EBK INQUIRY INTO PHYSICS
8th Edition
ISBN: 8220103599450
Author: Ostdiek
Publisher: Cengage Learning US
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Chapter 3, Problem 30Q
To determine
Whether a satellite`s speed decreases without its
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A ball is tied to one end of a string. The other end of the string is fixed. The ball is set in motion around a vertical circle without friction. At the top of the circle, the ball has a speed of ; = √√ Rg, as shown in the figure. At what angle should the string be cut so that the ball will travel
through the center of the circle?
The path
after string
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R
(a) A luggage carousel at an airport has the form of a section of a large cone, steadily rotating about its vertical axis. Its metallic
surface slopes downward toward the outside, making an angle of 24.5° with the horizontal. A 30.0-kg piece of luggage is placed on
the carousel, 7.46 m from the axis of rotation. The travel bag goes around once in 37.5 s. Calculate the magnitude of the force of
static friction between the bag and the carousel.
Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. N
(b) The drive motor is shifted to turn the carousel at a higher constant rate of rotation, and the piece of luggage is bumped to a
position 7.94 m from the axis of rotation. The bag is on the verge of slipping as it goes around once every 30.5 s. Calculate the
coefficient of static friction between the bag and the carousel.
Your response differs significantly from the correct answer. Rework your solution from the…
(a) Imagine that a space probe could be fired as a projectile from the Earth's surface with an initial speed of 5.78 x 104 m/s relative
to the Sun. What would its speed be when it is very far from the Earth (in m/s)? Ignore atmospheric friction, the effects of other
planets, and the rotation of the Earth. (Consider the mass of the Sun in your calculations.)
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. m/s
(b) What If? The speed provided in part (a) is very difficult to achieve technologically. Often, Jupiter is used as a "gravitational
slingshot" to increase the speed of a probe to the escape speed from the solar system, which is 1.85 x 104 m/s from a point on
Jupiter's orbit around the Sun (if Jupiter is not nearby). If the probe is launched from the Earth's surface at a speed of
4.10 x 10 m/s relative…
Chapter 3 Solutions
EBK INQUIRY INTO PHYSICS
Ch. 3 - Distinguish between what a physicist and a...Ch. 3 - If the population in a certain country was...Ch. 3 - Describe the basic features of the “lighthouse”...Ch. 3 - Prob. 2AACh. 3 - Prob. 1PIPCh. 3 - Prob. 1MIOCh. 3 - Repeat Exercise I for Section 3.2 on linear...Ch. 3 - (Indicates a review question, which means it...Ch. 3 - (Indicates a review question, which means it...Ch. 3 - (Indicates a review question, which means it...
Ch. 3 - (Indicates a review question, which means it...Ch. 3 - (Indicates a review question, which means it...Ch. 3 - (Indicates a review question, which means it...Ch. 3 - (Indicates a review question, which means it...Ch. 3 - Prob. 8QCh. 3 - (Indicates a review question, which means it...Ch. 3 - Prob. 10QCh. 3 - (Indicates a review question, which means it...Ch. 3 - Prob. 12QCh. 3 - (Indicates a review question, which means it...Ch. 3 - (Indicates a review question, which means it...Ch. 3 - (Indicates a review question, which means it...Ch. 3 - Prob. 16QCh. 3 - Prob. 17QCh. 3 - (Indicates a review question, which means it...Ch. 3 - (Indicates a review question, which means it...Ch. 3 - (Indicates a review question, which means it...Ch. 3 - Prob. 21QCh. 3 - (Indicates a review question, which means it...Ch. 3 - (Indicates a review question, which means it...Ch. 3 - (Indicates a review question, which means it...Ch. 3 - Prob. 25QCh. 3 - (Indicates a review question, which means it...Ch. 3 - (Indicates a review question, which means it...Ch. 3 - Prob. 28QCh. 3 - (Indicates a review question, which means it...Ch. 3 - Prob. 30QCh. 3 - Prob. 31QCh. 3 - Prob. 32QCh. 3 - (Indicates a review question, which means it...Ch. 3 - Prob. 34QCh. 3 - (¦ Indicates a review question, which means it...Ch. 3 - A sprinter with a mass of 65 kg reaches a speed of...Ch. 3 - Which has the larger linear momentum: a 2,000-kg...Ch. 3 - In Section 2.4, we computed the force needed to...Ch. 3 - A runner with a mass of 80 kg accelerates from 0...Ch. 3 - In Section 1.4, we considered the collision of a...Ch. 3 - A basketball with a mass of 0.62 kg falls...Ch. 3 - A pitcher throws a 0.5-kg ball of clay at a 6-kg...Ch. 3 - A 3,000-kg truck runs into the rear of a 1,000-kg...Ch. 3 - A 50-kg boy on roller skates moves with a speed of...Ch. 3 - . Two persons on ice skates stand face to face and...Ch. 3 - . A loaded gun is dropped on a frozen lake. The...Ch. 3 - . A running back with a mass of 80 kg and a speed...Ch. 3 - . A motorist runs out of gas on a level road 200 m...Ch. 3 - . In Figure 3.10, the rock weighs 100 lb and is...Ch. 3 - . A weight lifter raises a 100-kg barbell to a...Ch. 3 - Prob. 16PCh. 3 - . A personal watercraft and rider have a combined...Ch. 3 - As it orbits Earth, the 11,000-kg Hubble Space...Ch. 3 - . The kinetic energy of a motorcycle and rider is...Ch. 3 - . In compressing the spring in a toy dart gun,...Ch. 3 - . An archer using a simple bow exerts a force of...Ch. 3 - A worker at the top of a 629-m-tall television...Ch. 3 - . A 25-kg child uses a pogo stick to bounce up and...Ch. 3 - . A student drops a water balloon out of a dorm...Ch. 3 - . A child on a swing has a speed of 7.7 m/s at the...Ch. 3 - . The cliff divers at Acapulco, Mexico, jump off a...Ch. 3 - . At NASA's Zero Gravity Research Facility in...Ch. 3 - . The fastest that a human has run is about 12...Ch. 3 - . A bicycle and rider going 10 m/s approach a...Ch. 3 - . In January 2003, an 18-year-old student gained a...Ch. 3 - The ceiling of an arena is 20 m above the floor....Ch. 3 - . Compute how much kinetic energy was “lost” in...Ch. 3 - Compute how much kinetic energy was “lost” in the...Ch. 3 - . A 1,000-W motor powers a hoist used to lift cars...Ch. 3 - . How long does it take a worker producing 200 W...Ch. 3 - . An elevator is able to raise 1,000 kg to a...Ch. 3 - . A particular hydraulic pile driver uses a ram...Ch. 3 - . A compact car can climb a hill in 10 s. The top...Ch. 3 - . In the annual Empire State Building race,...Ch. 3 - . It takes 100 minutes for a middle-aged physics...Ch. 3 - . Two small 0.25-kg masses are attached to...Ch. 3 - Rank the following three collisions in terms of...Ch. 3 - A bullet with a mass of 0.01 kg is tired...Ch. 3 - In a head-on, inelastic collision, a 4,000-kg...Ch. 3 - Prob. 4CCh. 3 - Prob. 5CCh. 3 - The "shot" used in the shot-put event is a metal...Ch. 3 - Prob. 7CCh. 3 - Prob. 8CCh. 3 - A series of five 0.1-kg spheres are arrayed along...
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