Physics (5th Edition)
5th Edition
ISBN: 9780321976444
Author: James S. Walker
Publisher: PEARSON
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Textbook Question
Chapter 5, Problem 3CQ
As you read this, you are most likely sitting quietly in a chair. Can you conclude, therefore, that you are at rest? Explain.
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Passage Problems
Laptop computers are equipped with accelerometers that sense when
the device is dropped and then put the hard drive into a protective mode.
Your computer geek friend has written a program that reads the accel-
erometer and calculates the laptop's apparent weight. You're amusing
yourself with this program on a long plane flight. Your laptop weighs
just 5 pounds, and for a long time that's what the program reports. But
then the "Fasten Seatbelt" light comes on as the plane encounters turbu-
lence. Figure 4.27 shows the readings for the laptop's apparent weight
over a 12-second interval that includes the start of the turbulence.
76. At the first sign of turbulence,
the plane's acceleration
a. is upward.
b. is downward.
c. is impossible to tell from
the graph.
77. The plane's vertical ac-
celeration has its greatest
magnitude
a. during interval B.
b. during interval C.
c. during interval D.
78. During interval C, you can
conclude for certain that the
plane is
Apparent…
If the metal sphere on the Van de Graff has a charge of 0.14 Coulombs and the person has a mass of 62 kg, how much excess charge would the person need in order to levitate at a distance 25 cm from the center of the charged metal sphere? Assume you can treat both the person and the metal sphere as point charges a distance 25 cm from each other
If the metal sphere on the Van de Graff has a charge of 0.14 Coulombs and the person has a mass of 62 kg, how much excess charge would the person need in order to levitate at a distance 25 cm from the center of the charged metal sphere? Assume you can treat both the person and the metal sphere as point charges a distance 25 cm from each other (so that you can use Coulomb's Law to calculate the electrical force).
Chapter 5 Solutions
Physics (5th Edition)
Ch. 5.1 - Two forces have magnitudes F1 and F2. If these...Ch. 5.2 - Which of the following statements is correct? A: A...Ch. 5.3 - The acceleration of an object has a magnitude a....Ch. 5.4 - A force F pushes on three boxes that slide without...Ch. 5.5 - An object is acted on by a single force that is at...Ch. 5.6 - When a certain person steps onto a scale on solid...Ch. 5.7 - Figure 5-23 shows four identical bricks that are...Ch. 5 - Driving down the road, you hit the brakes...Ch. 5 - Youve probably seen pictures of someone pulling a...Ch. 5 - As you read this, you are most likely sitting...
Ch. 5 - When a dog gets wet, it shakes its body from head...Ch. 5 - A young girl slides down a rope. As she slides...Ch. 5 - A block of mass m hangs from a string attached to...Ch. 5 - An astronaut on a space walk discovers that his...Ch. 5 - Two untethered astronauts on a space walk decide...Ch. 5 - In Figure 5-25 Wilbur asks Mr. Ed, the talking...Ch. 5 - A whole brick has more mass than half a brick,...Ch. 5 - The force exerted by gravity on a whole brick is...Ch. 5 - Is it possible for an object at rest to have only...Ch. 5 - Is it possible for an object to be in motion and...Ch. 5 - A bird cage, with a parrot inside, hangs from a...Ch. 5 - Suppose you jump from the cliffs of Acapulco and...Ch. 5 - A friend tells you that since his car is at rest,...Ch. 5 - Since all objects are weightless in orbit, how is...Ch. 5 - To clean a rug, you can hang it from a clothesline...Ch. 5 - If you step off a high board and drop to the water...Ch. 5 - Is it possible for an object to be moving in one...Ch. 5 - Since a bucket of water is weightless in space,...Ch. 5 - In the movie The Rocketeer, a teenager discovers a...Ch. 5 - List three common objects that have a weight of...Ch. 5 - An object of mass m is initially at rest. After a...Ch. 5 - On a planet far, far away, an astronaut picks up a...Ch. 5 - In a grocery store, you push a 15.4-kg shopping...Ch. 5 - You are pulling your little sister on her sled...Ch. 5 - A 0.53-kg billiard ball initially at rest is given...Ch. 5 - A 92-kg water skier floating in a lake is pulled...Ch. 5 - A 0.5-kg object is acted on by a force whose x...Ch. 5 - Predict/Explain You drop two balls of equal...Ch. 5 - Predict/Calculate A 42.0-kg parachutist is moving...Ch. 5 - Predict/Calculate In baseball, a pitcher can...Ch. 5 - A major-league catcher gloves a 92 mi/h pitch and...Ch. 5 - Driving home from school one day, you spot a ball...Ch. 5 - Stopping a 747 A 747 jetliner