Solutions for MODIFIED MASTERING COLLEGE PHYSICS 18WK.
Problem 1CQ:
The batter in a baseball game hits a home run. As he circles the bases, is his angular velocity...Problem 2CQ:
Viewed from somewhere in space above the north pole, would a point on the earths equator have a...Problem 3CQ:
Figure Q7.3 shows four pulleys, each with a heavy and a light block strung over it. The blocks'...Problem 4CQ:
If you are using a wrench to loosen a very stubborn nut, you can make the job easier by using a...Problem 8CQ:
A screwdriver with a very thick handle requires less force to operate than one with a very skinny...Problem 9CQ:
If you have ever driven a truck, you likely found that it had a steering wheel with a larger...Problem 10CQ:
A student gives a steady push to a ball at the end of a massless, rigid rod for 1 s, causing the...Problem 12CQ:
If you grasp a hammer by its lightweight handle and wave it back and forth, and then grasp it by its...Problem 16CQ:
The moment of inertia of a uniform rod about an axis through its center is ML2/12. The moment of...Problem 18CQ:
With care, its possible to walk on top of a barrel as it rolls. It is much easier to do this if the...Problem 19MCQ:
A nut needs to be tightened with a wrench. Which force shown in Figure Q7.17 will apply the greatest...Problem 24MCQ:
A typical compact disk has a mass of 15 g and a diameter of 120 mm. What is its moment of inertia...Problem 25MCQ:
Two horizontal rods are each held up by vertical strings tied to their ends. Rod 1 has length L and...Problem 27MCQ:
Questions 25 through 27 concern a classic figure-skating jump called the axel. A skater starts the...Problem 28MCQ:
Questions 25 through 27 concern a classic figure-skating jump called the axel. A skater starts the...Problem 29MCQ:
Questions 25 through 27 concern a classic figure-skating jump called the axel. A skater starts the...Problem 1P:
What is the angular position in radians of the minute hand of a clock at (a) 5:00, (b) 7:1 5, and...Problem 2P:
A child on a merry-go-round takes 3.0 s to go around once. What is his angular displacement during a...Problem 4P:
An old-fashioned vinyl record rotates on a turntable at 45 rpm. What are (a) the angular speed in...Problem 5P:
The earths radius is about 4000 miles. Kampala, the capital of Uganda, and Singapore are both nearly...Problem 7P:
A turntable rotates counterclockwise at 78 rpm. A speck of dust on the turntable is at = 0.45 rad...Problem 11P:
The 1.00-cm-long second hand on a watch rotates smoothly. a. What is its angular velocity? b. What...Problem 12P:
The earths radius is 6.37 106 m; it rotates once every 24 hours. a. What is the earths angular...Problem 13P:
To throw a discus, the thrower holds it with a fully outstretched arm. Star1ing from rest, he begins...Problem 15P:
A computer hard disk starts from rest, then speeds up with an angular acceleration of 190 rad/s2...Problem 17P:
The crankshaft in a race car goes from rest to 3000 rpm in 2.0 s. a. What is the crankshafts angular...Problem 18P:
Reconsider the situation in Example 7.10. If Luis pulls straight down on the end of a wrench that is...Problem 22P:
The tune-up specifications of a car call for the spark plugs to be tightened to a torque of 38 N m....Problem 23P:
In Figure P7.22, force F2, acts half as far from the pivot as F1, What magnitude ofF2, causes the...Problem 24P:
A professors office door is 0.91 m wide, 2.0 m high, and 4.0 cm thick; has a mass of 25 kg; and...Problem 25P:
What is the net torque on the bar shown in Figure P7.24, about the axis indicated by the dot? Figure...Problem 29P:
What is the net torque on the bar shown in Figure P7.26, about the axis indicated by the dot? Figure...Problem 31P:
The 2.0 kg, uniform, horizontal rod in Figure P7.31 is seen from the side. What is the gravitational...Problem 32P:
A 4.00-m-long, 500 kg steel beam extends horizontally from the point where it has been bolted to the...Problem 33P:
An athlete at the gym holds a 3.0 kg steel ball in his hand. His arm is 70 cm long and has a mass of...Problem 34P:
The 2.0-m-long, 15 kg beam in Figure P7.34 is hinged at its left end. It is falling (rotating...Problem 36P:
Hold your arm outstretched so that it is horizontal. Estimate the mass of your arm and the position...Problem 39P:
A regulation table tennis ball is a thin spherical shell 40 mm in diameter with a mass of 2.7 g....Problem 41P:
A solid cylinder with a radius of 4.0 cm has the same mass as a solid sphere of radius R. If the...Problem 43P:
A bicycle rim has a diameter of 0.65 m and a moment of inertia, measured about its center, of 0.19...Problem 45P:
A small grinding wheel has a moment of inertia of 4.0 105 kg m2 What net torque must be applied to...Problem 47P:
An objects moment of inertia is 2.0 kg m2. Its angular velocity is increasing at the rate of 4.0...Problem 49P:
A 200 g, 20-cm-diameter plastic disk is spun on an axle through its center by an electric motor....Problem 51P:
