Conceptual Physical Science 6th Edition Paul G. Hewitt, John A. Suchocki, Leslie A. Hewitt - Solutions

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A 100-kg box of tools is in the locations A, B, and C. From greatest to least, rank thea. Masses of the 100-kg box of tools. b. Weights of the 100-kg box of tools.
In the preceding question, is your approximate speed relative to the Sun as you walk down the aisle of the train changed slightly or by a lot?
What hypothesis did G. F. FitzGerald make to explain the findings of Michelson and Morley?
What classical idea about space and time did Einstein reject?
What is the same in Einstein's first postulate?
What is constant in Einstein's second postulate?
Inside the moving compartment of Figure 35.4, light travels a certain distance to the front end and a certain distance to the back end of the compartment. How do these distances compare as seen in the frame of reference of the moving rocket?
How do the distances in question 7 compare as seen in the frame of reference of an observer on a stationary planet?
How many coordinate axes are usually used to describe three-dimensional space? What does the fourth dimension measure?
Under what condition will you and a friend share the same realm of spacetime? When will you not share the same realm?
What is special about the ratio of the distance traveled by a flash of light to the time the light takes to travel this distance?
Three parachutists, A, B, and C, each have reached terminal velocity at the same distance above the ground below.a. From fastest to slowest, rank their terminal velocities. b. From longest to shortest, rank their times to reach the round.
Time is required for light to travel along a path from one point to another. If this path is seen to be longer because of motion, what happens to the time it takes for light to travel this longer path?
What do we call the "stretching out" of time?
A measuring stick placed along the circumference of a rotating disk will appear contracted, but if it is oriented along a radius, it will not? Explain.
The ratio of circumference to diameter for measured circles on a disk equals π when the disk is at rest, but not when the disk is rotating. Explain.
What effect does mass have on space time?
What occurs in the surrounding space when a massive object undergoes a change in its motion?
A star 10 light-years away explodes and produces gravitational waves. How long will it take these waves to reach Earth?
Why are gravitational waves so difficult to detect?
Does Einstein's theory of gravitation invalidate Newton's theory of gravitation? Explain.
Is Newtonian physics adequate to get a rocket to the Moon?
You exert a force on a ball when you toss it upward. How long does that force last after the ball leaves your hand?
How does Newtonian physics link with quantum theory and relativity theory?
What is different about the reference frames that apply to special relativity and to general relativity?
In a spaceship far from the reaches of gravity, under what conditions could you feel as if the spaceship were stationary on Earth's surface?
Your friend says that light passing the Sun is bent whether or not Earth experiences a solar eclipse. Do you agree or disagree, and why?
In 2004, when Mercury passed between the Sun and Earth, sunlight was not appreciably bent as it passed Mercury. Why?
Which would run slower: a clock at the center of a rotating space habitat or one at the edge? Or would there be no difference?
Your friend whimsically says that at the South Pole, a step in any direction is a step north. Do you agree?
Prudence and Charity are twins raised at the center of a rotating kingdom. Charity goes to live at the edge of the kingdom for a time and then returns home. Discuss which twin is older when they rejoin. (Ignore any time dilation effects associated with travel to and from the edge.)
What is the principal difference between the theory of special relativity and the theory of general relativity?
In a spaceship accelerating at g, far from Earth's gravity, how does the motion of a dropped ball compare with the motion of a ball dropped at Earth's surface?
On a long alley, a bowling ball slows down as it rolls. Is any horizontal force acting on the ball? How do you know?
Exactly what is equivalent in the principle of equivalence?
Compare the bending of the paths of baseballs and photons by a gravitational field?
Why must the Sun be eclipsed to measure the deflection of starlight passing near the Sun?
What is the effect of strong gravitation on measurements of time?
Which runs slower: a clock at the top of the tallest skyscraper in Chicago or a clock on the shore of Lake Michigan?
How does the frequency of a particular spectral line observed in sunlight compare with the frequency of that line observed from a source on Earth?
If we view events occurring on a star that is collapsing to become a black hole, do we see time speeding up or slowing down?
Of all the planets, why is Mercury the best candidate for finding evidence of the relationship between gravitation and space?
For what kind of gravitational field is Newton's law of gravity valid?
If a motorcycle moves with a constant velocity, can you conclude that there is no net force acting on it? How about if it's moving with constant acceleration?
Since an object weighs less on the surface of the Moon than on Earth's surface, does it have less inertia on the Moon's surface?
Clearly distinguish between science and technology.
If gold were sold by weight, would you rather buy it in Denver or in Death Valley? If it were sold by mass, which of these locations makes the best buy? Defend your answers.
In an orbiting space vehicle, you are handed two identical boxes, one filled with sand and the other filled with feathers. How can you determine which is which without opening the boxes?
Why is a massive cleaver more effective for chopping vegetables than an equally sharp knife?
When a junked car is crushed into a compact cube, does its mass change? Its weight? Explain.
What happens to the weight reading on a scale you stand on when you toss a heavy object upward?
What weight change occurs when your mass increases by 2 kg?
A crate remains at rest on a factory floor while you push on it with horizontal force F. What is the friction force exerted on the crate by the floor? Explain.
