29/03/2020 Gravitational Fields(Senior Class Physics Study by Topics) 0Comments by Gate Academy Welcome to your Gravitational Fields(Senior Class Physics Study by Topics) NAME EMAIL PHONE NUMBER 1. The amount of matter in an object AccelerationGravityWeightMass2. A 5.000 kg crate is accelerated from 5.000 m/s to 10.00 m/s. What is the amount of work needed to accelerate the crate, to the nearest tenth of a joule?18.951.895187.576.53. How does acceleration of an object change in relation to its mass? Inversely proportional.Directly proportional.Acceleration doesn't depend on mass at all.4. Radar works by sending out radio signals. The reflected signals are measured and analyzed to determine some of the characteristics of the object that reflected the signals. One type of radar emits radio signals having a wavelength of 1.5 meters. What is the frequency of these signals? 3.0 x 10^8 HZ2.5 x 10^8 HZ2.0 x 10^8 HZ1.5 x 10^8 HZ5. Which law states every action force has an equal and opposite reaction force?Newtons 3rd lawNewtons 2nd lawNewtons 1st lawNewtons 4th law6. Which one of the following is true ? Gravitational force is directly proportional to masses of two bodiesGravitational force is indirectly proportional to masses of two objectNoneGravitational force is directly proportional to square of distance between two bodies7. Which of the following statements best describes the motion of air molecules that transmit sound waves? The air molecules oscillate parallel to the direction of propagation and remain in the same general position.The air molecules oscillate parallel to the direction of propagation and move along with the wave.The air molecules oscillate perpendicular to the direction of propagation while remaining in the same general position.The air molecules oscillate perpendicular to the direction of propagation while moving along with the wave.8. The Earth is closer to the sun in January than in July, which accounts for the fact that the highest high tides in the northern hemisphere occur inSpring.Particular time because tides do not depend on seasons.Winter.Summer.9. 342110. Describe the lines of equipotential near to a large mass. Lines are concentric and spaced further apart from each other as they move away from the centre of the mass.Lines move radially away from the centre of the massnone of the aboveLines are concentric and spaced equidistant from each other11. Using a diffraction grating, a student looks at an incandescent lightbulb and a hydrogen-gas–discharge tube. Why does the student see fewer colors from the hydrogen-gas–discharge tube than from the incandescent lightbulb?Only certain electron transitions are possible in a hydrogen atom.Hydrogen gas changes in the presence of light.Hydrogen gas is invisible and does not reflect light.Hydrogen atoms contain only one electron.12. According to Newton's Law of Universal Gravitation, which of the following do you NOT need to know in order to calculate the force of gravitational attraction between 2 objects?Distance between the two objectsMass of the smaller objectRadius of the larger objectMass of the larger object13. The reason the moon does not crash into the Earth is that the Moon has a sufficient tangential speed.Gravitational pull of other planets keeps the moon up.Earth's gravitational field is weak at the moon.Moon has less mass than the Earth.14. The origin of any micro tides in the human body is most likely theEarthSunMoon15. Some of the work done on the cart became the cart’s potential energy, and some of the work was converted into heat by friction.The cart had no kinetic energy at the top of the ramp because all the work done on the cart was converted into heat by friction.The work done on the cart was equally divided between the cart’s potential and kinetic energy.All the work done on the cart was transformed into the cart’s potential energy.16. How is the gravitational field strength related to the gravitational potential? Gravitational field strength = gravitational potentialGravitational field strength = gravitational potential gradientGravitational field strength = gravitational potential energy17. Two objects move toward each other because of gravity. As the objects get closer and closer, the force between them Decreases, then increases.Increases, then decreases.Increases.Decreases.18. The planet Jupiter is about 300 times as massive as Earth, yet on its surface you would weigh only about 3 times as much. This is because Jupiter is significantly farther from the sun.Your mass is 100 times less on Jupiter.Jupiter's radius is 10 times the Earth's radius.You are 100 times more weightless there19. The main reason ocean tides exist is that the pull of the moon And the sun on the oceans are in opposite directionsIs greater on the Earth because the moon is closer to Earth.Is greater on oceans closer to the moon and less on oceans farther from the moon.And sun are in conjunction at high tides and in opposition at low tides.20. What happens to the gravitational force between you and your neighbour if the distance between you doubles? NothingForce becomes smaller by a factor of 2Force becomes 2x as greatForce becomes smaller by a factor of 421. Suppose the moon had twice as much mass as it now does and still orbited the Earth at the same distance. In that case, the ocean bulges on Earth would beUnequal in size.Smaller.Not significantly different.Larger.22. If the distance between two objects is doubled, what happens to the force of gravitational attraction between them? It doublesIt stays the sameIt is cut in halfIt is 1/4 as strong23. According to Newton, doubling the distance between two interacting objectsDivides by 4 the gravitational force between them.Multiplies by 2 the gravitational force between them.Divides by 2 the gravitational force between them.Multiplies by 4 the gravitational force between them.24. The amount of gravitational force that acts on the space shuttle while in orbit isNearly zero.The same as the shuttle's weight on the Earth's surface.Almost as much as the shuttle's weight on the Earth's surface.25. What is the net force on an object that has a 45 N force and a 10N force acting int he same direction?55N10N35N45N26 out of 25Time is Up!