A frictionless pulley, which can be modeled as a 0.80 kg solid cylinder with a 0.30 m radius, has a...Problem 53P:
If you lift the front wheel of a poorly maintained bicycle off the ground and then start it spinning...Problem 55P:
A toy top with a spool of diameter 5.0 cm has a moment of inertia of 3.0|multins| 105 kg m2 about...Problem 57P:
A bicycle with 0.80-m-diameter tires is coasting on a level road at 5.6 m/s. A small blue dot has...Problem 62GP:
The grap in Figure P7.56 shows the angular velocity of the crankshaft in a car. Draw a graph of the...Problem 63GP:
A car with 58-cm-diameter tires accelerates uniformly from rest to 20m/s in 10 s. How many times...Problem 64GP:
The cable lifting an elevator is wrapped around a 1.0-m- diameter cylinder that is turned by the...Problem 65GP:
The 20-cm-diameter disk in Figure P7.59 can rotate on an axle through its center. What is the net...Problem 66GP:
A combination lock has a 1.0-cm-diameter knob that is part of the dial you turn to unlock the lock....Problem 67GP:
A 70 kg mans arm, including the hand, can be modeled as a 75-cm-long uniform cylinder with a mass of...Problem 69GP:
A reasonable estimate of the moment of inertia of an ice skater spinning with her arms at her sides...Problem 71GP:
The ropes in Figure P7.65 are each wrapped around a cylinder, and the two cylinders are fastened...Problem 73GP:
Flywheels are large, massive wheels used to store energy. They can be spun up slowly, then the...Problem 75GP:
A 1.0 kg ball and a 2.0 kg ball are connected by a 1.0-m-long rigid, massless rod. The rod and balls...Problem 77GP:
A tradesman sharpens a knife by pushing it with a constant force against the rim of a grindstone....Problem 78MSPP:
MCAT-Style Passage Problems The Bunchberry The bunchberry flower has the fastest-moving parts ever...Problem 79MSPP:
The Bunchberry The bunchberry flower has the fastest-moving parts ever seen in a plant. Initially,...Browse All Chapters of This Textbook
Chapter 1 - Representing MotionChapter 2 - Motion In One DimensionChapter 3 - Vectors And Motion In Two DimensionsChapter 4 - Forces And Newton's Laws Of MotionChapter 5 - Applying Newton's LawsChapter 6 - Circular Motion, Orbits, And GravityChapter 7 - Rotational MotionChapter 8 - Equilibrium And ElasticityChapter 9 - MomentumChapter 10 - Energy And Work
Chapter 11 - Using EnergyChapter 12 - Thermal Properties Of MatterChapter 13 - FluidsChapter 14 - OscillationsChapter 15 - Traveling Waves And SoundChapter 16 - Superposition And Standing WavesChapter 17 - Wave OpticsChapter 18 - Ray OpticsChapter 19 - Optical InstrumentsChapter 20 - Electric Fields And ForcesChapter 21 - Electric PotentialChapter 22 - Current And ResistanceChapter 23 - CircuitsChapter 24 - Magnetic Fields And ForcesChapter 25 - Em Induction And Em WavesChapter 26 - Ac ElectricityChapter 27 - RelativityChapter 28 - Quantum PhysicsChapter 29 - Atoms And MoleculesChapter 30 - Nuclear PhysicsChapter P.1 - Summary Force And MotionChapter P.2 - Summary Conservation LawsChapter P.3 - Summary Properties Of MatterChapter P.4 - Summary Oscillations And WavesChapter P.5 - Summary OpticsChapter P.6 - Summary Electricity And MagnetismChapter P.7 - Summary Modern Physics
Sample Solutions for this Textbook
We offer sample solutions for MODIFIED MASTERING COLLEGE PHYSICS 18WK. homework problems. See examples below:
Chapter 1, Problem 1CQChapter 2, Problem 1CQChapter 3, Problem 1CQChapter 4, Problem 1CQChapter 5, Problem 1CQChapter 5, Problem 19PChapter 6, Problem 1CQChapter 7, Problem 1CQGiven data: Refer to the Figure Q8.1 in the textbook for the force that acts at the tip of the rod....
Given data: A person bowls with a 10 pound ball. The person throws the ball with a speed of 10 mph....Chapter 10, Problem 1CQChapter 11, Problem 1CQChapter 12, Problem 1CQChapter 13, Problem 1CQGiven data: Pendulum is pulled back from its position by 10°, and its restoring force is 1.0 N....Chapter 15, Problem 1CQChapter 16, Problem 1CQChapter 17, Problem 1CQExplanation: During the solar eclipse, the moon comes in between the sun and the Earth. The rays...Chapter 19, Problem 1CQChapter 20, Problem 1CQChapter 21, Problem 1CQGiven data: Refer to the Figure Q22.2 in the textbook for required data. Explanation: In the Figure...Refer to FIGURE Q23.1 in the textbook. Consider I is the total current in the circuit, R is the...Chapter 24, Problem 1CQFormula used: Consider the equation for induced current. I=εR (1) Here, ε is the emf due to motion...Chapter 26, Problem 1CQExplanation: If the case considered is that the airplane is moving with a constant velocity such...Given info: The photon energy of an x-ray beam is increasing. Explanation: Write the expression for...Explanation: Emission spectrum of the elements shows colors due to the electrons excited by...Explanation: Consider the expression for atomic mass. A=Z+N Here, Z is the number of protons and N...
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