10th Edition

ISBN: 9780321902788

Author: Hugh D. Young, Philip W. Adams, Raymond Joseph Chastain

Publisher: PEARSON

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Chapter 8, Problem 77PP

Momentum and the archerfish. Archerfish are tropical fish that hunt by shooting drops of water from their mouths at insects above the water’s surface to knock them into the water, where the fish can eat them. A 65 g fish at rest just on the water’s surface can expel a 0.30 g drop of water in a short burst of 5.0 ms. High-speed measurements show that the water has a speed of 2.5 m/s just after the archerfish expels it.

77. What is the average force the fish exerts on the drop of water?

A. 0.00015 N
B. 0.00075 N
C. 0.075 N
D. 0.15 N

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Chapter 8, Problem 76PP

Chapter 8, Problem 78PP

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Chapter 8 Solutions

College Physics (10th Edition)

Ch. 8 - The objects shown in Figure 8.31 move together....Ch. 8 - Gliders A and B are headed directly toward each...Ch. 8 - Example 8.3 and some of the problems in this...Ch. 8 - Is the momentum of a satellite in a circular orbit...Ch. 8 - Prob. 5CQ Ch. 8 - A woman stands in the middle of a perfectly...Ch. 8 - (a) If the momentum of a single object is equal to...Ch. 8 - (a) When a large car collides with a small car,...Ch. 8 - When rain falls from the sky, what becomes of the...Ch. 8 - In a zero-gravity environment, can a...

Ch. 8 - A machine gun is fired at a steel plate. Is the...Ch. 8 - At the highest point in its parabolic trajectory,...Ch. 8 - A small car collides head-on with a large SUV....Ch. 8 - In which of the following collisions would you...Ch. 8 - A rifle of mass M is initially at rest, but is...Ch. 8 - Two carts, one twice as heavy as the other, are at...Ch. 8 - Two masses, M and 5M, are at rest on a horizontal...Ch. 8 - A glider airplane is coasting horizontally when a...Ch. 8 - Which of the following statements is true for an...Ch. 8 - Which of the following statements is true for an...Ch. 8 - Cart A, of mass 1 kg, is initially moving to the...Ch. 8 - Two lumps of day having equal masses and speeds,...Ch. 8 - A heavy rifle initially at rest fires a light...Ch. 8 - You drop an egg from rest with no air resistance....Ch. 8 - For each case in Figure 8.33, the system consists...Ch. 8 - For each case in Figure 8.34, the system consists...Ch. 8 - Three objects A, B, and C are moving as shown in...Ch. 8 - A 2646 lb car is moving on the freeway at 68 mph....Ch. 8 - The speed of the fastest-pitched baseball was 45...Ch. 8 - Cart A has a mass of 5 kg and is moving in the +x...Ch. 8 - The magnitude of the momentum of a cat is . 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The mass of a regulation tennis ball...Ch. 8 - To warm up for a match, a tennis player hits the...Ch. 8 - A 150 g baseball is hit toward the left by a bat....Ch. 8 - Your little sister (mass 25.0 kg) is sitting in...Ch. 8 - A 270 caliber hunting rifle fires an 8.5 g bullet,...Ch. 8 - Calculate the location of the center of mass of...Ch. 8 - Prob. 42P Ch. 8 - Three odd-shaped blocks of chocolate have the...Ch. 8 - A 2 kg stone is dropped from a 50-m-tall building....Ch. 8 - Prob. 45P Ch. 8 - A 1200 kg station wagon is moving along a straight...Ch. 8 - Walking in a boat. A 45.0 kg woman stands up in a...Ch. 8 - A small rocket burns 0.0500 kg of fuel per second,...Ch. 8 - A rocket is fired in deep space, where gravity is...Ch. 8 - A rocket is fired in deep space, where gravity is...Ch. 8 - A 70 kg astronaut floating in space in a 110 kg...Ch. 8 - In 1.00 second an automatic paintball gun can fire...Ch. 8 - In a volcanic eruption, a 2400-kg boulder is...Ch. 8 - A 0.4 kg stone is thrown horizontally at a speed...Ch. 8 - A stone with a mass of 0.100 kg rests on a...Ch. 8 - A steel ball with a mass of 40.0 g is dropped from...Ch. 8 - A movie stuntman (mass 80.0 kg) stands on a window...Ch. 8 - Tennis, anyone? Tennis players sometimes leap into...Ch. 8 - A mass m is placed at the rim of a frictionless...Ch. 8 - Two identical 1.50 kg masses are pressed against...Ch. 8 - A rifle bullet with mass 8.00 g strikes and embeds...Ch. 8 - A 5.00 g bullet traveling horizontally at 450 m/s...Ch. 8 - The objects in Figure 8.49 are constructed of...Ch. 8 - Changing mass. A railroad hopper car filled with...Ch. 8 - Forensic science. Forensic scientists can measure...Ch. 8 - A 2.0 kg steel sphere is hanging from a hook by a...Ch. 8 - A blue puck with mass 0.0400 kg, sliding with a...Ch. 8 - The structure of the atom. During 19101911, Sir...Ch. 8 - Rocket failure! Just as it has reached an upward...Ch. 8 - In a common physics demonstration, two identical...Ch. 8 - A 7.0 kg shell at rest explodes Into two...Ch. 8 - A 15.0 g acorn falls from rest from the top of a...Ch. 8 - Accident analysts. A 1500 kg sedan goes through a...Ch. 8 - A block of clay is suspended as part of a...Ch. 8 - Momentum and the archerfish. Archerfish are...Ch. 8 - Momentum and the archerfish. Archerfish are...Ch. 8 - Momentum and the archerfish. Archerfish are...Ch. 8 - BIO Momentum and the archerfish. Archerfish are...

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