5th Edition

ISBN: 9780134296074

Author: GIANCOLI

Publisher: VST

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Chapter 7, Problem 34P

Chapter 7, Problem 36P

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An outfielder throws a baseball to his catcher in an attempt to throw out a runner at home plate. The ball bounces once before reaching the catcher. Assume the angle at which the bounced ball leaves the ground is the same as the angle at which the outfielder threw it as shown in the figure, but that the ball's speed after the bounce is one-half of what it was before the bounce. 8 (a) Assuming the ball is always thrown with the same initial speed, at what angle & should the fielder throw the ball to make it go the same distance D with one bounce (blue path) as a ball thrown upward at 35.0° with no bounce (green path)? 24 (b) Determine the ratio of the time interval for the one-bounce throw to the flight time for the no-bounce throw. Cone-bounce no-bounce 0.940

A rocket is launched at an angle of 60.0° above the horizontal with an initial speed of 97 m/s. The rocket moves for 3.00 s along its initial line of motion with an acceleration of 28.0 m/s². At this time, its engines fail and the rocket proceeds to move as a projectile. (a) Find the maximum altitude reached by the rocket. 1445.46 Your response differs from the correct answer by more than 10%. Double check your calculations. m (b) Find its total time of flight. 36.16 x Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. s (c) Find its horizontal range. 1753.12 × Your response differs from the correct answer by more than 10%. Double check your calculations. m

Race car driver is cruising down the street at a constant speed of 28.9 m/s (~65 mph; he has a “lead” foot) when the traffic light in front of him turns red. a) If the driver’s reaction time is 160 ms, how far does he and his car travel down the road from the instant he sees the light change to the instant he begins to slow down? b) If the driver’s combined reaction and movement time is 750 ms, how far do he and his car travel down the road from the instant he sees the light change to the instant he slams on her brakes and car begins to slow down? Please answer parts a-B. Show all work. For each question draw a diagram to show the vector/s. Show all the step and provide units in the answers. Provide answer to 2 decimal places. DONT FORGET TO DRAW VECTORS! ONLY USE BASIC FORMULAS TAUGHT IN PHYSICS. distance = speed * time.

Chapter 7 Solutions

EBK PHYSICS FOR SCIENTISTS & ENGINEERS

Ch. 7.1 - A box is dragged a distance d across a floor by a...Ch. 7.1 - Return to the Chapter-Opening Question, page 163,...Ch. 7.4 - (a) Make a guess: will the work needed to...Ch. 7.4 - Can kinetic energy ever be negative?Ch. 7.4 - Prob. 1EE Ch. 7 - In what ways is the word work as used in everyday...Ch. 7 - A woman swimming upstream is not moving with...Ch. 7 - Can a centripetal force ever do work on an object?...Ch. 7 - Why is it tiring to push hard against a solid wall...Ch. 7 - Does the scalar product of two vectors depend on...

