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Physics, please solve question 6

Physics, please solve question 6

College Physics
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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Physics, please solve question 6

Q.1: A ball is fired from the top of a 40 m tall building, If the ball is fired with an initial velocity of 10 m/s that makes an angle 30° above the horizontal direction. How far horizontally from the base of the building will the ball hit the ground: A. 9.8 m В. 18.3 m C. 45.5 m D. 35.7 m Q.2: Three masses are in contact with each other and lie on a smooth horizontal surface, as shown in the adjacent figure. If M, = 10 kg, M2 = 20 kg, M3 = 20 kg, and the force F = 150 N. The magnitude (in N) of the contact force between M, and M, is: E. 29.5 m %3! %3D A. 20 В. 120 E. 100 C. 60 M, M2 M, D. 80 Q.3: True or False: "The action and reaction forces are always equal in magnitude, apposite in direction and act on different bodies". A. True B. False Q.4: A 1-kg particle is attached to the end of a rope (J). It rotates in a vertical circle of radius 1 m. When the particle is at the lowest point (bottom) of the circle, its speed is 15 m/s. The tension (in N) in the rope at this point is: В. 83.2 C. 234.8 D. 25.7 E. 109.8 A. 95.6 Q.5: A force F = (3i +4j) N acts on a particle that moves from the origin to the point (2,1,3) m. %3D The work (in Joules) done on the particle by this force during this displacement is: C. 25 E. Zero D. 10 Q.6: True or False:"The work done by any nonconservative force through any closed path is always zero". A. True A. 16 В. 18 B. False
Transcribed Image Text:Q.1: A ball is fired from the top of a 40 m tall building, If the ball is fired with an initial velocity of 10 m/s that makes an angle 30° above the horizontal direction. How far horizontally from the base of the building will the ball hit the ground: A. 9.8 m В. 18.3 m C. 45.5 m D. 35.7 m Q.2: Three masses are in contact with each other and lie on a smooth horizontal surface, as shown in the adjacent figure. If M, = 10 kg, M2 = 20 kg, M3 = 20 kg, and the force F = 150 N. The magnitude (in N) of the contact force between M, and M, is: E. 29.5 m %3! %3D A. 20 В. 120 E. 100 C. 60 M, M2 M, D. 80 Q.3: True or False: "The action and reaction forces are always equal in magnitude, apposite in direction and act on different bodies". A. True B. False Q.4: A 1-kg particle is attached to the end of a rope (J). It rotates in a vertical circle of radius 1 m. When the particle is at the lowest point (bottom) of the circle, its speed is 15 m/s. The tension (in N) in the rope at this point is: В. 83.2 C. 234.8 D. 25.7 E. 109.8 A. 95.6 Q.5: A force F = (3i +4j) N acts on a particle that moves from the origin to the point (2,1,3) m. %3D The work (in Joules) done on the particle by this force during this displacement is: C. 25 E. Zero D. 10 Q.6: True or False:"The work done by any nonconservative force through any closed path is always zero". A. True A. 16 В. 18 B. False
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