help 7. Two disk magnets are arranged at rest on a fricitonless horizontal surface as shown in thediagram below. When the string holding them together is cut, they move apart under amagnetic force of repulsion. When the 1.0-kilogram disk reaches a speed of 3.0 metersper second, what is the speed of the 0.5-kilogram disk?String1.0 kg0.5 kg(1) 1.0 m/s(2) 1.5 m/s(3) 3.0 m/s(4) 6.0 m/s8. What is the momentum of a 1.5 × 10³-kilogram car as it travels at 30. meters per seconddue east for 60. seconds?(1) 4.5 x 10ʻ kg•m/s, east(3) 2.7 × 10° kg•m, east(2) 4.5 × 10ʻkg•m/s, west(4) 2.7 x 10° kg•m, west9. A net force of 12 newtons acting north on an object for 4.0 seconds will produce animpulse of:-(1) 48 kg-m/s north(3) 3.0 kg-m/s north(2) 48 kg-m/s south(4) 3.0 kg-m/s south10. A force of 10. newtons acts on an object for 0.010 second. What force, acting on theobject for 0.050 second, would produce the same impulse?(1) 1.0 newton(2) 2.0 newtons(3) 5.0 newtons(4) 10. newtons11. A 2-kilogram object traveling 10 meters per second north has a perfect elastic collisionwith a 5-kilogram object traveling 4 meters per second south. What is the totalmomentum after collision?(1) 0 kg-m/s(2) 20 kg-m/s north (3) 20 kg-m/s south (4) 40 kg-m/s east12. A 1.0-kilogram mass changes speed from 2.0 meters per second to 5.0 meters persecond. The change in the object's momentum is(1) 9.0 kg-m/s(2) 21 kg-m/s(3) 3.0 kg-m/s(4) 29 kg-m/s13. A 15-newton force acts on an object in a direction due east for 3.0 seconds. What will bethe change in momentum of the object?(1) 45 kg-m/s due east(3) 5.0 kg-m/s east(2) 45 kg-m/s west(4) 0.20 kg-m/s west

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Two disk magnets are arranged at rest on a fricitonless horizontal surface as shown in the diagram below. When the string holding them together is cut, they move apart under a magnetic force of repulsion. When the 1.0-kilogram disk reaches a speed of 3.0 meters per second, what is the speed of the 0.5-kilogram disk? String 1.0 kg 0.5 kg (1) 1.0 m/s (2) 1.5 m/s (3) 3.0 m/s (4) 6.0 m/s 10 maters per second

Two disk magnets are arranged at rest on a fricitonless horizontal surface as shown in the diagram below. When the string holding them together is cut, they move apart under a magnetic force of repulsion. When the 1.0-kilogram disk reaches a speed of 3.0 meters per second, what is the speed of the 0.5-kilogram disk? String 1.0 kg 0.5 kg (1) 1.0 m/s (2) 1.5 m/s (3) 3.0 m/s (4) 6.0 m/s 10 maters per second

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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