Ch. 7 - Can a dot product ever he negative? If yes, under...Ch. 7 - Prob. 7Q Ch. 7 - Does the dot product of two vectors have direction...Ch. 7 - Can the normal force on an object ever do work?...Ch. 7 - You have two springs that are identical except...Ch. 7 - Prob. 11Q Ch. 7 - In Example 710, it was stated that the block...Ch. 7 - Does the net work done on a particle depend on the...Ch. 7 - Prob. 2MCQ Ch. 7 - Prob. 3MCQ Ch. 7 - Prob. 5MCQ Ch. 7 - Prob. 7MCQ Ch. 7 - Prob. 8MCQ Ch. 7 - Prob. 9MCQ Ch. 7 - Prob. 10MCQ Ch. 7 - Prob. 12MCQ Ch. 7 - Prob. 13MCQ Ch. 7 - Prob. 14MCQ Ch. 7 - (I) How much work is done by the gravitational...Ch. 7 - (I) How high will a 1.85-kg rock go if thrown...Ch. 7 - (I) A 75.0-kg firefighter climbs a flight of...Ch. 7 - (I) A hammerhead with a mass of 2.0 kg is allowed...Ch. 7 - Prob. 5P Ch. 7 - Prob. 6P Ch. 7 - Prob. 7P Ch. 7 - Prob. 8P Ch. 7 - (II) Estimate the work you do to mow a lawn 10 m...Ch. 7 - Prob. 10P Ch. 7 - (II) A lever such as that shown in Fig. 720 can be...Ch. 7 - Prob. 12P Ch. 7 - Prob. 13P Ch. 7 - Prob. 14P Ch. 7 - Prob. 15P Ch. 7 - Prob. 16P Ch. 7 - Prob. 17P Ch. 7 - Prob. 18P Ch. 7 - (I) For any vector V=Vxi+Vyj+Vzk show that...Ch. 7 - Prob. 20P Ch. 7 - Prob. 21P Ch. 7 - Prob. 22P Ch. 7 - Prob. 23P Ch. 7 - (II) A constant force F=(2.0i+4.0j)N acts on an...Ch. 7 - Prob. 25P Ch. 7 - Prob. 26P Ch. 7 - (II) Show that if two nonparallel vectors have the...Ch. 7 - Prob. 28P Ch. 7 - Prob. 29P Ch. 7 - Prob. 30P Ch. 7 - Prob. 31P Ch. 7 - Prob. 32P Ch. 7 - Prob. 33P Ch. 7 - Prob. 34P Ch. 7 - Prob. 35P Ch. 7 - Prob. 36P Ch. 7 - Prob. 37P Ch. 7 - (II) If the hill in Example 72 (Fig. 74) was not...Ch. 7 - (II) The net force exerted on a particle acts in...Ch. 7 - Prob. 40P Ch. 7 - (II) The force on a particle, acting along the x...Ch. 7 - Prob. 42P Ch. 7 - Prob. 43P Ch. 7 - (II) At the top of a pole vault, and athlete...Ch. 7 - Prob. 45P Ch. 7 - Prob. 46P Ch. 7 - (II) If it requires 5.0 J of work to stretch a...Ch. 7 - (II) An object, moving along the circumference of...Ch. 7 - Prob. 49P Ch. 7 - Prob. 50P Ch. 7 - Prob. 51P Ch. 7 - Prob. 52P Ch. 7 - (III) A 3.0-m-long steel chain is stretched out...Ch. 7 - (I) At room temperature, an oxygen molecule, with...Ch. 7 - (I) (a) If the kinetic energy of a particle is...Ch. 7 - Prob. 56P Ch. 7 - Prob. 57P Ch. 7 - Prob. 58P Ch. 7 - Prob. 59P Ch. 7 - (II) An 85-g arrow is fired from a bow whose...Ch. 7 - (II) If the speed of a car is increased by 50%, by...Ch. 7 - Prob. 62P Ch. 7 - Prob. 63P Ch. 7 - Prob. 64P Ch. 7 - Prob. 65P Ch. 7 - (II) (a) How much work is done by the horizontal...Ch. 7 - Prob. 67P Ch. 7 - Prob. 68P Ch. 7 - (II) A train is moving along a track with constant...Ch. 7 - Prob. 70P Ch. 7 - Prob. 71P Ch. 7 - Prob. 72P Ch. 7 - Prob. 73P Ch. 7 - Prob. 74GP Ch. 7 - Prob. 75GP Ch. 7 - Prob. 76GP Ch. 7 - Prob. 77GP Ch. 7 - Prob. 78GP Ch. 7 - A varying force is given by F = Aekx, where x is...Ch. 7 - Prob. 80GP Ch. 7 - A force F=(10.0i+9.0j+12.0k)kNacts on a small...Ch. 7 - Prob. 82GP Ch. 7 - Prob. 83GP Ch. 7 - Prob. 84GP Ch. 7 - (III) We usually neglect the mass of a spring if...Ch. 7 - Prob. 86GP Ch. 7 - Prob. 87GP Ch. 7 - Prob. 88GP Ch. 7 - Prob. 89GP Ch. 7 - Prob. 90GP Ch. 7 - Prob. 91GP Ch. 7 - Assume a cyclist of weight mg can exert a force on...Ch. 7 - A car passenger buckles himself in with a seat...Ch. 7 - A simple pendulum consists of a small object of...Ch. 7 - Prob. 95GP Ch. 7 - A small mass m hangs at rest from a vertical rope...Ch. 7 - Prob. 97GP Ch. 7 - Prob. 98GP Ch. 7 - Stretchable ropes ate used to safely arrest the...Ch. 7 - Prob. 100GP

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Solution Summary: The author calculates the angle between the vectors connecting atoms 1 and 2, and the line joining them.

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Chapter 7 Solutions