When a car is moving in reverse, backing from a driveway, the driver applies the brakes. In what direction is the car's acceleration?
The auto in the sketch moves forward as the brakes are applied. A bystander says that during the interval of braking, the auto's velocity and acceleration are in opposite directions. Do you agree or disagree?
Aristotle claimed that the speed of a falling object depends on its weight. We now know that objects in free fall, whatever the gravitational forces on them, undergo the same gain in speed. Why don't differences in their gravitational forces affect their accelerations?
Throughout the ages, what has been the general reaction to new ideas about established "truths"?
Why is physics considered to be the basic science?
When blocking in football, a defending lineman often attempts to get his body under the body of his opponent and push upward. What effect does this have on the friction force between the opposing lineman's feet and the ground?
When a coin is tossed upward, what happens to its velocity while ascending? Its acceleration? (Ignore air resistance.)
How much force acts on a tossed coin when it is halfway to its maximum height? How much force acts on it when it reaches its peak? (Ignore air resistance.)
A friend says that, as long as a car is at rest, no forces act on it. What do you say if you're in the mood to correct the statement of your friend?
A "shooting star" is usually a grain of sand from outer space that burns up and gives off light as it enters the atmosphere. What exactly causes this burning?
How does the force of gravity on a raindrop compare with the air drag the drop encounters when it falls at constant velocity?
When a parachutist opens her parachute after reaching terminal speed, in what direction does she accelerate?
Under what conditions would a metal sphere dropping through a viscous liquid be in equilibrium?
Make up two multiple-choice questions that would check a classmate's understanding of the distinction between mass and weight.
Discuss whether or not the velocity of an object can reverse direction while maintaining a constant acceleration. If so, give an example; if not, provide an explanation.
A bowling ball at rest is in equilibrium. Is the ball in equilibrium when it moves at constant speed in a straight-line path?
Discuss whether or not a stick of dynamite contains force. In your discussion make the distinction between contain and exert.
Is it possible to move in a curved path in the absence of a force? Discuss why.
An astronaut drops an overhead rock on the Moon. Discuss what force(s) act(s) on the rock as it drops.
Does a dieting person seek to lose mass or lose weight?
Consider a heavy crate resting on the bed of a flatbed truck. When the truck accelerates, the crate also accelerates and remains in place. Identify and discuss the force that accelerates the crate.
To pull a wagon across a lawn with constant velocity, you have to exert a steady force. Discuss and reconcile this fact with Newton's first law, which says that motion with constant velocity requires no force.
Sketch the path of a ball tossed vertically into the air. (Ignore air resistance.) Draw the ball halfway to the top, at the top, and halfway down to its starting point. Draw a force vector on the ball in all three positions. Are the vectors the same or different in the three locations? Are the
Discuss whether or not a falling object increases in speed when its acceleration of fall decreases.
What is the net force acting on a 1-kg ball in free fall?
What is the net force acting on a falling 1-kg ball if it encounters 2 N of air resistance?
Choose a particular day in the very near future-and during that day carry a small notebook with you and record every time you come in contact with modern technology. Then write a page or two discussing your dependencies on your list of technologies. Make a note of how you'd be affected if each
A discussion partner says that, before the falling ball in the preceding exercise reaches terminal velocity, it gains speed while its acceleration decreases. Do you agree or disagree? Defend your answer.
Is acceleration proportional to net force, or does acceleration equal net force?
When you push horizontally on a crate on a level floor that doesn't slide, how great is the force of friction on the crate?
As you increase your push, will friction on the crate increase also?
Once the crate is sliding, how hard do you push to keep it moving at constant velocity?
Which is normally greater: static friction or sliding friction on the same object?
How does the force of friction for a sliding object vary with speed?
Does fluid friction vary with speed?
Which is more fundamental: mass or weight? Which varies with location?
Fill in the blanks: Shake something to and fro and you're measuring its ________. Lift it against gravity and you're measuring its ________.
What is the penalty for scientific fraud in the science community?
Fill in the blanks: The Standard International unit for mass is the __________. The Standard International unit for force is the ________.
What is the approximate weight of a quarter-pound hamburger after it is cooked?
What is the weight of a 1-kilogram brick resting on a table?
In the string-pull illustration in Figure 4.8, a gradual pull of the lower string results in the top string breaking. Does this occur because of the ball's weight or its mass?Figure 4.8
In the string-pull illustration in Figure 4.8, a sharp jerk on the bottom string results in the bottom string breaking. Does this occur because of the ball's weight or its mass?Figure 4.8
Running a car's air conditioner usually increases fuel consumption. But, at certain speeds, a car with its windows open and with the air conditioner turned off can consume more fuel. Discuss and explain.
Discuss why one should even bother to use a machine if it cannot multiply work input to achieve greater work output. What, then, is the use of a machine?
When is energy most evident?
When the speed of a moving car is doubled, how much more kinetic energy does it have?

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Conceptual Physical Science 6th Edition Paul G. Hewitt, John A. Suchocki, Leslie A. Hewitt - Solutions

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