College Physics
7th Edition
ISBN: 9780321601834
Author: Jerry D. Wilson, Anthony J. Buffa, Bo Lou
Publisher: Addison-Wesley
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Chapter 2, Problem 4CQ
To determine
Whether the magnitude of the average speed and average velocity are same.
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The leg bone (femur) breaks under a compressive force of about 6.50 × 104 N for a human and 12.3 × 104 N for a horse.
The human femur has a compressive strength of 160 MPa, whereas the horse femur has a compressive strength of 140
MPa.
What is the effective cross-sectional area of the femur in a horse? (Note: Since the center of the femur contains bone marrow, which
has essentially no compressive strength, the effective cross-sectional area is about 80% of the total cross-sectional area.)
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A block of mass m₁ = 1.85 kg and a block of mass m₂
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=
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5.90 kg are connected by a massless string over a pulley in the shape of a solid disk having a mass of M = 10.0 kg. The fixed, wedge-shaped ramp makes an angle of 0 = 30.0° as shown in the figure. The coefficient of kinetic friction
(a) Determine the acceleration of the two blocks. (Enter the magnitude of the acceleration.)
x m/s²
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right of the pulley
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Chapter 2 Solutions
College Physics
Ch. 2 - Prob. 1MCQCh. 2 - Prob. 2MCQCh. 2 - Prob. 3MCQCh. 2 - Prob. 4MCQCh. 2 - Distance is to displacement as (a) centimeters is...Ch. 2 - Prob. 6MCQCh. 2 - Prob. 7MCQCh. 2 - A negative acceleration can cause (a) an increase...Ch. 2 - Prob. 9MCQCh. 2 - Prob. 10MCQ
Ch. 2 - Prob. 11MCQCh. 2 - A car accelerates from 80 km/h to 90 km/h, while a...Ch. 2 - Prob. 13MCQCh. 2 - For a constant linear acceleration, the...Ch. 2 - Prob. 15MCQCh. 2 - An object is thrown vertically upward. Which of...Ch. 2 - Prob. 17MCQCh. 2 - Prob. 18MCQCh. 2 - Prob. 19MCQCh. 2 - Prob. 20MCQCh. 2 - Prob. 1CQCh. 2 - Prob. 2CQCh. 2 - Prob. 3CQCh. 2 - Prob. 4CQCh. 2 - Prob. 5CQCh. 2 - Prob. 6CQCh. 2 - Prob. 7CQCh. 2 - Prob. 8CQCh. 2 - Prob. 9CQCh. 2 - Prob. 10CQCh. 2 - Car A is in a straight-line distance d from a...Ch. 2 - Prob. 12CQCh. 2 - Prob. 13CQCh. 2 - How many variables must be known to solve a...Ch. 2 - Prob. 15CQCh. 2 - Prob. 16CQCh. 2 - Prob. 17CQCh. 2 - Prob. 18CQCh. 2 - Prob. 19CQCh. 2 - Prob. 20CQCh. 2 - What is the magnitude of the displacement of a car...Ch. 2 - Prob. 2ECh. 2 - Prob. 3ECh. 2 - Prob. 4ECh. 2 - Prob. 5ECh. 2 - Prob. 6ECh. 2 - Prob. 7ECh. 2 - Prob. 8ECh. 2 - The interstate distance between two cities is 150...Ch. 2 - A race car travels a complete lap on a circular...Ch. 2 -
A student runs 30 m east, 40 m north, and 50 m...Ch. 2 - A student throws a ball vertically upward such...Ch. 2 - An insect crawls along the edge of a rectangular...Ch. 2 - A plot of position versus time is shown in Fig....Ch. 2 - A high school kicker makes a 30.0-yd field goal...Ch. 2 - Prob. 17ECh. 2 - Prob. 18ECh. 2 - Short hair grows at a rate of about 2.0 cm/month....Ch. 2 - A student driving home for the holidays starts at...Ch. 2 - Prob. 21ECh. 2 - Prob. 22ECh. 2 - An automobile traveling at 15.0 km/h along a...Ch. 2 - Prob. 24ECh. 2 - Prob. 25ECh. 2 - Prob. 26ECh. 2 - Prob. 27ECh. 2 - During liftoff, a hot-air balloon accelerates...Ch. 2 - A new-car owner wants to show a friend how fast...Ch. 2 - After landing, a jetliner on a straight runway...Ch. 2 - A train on a straight, level track has an initial...Ch. 2 - A hockey puck sliding along the ice to the left...Ch. 2 - What is the acceleration for each graph segment in...Ch. 2 - Figure 2.24 shows a plot of velocity versus time...Ch. 2 - Prob. 35ECh. 2 - A train normally travels at a uniform speed of 72...Ch. 2 - Prob. 37ECh. 2 - A car accelerates from rest at a constant rate of...Ch. 2 - A car traveling at 25 mi/h is to stop on a...Ch. 2 - A motorboat traveling on a straight course slows...Ch. 2 -
The driver of a pickup truck going 100 km/h...Ch. 2 - A roller coaster car traveling at a constant speed...Ch. 2 - A rocket car is traveling at a constant speed of...Ch. 2 - Two identical cars capable of accelerating at 3.00...Ch. 2 - According to Newton’s laws of motion (which will...Ch. 2 - An object moves in the +x-direction at a speed of...Ch. 2 - A rifle bullet with a muzzle speed of 330 m/s is...Ch. 2 - The speed limit in a school zone is 40 km/h (about...Ch. 2 - Assuming a reaction time of 0.50 s for the driver...Ch. 2 - Prob. 50ECh. 2 - Prob. 51ECh. 2 - An object initially at rest experiences an...Ch. 2 - Prob. 53ECh. 2 - An object initially at rest experiences an...Ch. 2 - Prob. 55ECh. 2 - Prob. 56ECh. 2 - A car accelerates horizontally from rest on a...Ch. 2 - An automobile is traveling on a long, straight...Ch. 2 - A student drops a ball from the top of a tall...Ch. 2 - Prob. 60ECh. 2 - Prob. 61ECh. 2 - You can perform a popular trick by dropping a...Ch. 2 - Prob. 63ECh. 2 - A boy throws a stone straight upward with an...Ch. 2 - In Exercise 64, what would be the maximum height...Ch. 2 -
The Petronas Twin Towers in Malaysia and the...Ch. 2 - In an air bag test, a car traveling at 100 km/h is...Ch. 2 -
You throw a stone vertically upward with an...Ch. 2 - A Super Ball is dropped from a height of 4.00 m....Ch. 2 - In Fig. 2.25, a student at a window on the second...Ch. 2 -
A photographer in a helicopter ascending...Ch. 2 - The acceleration due to gravity on the Moon is...Ch. 2 - It takes 0.210 s for a dropped object to pass a...Ch. 2 - Prob. 74ECh. 2 - Prob. 75ECh. 2 - Prob. 76ECh. 2 - A car and a motorcycle start from rest at the same...Ch. 2 - Prob. 78ECh. 2 - Prob. 79ECh. 2 - Prob. 80ECh. 2 - Prob. 81ECh. 2 - Prob. 82ECh. 2 - Prob. 83ECh. 2 - Prob. 84ECh. 2 - Prob. 85ECh. 2 - Prob. 86ECh. 2 - Prob. 87ECh. 2 - A Superball is dropped from a height of 2.5 m and...
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