about gravitational force, Fg , is not correct? a. Gravitational force is an attractive force only; it is never repulsive. b. Gravitational forces always exist in pairs of equal magnitude. c. The gravitational force between two objects depends on their separation. d. Gravitational force is the strongest of the fundamental forces.

Rank the magnitudes of the following gravitational forces from largest to smallest. If two forces are equal,show their equality in your list. (5 points)a. the force exerted by a 2-kg object on a 3-kg object 1 m awayb. the force exerted by a 2-kg object on a 9-kg object 1 m awayc. the force exerted by a 2-kg object on a 9-kg object 2 m awayd. the force exerted by a 9-kg object on a 2-kg object 2 m awaye. the force exerted by a 4-kg object on another 4-kg object 2 m away

Which of the following correctly describes the law of universal gravitation by isaac newton? a.) the magnitude of force of attraction between two bodies is directly proportional to the square of the distance between them b.) the magnitude of the force of gravity relies only on the masses of the two interacting objects c.) the universal gravitational constant has a magnitude equal to 9.8 m/s^2 d.) multiplying the masses with the distance between them results to the maximum magnitude of force   Aristotle: Ptolemy; _____: Copernicus a.) Hippocrates b.) Heracles c.) Aristarchus d.) Thales

A ball of mass m is found to have a weight Wx on Planet X. Which of the following is a correct expression for the gravitational field strength of Planet X? AThe gravitational field strength of Planet X is mg. BThe gravitational field strength of Planet X is Wx/m. CThe gravitational field strength of Planet X is 9.8  N/kg9.8  N⁢/kg. DThe gravitational field strength of Planet X is mWx.

Astronomers are constantly discovering new planets orbiting nearby stars. In the following scenarios, compare the gravitational force between the planet and its star to the gravitational force between the Earth and the Sun and enter your result as a decimal with no units. (For instance, if the gravitational force between the planet and the star is 1/4 the gravitational force between the Earth and the Sun, enter 0.250)A planet that has a mass 8.98 times that of the Earth is orbiting a star that has the same mass as the Sun. The planet orbits at an average distance of 1.00 AU. How does the gravitational force between this planet and its star compare to the force between the Sun and the Earth? A planet that has a mass equal to that of the Earth is orbiting a star that has the same mass as the Sun. The planet orbits at an average distance of 1.95 AU. How does the gravitational force between this planet and its star compare to the force between the Sun and the Earth?   Tries 0/5   A…