35 If the mass of one of two particles is doubled and the distance between their centers is doubled, the magnitude of the force of attraction of one particle for the other particle is (1) halved (2) doubled (3) quartered (4) unchanged
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- Describe a situation in which the net external force on a system is not zero, yet its speed remains constant.Professional Application During a visit to the International Space Station, an astronaut was positioned motionless in the center of the station, out of reach of any solid object on which he could exert a force. Suggest a method by which he could move himself away from this position, and explain the physics involved.Two identical isolated particles, each of mass 2.00 kg, are separated by a distance of 30.0 cm. What is the magnitude of the gravitational force exerted by one particle on the other?
- a 1,000.0-kg particle is placed at the origin. A 5,000.00-kg particle is placed on the x-axis at the 1.0 mm mark. where should a 2,000.0-kg particle be placed on the x-axis for it to experience zero net gravitational force?A 60.0-kg astronaut is in space, far from any objects that would exert a significant gravitational force on him. He would like to move toward his spaceship, but his jet pack is not functioning. He throws a 0.720-kg socket wrench with a velocity of 5.00 m/s in a direction away from the ship. After 0.500 s, he throws a 0.800-kg spanner in the same direction with a speed of 8.00 m/s. After another 9.90 s, he throws a mallet with a speed of 6.00 m/s in the same direction. The mallet has a mass of 1.20 kg. How fast is the astronaut moving after he throws the mallet?(assume all speeds are relative to the spaceship).Objects with masses of 300 kg and a 600 kg are separated by 0.380 m. At what position (other than infinitely remote ones) can the 49.0 kg object be placed so as to experience a net force of zero?
- 25. Two objects of unequal mass are dropped from the same height near the surface of the earth. Which of the following is the same for both objects just before they hit the surface? (Ignore friction.) A. velocity B. net force C. momentum D. kinetic energyA cruise ship with a mass of 1.1 × 107 kg strikes a pier at a speed of 0.95 m/s. It comes to rest 6.2 m later, damaging the ship, the pier, and the tugboat captain’s finances. 1) Calculate the average force, in newtons, exerted on the pier. Take the motion of the cruise ship to be in the positive direction.5-Two objects are attracted to each other by a forcegravitational F. If one mass doubles and the other tripleswithout changing the distance, what is the new forcegravitational between the objects in terms of F? (taketo m as the mass of the earth)A. 4 F B. 9 F C. 6 F D. 1/9 F E. 1/6 F with process
- Consider the gravitational attraction between the Earth and the Moon. Which pulls harder: the Earth on the Moon, or the Moon on the Earth, or are they the same? Explain.At a time when mining asteroids has become feasible, astronauts have connected a line between their 3070-kg space tug and a 5580-kg asteroid. They pull on the asteroid with a force of 307 N. Initially the tug and the asteroid are at rest, 436 m apart. How much time does it take for the ship and the asteroid to meet?2. A rocketship of mass mR = 2000 kg tows an asteroid full of valuable minerals with a mass mA = 500kg with a rope (space rope, or something). The two are out in the far reaches of space, so thegravitational force from the Earth and other planets can be ignored.The asteroid is under the influence of the force of tension from the rope. The rocket is also underthe influence of the rope’s force, and it’s also being thrust forward by the force of its engine. Therocket and asteroid both have an acceleration of 0.5 m/s2 (a) What is the strength of the force of the tension in the rope? (b) What is the strength of the engine’s force on the rocket, and in which direction does it point?