lands and begins to...Ch. 5 - The Ux-versus-time graph for a 1.8-kg object is...Ch. 5 - Predict/Calculate A drag racer crosses the finish...Ch. 5 - Predict/Explain A small car collides with a large...Ch. 5 - Predict/Explain A small car collides with a large...Ch. 5 - As you catch a 0.14-kg ball it accelerates at...Ch. 5 - BIO Woodpecker Concussion Prevention A woodpecker...Ch. 5 - On vacation, your 1400-kg car pulls a 560-kg...Ch. 5 - Predict/Calculate An 85-kg parent and a ?4-kg...Ch. 5 - A force of magnitude 7.50 N pushes three boxes...Ch. 5 - A force of magnitude 7.50 N pushes three boxes...Ch. 5 - Predict/Calculate Two boxes sit side-by-side on a...Ch. 5 - A skateboarder on a ramp is accelerated by a...Ch. 5 - Three objects, A, B, and C, have x and y...Ch. 5 - A farm tractor tows a 3300-kg trailer up a 14...Ch. 5 - A shopper pushes a 7 5-kg shopping cart up a 13...Ch. 5 - Two crewmen pull a rail through a lock, as shown...Ch. 5 - A hockey puck is acted on by one or more forces as...Ch. 5 - To give a 19-kg child a ride, two teenagers pull...Ch. 5 - Predict/Calculate A 65-kg skier speeds down a...Ch. 5 - An object acted on by three forces moves with...Ch. 5 - A train is traveling up a 2 88 incline at a speed...Ch. 5 - The Force Exerted on the Moon In Figure 5-37 we...Ch. 5 - You pull upward on a stuffed suitcase with a force...Ch. 5 - BIO Brain Growth A newborn babys brain grows...Ch. 5 - Suppose a rocket launches with an acceleration of...Ch. 5 - During an episode of turbulence in an airplane you...Ch. 5 - At the bow of a ship on a stormy sea, a crewman...Ch. 5 - Predict/Calculate As part of a physics experiment...Ch. 5 - When you weigh yourself on good old terra firma...Ch. 5 - Predict/Calculate BIO Flight of the Samara A...Ch. 5 - When you lift a bowling ball with a force of 82 N,...Ch. 5 - A 23-kg suitcase is pulled with constant speed by...Ch. 5 - (a) Draw a free-body diagram for the skier in...Ch. 5 - A 9.3-kg child sits in a 3.7-kg high chair. (a)...Ch. 5 - Figure 5-39 shows the normal force N experienced...Ch. 5 - Figure 5-40 shows the normal force N as a function...Ch. 5 - A 5.0-kg bag of potatoes sits on the bottom of a...Ch. 5 - Predict/Calculate (a) Find the normal force...Ch. 5 - Predict/Calculate A gardener mows a lawn with an...Ch. 5 - Figure 5-41 Problems 53 53 An ant walks slowly...Ch. 5 - CE Predict/Explain Riding in an elevator moving...Ch. 5 - CE Predict/Explain Riding in an elevator moving...Ch. 5 - CE Give the direction of the net force acting on...Ch. 5 - CE Predict/Explain You jump out of an airplane and...Ch. 5 - In a tennis serve, a 0.070-kg ball can be...Ch. 5 - BIO Human Heart Force The left ventricle of the...Ch. 5 - A 51 5-kg swimmer with an initial speed of 1.25...Ch. 5 - The ax-versus-time graph for a 2.0-kg object is...Ch. 5 - A skateboarder starts from rest and rolls down a...Ch. 5 - The rotors of a 15,200-kg heavy-lift helicopter...Ch. 5 - As it pulls itself up to a branch, a chimpanzee...Ch. 5 - CE Each of the three identical hockey pucks shown...Ch. 5 - Predict/Calculate The VASIMR Rocket NASA plans to...Ch. 5 - An object of mass m = 5.95 kg has an acceleration...Ch. 5 - At the local grocery store, you push a 14.5-kg...Ch. 5 - BIO Predict/Calculate The Force of Running...Ch. 5 - BIO Predict/Calculate Grasshopper Liftoff To...Ch. 5 - Takeoff from an Aircraft Carrier On an aircraft...Ch. 5 - The Ux-versus-time graph for a 1.8-kg object is...Ch. 5 - Predict/Calculate An archer shoots a 0.024-kg...Ch. 5 - An apple of mass m = 0.13 kg falls out of a tree...Ch. 5 - BIO The Fall of T. rex Paleontologists estimate...Ch. 5 - Deep Space 1 The NASA spacecraft Deep Space 1 was...Ch. 5 - Your groceries are in a bag with paper handles....Ch. 5 - BIO A Leafhopper's Leap The motion of jumping...Ch. 5 - Predict/Calculate At the airport, you observe some...Ch. 5 - Prob. 80GPCh. 5 - Two boxes are at rest on a smooth, horizontal...Ch. 5 - You have been hired to help improve the material...Ch. 5 - Prob. 83GPCh. 5 - A baseball of mass m and initial speed U strikes a...Ch. 5 - When two people push in the same direction on an...Ch. 5 - An air-track cart of mass m1 = 0.14 kg is moving...Ch. 5 - BIO Increasing Safety in a Collision Safety...Ch. 5 - BIO Increasing Safety in a Collision Safety...Ch. 5 - BIO Increasing Safety in a Collision Safety...Ch. 5 - BIO Increasing Safety in a Collision Safety...Ch. 5 - Predict/Calculate Referring to Example 5-8 Suppose...Ch. 5 - Referring to Example 5-8 Suppose the force of 30.0...Ch. 5 - Predict/Calculate Referring to Figure 5-13 Suppose...Ch. 5 - Predict/Calculate Referring to Figure 5-13 Suppose...
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