Answered: A person places a book on the roof of a…

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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1- A person places a book on the roof of a car and drives off without remembering to remove it. As the book and the car move down a street at a steady speed, two horizontal forces are acting on together the book. What are they? 2- A women on a train while watching the display on her GPS unit. She notices that both the “spend” and the “direction “readings are not changing. What can the she conclude about the net force acting on the train car? 3- At least two forces are action you right now. What are these forces? Describe the relationship between the size and direction of these two forces. 4- the Sun’s mass is very much larger the moon’s, yet the tides on Earth produced by the sun are much lower than those caused by the Moov. Why? 5- what is the weight of 1130kg in Newton’s? 6- As 2-kg ball rolls down a ramp, the net force on it is 10 N. What is the acceleration? 8- in an experiment performed in a space station, a force of 60 N causes an object to have an acceleration equal to 4 m/s square. What is the object’s mass? 8- A sprinter with a mass of 80 kg accelerates uniformly from 0 m/s to 9 m/s in 3 s. a- what is the runner’s acceleration? b- what is the net force on the runner ? c- how far does the sprinter travel during the 3 s? 9- At the end of an amusement park ride, it is desirable to bring a gondola to a stop without having the acceleration exceed 2 g. If the total mass of the gondola and it occupants is 2000 kg, what is the maximum allowed braking force? 10- under certain conditions, the human body can safely withstand an acceleration of 10 g. What net force would have to act on someone with mass of 50 kg to cause this acceleration? 11- A centripetal force of 200 N acts on 1000-kg satellite moving with a speed of 5,000 m/s in circular orbit around a planet. What is the radius of its orbit? 12- A 200-kg communications satellite is placed into a circular orbit around Earth with a radius of 4.23x10power 7 m ( 26,300 miles) a- find the gravitational force on the satellite. b- use the equation for centripetal force to compute the speed of the satellite. Thank you,

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