Physics 30S Final Exam Review-2.pdf

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Physics 40S RRSD Final Exam – June 2005 Page 1436. A 1.000 × 10 -kilogram empty cart moving with a speed of 6.0 meters persecond is about to collide with a stationary loaded cart having a total mass of35.000× 10 kilograms, as shown. After the collision, the carts lock and movetogether. [Assume friction is negligible.]a) Calculate the speed of the combined carts after the collision. Show allwork, including the equation and substitution with units. [2]b) Calculate the kinetic energy of the combined carts after the collision.Show all work, including the equation and substitution with units. [1]Long Answer – Fields (13)7. Identify two issues pertaining to the pursuit of space exploration and brieflydiscuss each. [2]
Physics 40S RRSD Final Exam – June 2005 Page 158. If the gravitational force between two objects of equal mass is 2.30× 10 −8 Nwhen the objects are 10.0 m apart, what is the mass of each object? [3]9. At what distance from the Earth’s surface is the gravitational field strength 7.33N/kg? [3]10. An electron passes through a magnetic field at right angles to the field. Thestrength of the magnetic field is 3.9× 10 −2 T and the force on the electron is1.5× 10 −14 N. What is the speed of the electron? [2]
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Physics 30S Final Exam Review-2.pdf

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