College Physics: A Strategic Approach (4th Edition)
4th Edition
ISBN: 9780134704180
Author: Knight
Publisher: PEARSON
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Chapter 27, Problem 34P
You’re standing on an asteroid when you see your best friend rocketing by in her new spaceship. As she goes by, you notice that the front and rear of her ship coincide exactly with the 400-m-diameter of another nearby asteroid that is stationary with respect to you. However, you happen to know that your friend’s spaceship measured 500 m long in the showroom. What is your friend’s speed relative to you?
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You’re standing on an asteroid when you see your best friend rocketing by in her new spaceship. As she goes by, you notice that the front and rear of her ship coincide exactly with the 400-m-diameter of another nearby asteroid that is stationary with respect to you. However, you happen to know that your friend’s spaceship measured 500 m long in the showroom. What is your friend’s speed relative to you?
You encounter a moving walkway that is 75 mm long and has a speed of 1.9 m/sm/s relative to the ground.How long would it take you to cover the 75 mm length of the walkway if, once you get on the walkway, you turn around and start walking in the opposite direction with a speed of 1.4m/s relative to the walkway?
You plan to take a trip to the moon. Since you do not have a traditional spaceship with rockets, you will need to leave the earth with enough speed to make it to the moon. Some information that will help during this problem:
mearth = 5.9742 x 1024 kgrearth = 6.3781 x 106 mmmoon = 7.36 x 1022 kgrmoon = 1.7374 x 106 mdearth to moon = 3.844 x 108 m (center to center)G = 6.67428 x 10-11 N-m2/kg2
1)
On your first attempt you leave the surface of the earth at v = 5534 m/s. How far from the center of the earth will you get?
2)
Since that is not far enough, you consult a friend who calculates (correctly) the minimum speed needed as vmin = 11068 m/s. If you leave the surface of the earth at this speed, how fast will you be moving at the surface of the moon? Hint carefully write out an expression for the potential and kinetic energy of the ship on the surface of earth, and on the surface of moon. Be sure to include the gravitational potential energy of the earth even when the ship is…
Chapter 27 Solutions
College Physics: A Strategic Approach (4th Edition)
Ch. 27 - Prob. 1CQCh. 27 - Frame S moves relative to frame S as shown in...Ch. 27 - a. Two balls move as shown in Figure Q27.3. What...Ch. 27 - A lighthouse beacon alerts ships to the danger of...Ch. 27 - As a racket passes the earth at 0.75c, it fires a...Ch. 27 - At the instant that a clock standing next to you...Ch. 27 - Prob. 8CQCh. 27 - Firecrackers 1 and 2 are 600 m apart. You are...Ch. 27 - Your clocks and calendars are synchronized with...Ch. 27 - Two trees are 600 m apart. You are standing...
Ch. 27 - Prob. 12CQCh. 27 - In Figure Q27.12, clocks C1 and C2, in frame S are...Ch. 27 - Prob. 14CQCh. 27 - Prob. 15CQCh. 27 - Prob. 16CQCh. 27 - Prob. 17CQCh. 27 - The rocket speeds shown in Figure Q27.18 are...Ch. 27 - Can a particle of mass m have total energy less...Ch. 27 - In your chemistry classes, you have probably...Ch. 27 - Lee and Leigh are twins. At their first birthday...Ch. 27 - A space cowboy wants to eject from his spacecraft...Ch. 27 - Prob. 23MCQCh. 27 - Prob. 24MCQCh. 27 - A particle moving at speed 0.40c has momentum p0....Ch. 27 - A particle moving at speed 0.40c has kinetic...Ch. 27 - A sprinter crosses the finish line of a race. The...Ch. 27 - A baseball pitcher can throw a ball with a speed...Ch. 27 - A boy on a skateboard coasts along at 5 m/s. He...Ch. 27 - A boat takes 3.0 hours to travel 30 km down a...Ch. 27 - When the moving sidewalk at the airport is broken,...Ch. 27 - Prob. 6PCh. 27 - An out-of-control alien spacecraft is diving into...Ch. 27 - Prob. 8PCh. 27 - A starship blasts past the earth at 2.0 103 m/s....Ch. 27 - You are flying at 0.99c with respect to Kara. At...Ch. 27 - Prob. 11PCh. 27 - Bianca is standing at x = 600 m. Firecracker 1, at...Ch. 27 - You are standing at x = 9.0 km Lightning bolt 1...Ch. 27 - A light flashes at position x = 0 m. One...Ch. 27 - Jose is baking to the east. Lightning bolt 1...Ch. 27 - Your 1000-m-long starship has warning lights at...Ch. 27 - There is a lightbulb exactly halfway between the...Ch. 27 - Prob. 18PCh. 27 - A cosmic ray travels 60 km through the earths...Ch. 27 - Prob. 20PCh. 27 - At what speed relative to a laboratory does a...Ch. 27 - Prob. 22PCh. 27 - Prob. 23PCh. 27 - An astronaut travels to a star system 4.5 ly away...Ch. 27 - A subatomic particle moves through the laboratory...Ch. 27 - At what speed as a fraction of c, will a moving...Ch. 27 - Jill claims that her new rocket is 100 m long. As...Ch. 27 - Prob. 28PCh. 27 - A muon travels 60 km through the atmosphere at a...Ch. 27 - Prob. 30PCh. 27 - The Stanford Linear Accelerator (SLAC) accelerates...Ch. 27 - Our Milky Way galaxy is 100,000 ly in diameter. A...Ch. 27 - The X-15 rocket-powered plane holds the record for...Ch. 27 - Youre standing on an asteroid when you see your...Ch. 27 - A rocket cruising past earth at 0.800c shoots a...Ch. 27 - Prob. 36PCh. 27 - A base on Planet X fires a missile toward an...Ch. 27 - Prob. 38PCh. 27 - Prob. 39PCh. 27 - Prob. 40PCh. 27 - Prob. 41PCh. 27 - Prob. 42PCh. 27 - What are the kinetic energy, the rest energy, and...Ch. 27 - Prob. 44PCh. 27 - A quarter-pound hamburger with all the fixings has...Ch. 27 - Prob. 46PCh. 27 - How fast much an electron move so that its total...Ch. 27 - Prob. 48PCh. 27 - At what speed is a particle's kinetic energy twice...Ch. 27 - Prob. 50PCh. 27 - Prob. 51PCh. 27 - Prob. 52PCh. 27 - The chemical energy of gasoline is 46 MJ/kg. If...Ch. 27 - A standard nuclear power plant generates 3.0 GW of...Ch. 27 - A firecracker explodes at x = 0 m, t = 0 s. A...Ch. 27 - Prob. 56GPCh. 27 - Prob. 57GPCh. 27 - A very fast-moving train car passes you, moving to...Ch. 27 - A spaceship heads directly toward an asteroid at a...Ch. 27 - Prob. 60GPCh. 27 - Prob. 61GPCh. 27 - Prob. 62GPCh. 27 - A spaceship flies past an experimenter who...Ch. 27 - Marissas spaceship approaches Josephs at a speed...Ch. 27 - At a speed of 0.90c, a spaceship travels to a star...Ch. 27 - Prob. 66GPCh. 27 - A rocket traveling at 0.500c sets out for the...Ch. 27 - A distant quasar is found to be moving away from...Ch. 27 - A space beacon on Planet Karma emits a pulse of...Ch. 27 - Two rockets, A and B, approach the earth from...Ch. 27 - Prob. 71GPCh. 27 - What is the speed of an electron after being...Ch. 27 - What is the speed of a proton after being...Ch. 27 - Prob. 74GPCh. 27 - What is the total energy, in MeV, of a. A proton...Ch. 27 - Prob. 76GPCh. 27 - The sun radiates energy at the rate 3.8 1026 W....Ch. 27 - The radioactive element radium (Ra) decays by a...Ch. 27 - Prob. 79GPCh. 27 - Prob. 80GPCh. 27 - MCAT-Style Passage Problems Pion Therapy Subatomic...Ch. 27 - MCAT-Style Passage Problems Pion Therapy Subatomic...Ch. 27 - MCAT-Style Passage Problems Pion Therapy Subatomic...Ch. 27 - MCAT-Style Passage Problems Pion Therapy Subatomic...
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