Connect with LearnSmart for Krauskopf: The Physical Universe, 16e
16th Edition
ISBN: 9781259663895
Author: KRAUSKOPF, Konrad B.
Publisher: Mcgraw-hill Higher Education (us)
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 2, Problem 11MC
The weight of an object
- a. is the quantity of matter it contains
- b. is the force with which it is attracted to the earth
- c. is basically the same quantity as its mass but is expressed in different units
- d. refers to its inertia
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Complete the following statement: The
center of mass is
a. the region of an object where the
density has the largest value.
b. the region of an object where most
of the mass is located.
c. the point within an object that
moves as if all of the object's mass
where located there.
d. the point at the geometrical center
of an object.
e. the only point on an object at which
the gravitational force acts.
By what factor would a person’s weight at the surface of the Earth change if the Earth’s mass was the same but the Earth’s radius was twice its current size?
A. the person would weigh half as much when the earth’s radius doubled
B. the person would weigh the same when the earth’s radius doubled
C. the person would weigh four times as much when the earth’s radius doubled
D. the person would weigh one quarter as much when the earth’s radius doubled
E. the person would weigh twice as much when the earth’s radius doubled
Using the international system of units (SI system),
the unit of the universal gravitational constant (G)
is:
A. N.m
B. N.m/kg
C. N/m
D. Kg2/N.m
E. N.m2/(kg)2
Chapter 2 Solutions
Connect with LearnSmart for Krauskopf: The Physical Universe, 16e
Ch. 2 - Which of the following quantities is not a vector...Ch. 2 - Which of the following statements is incorrect? a....Ch. 2 - A box suspended by a rope is pulled to one side by...Ch. 2 - The sum of two vectors is a minimum when the angle...Ch. 2 - In which of the following examples is the motion...Ch. 2 - Two objects have the same size and shape but one...Ch. 2 - The acceleration of a stone thrown upward is a....Ch. 2 - You are riding a bicycle at constant speed when...Ch. 2 - When an object is accelerated, a. its direction...Ch. 2 - If we know the magnitude and direction of the net...
Ch. 2 - The weight of an object a. is the quantity of...Ch. 2 - Compared with her mass and weight on the earth, an...Ch. 2 - The earth and the moon exert equal and opposite...Ch. 2 - A car that is towing a trailer is accelerating on...Ch. 2 - When a boy pulls a cart, the force that causes him...Ch. 2 - In order to cause something to move in a circular...Ch. 2 - An object is moving in a circle with a constant...Ch. 2 - A car rounds a curve on a level road. The...Ch. 2 - The centripetal force that keeps the earth in its...Ch. 2 - The gravitational force with which the earth...Ch. 2 - The speed needed to put a satellite in orbit does...Ch. 2 - An astronaut inside an orbiting satellite feels...Ch. 2 - A bicycle travels 12 km in 40 min. Its average...Ch. 2 - Which one or more of the following sets of...Ch. 2 - An airplane whose airspeed is 200 km/h is flying...Ch. 2 - A ship travels 200 km to the south and then 400 km...Ch. 2 - How long does a car whose acceleration is 2 m/s2...Ch. 2 - A ball is thrown upward at a speed of 12 m/s. It...Ch. 2 - A car that starts from rest has a constant...Ch. 2 - A car traveling at 10 m/s begins to be accelerated...Ch. 2 - A car with its brakes applied has an acceleration...Ch. 2 - The distance the car in Multiple Choice 31 travels...Ch. 2 - A bottle falls from a blimp whose altitude is 1200...Ch. 2 - When a net force of 1 N acts on a 1-kg body, the...Ch. 2 - When a net force of 1 N acts on a 1-N body, the...Ch. 2 - A car whose mass is 1600 kg (including the driver)...Ch. 2 - A 300-g ball is struck with a bat with a force of...Ch. 2 - A bicycle and its rider together have a mass of 80...Ch. 2 - The weight of 400 g of onions is a. 0.041 N b. 0.4...Ch. 2 - A salami weighs 3 lb. Its mass is a. 0.31 kg b....Ch. 2 - An upward force of 600 N acts on a 50-kg...Ch. 2 - The upward force the rope of a hoist must exert to...Ch. 2 - The radius of the circle in which an object is...Ch. 2 - A car rounds a curve at 20 km/h. If it rounds the...Ch. 2 - A 1200-kg car whose speed is 6 m/s rounds a turn...Ch. 2 - If the earth were 3 times as far from the sun as...Ch. 2 - A woman whose mass is 60 kg on the earths surface...Ch. 2 - A man whose weight is 800 N on the earths surface...Ch. 2 - A woman standing before a cliff claps her hands,...Ch. 2 - The starter of a race stands at one end of a line...Ch. 2 - In 1977 Steve Weldon ate 91 m of spaghetti in 29...Ch. 2 - A snake is slithering toward you at 1.5 m/s. If...Ch. 2 - A woman jogs for 2 km at 8 km/h and then walks for...Ch. 2 - Three forces, each of 10 lb, act on the same...Ch. 2 - Is it correct to say that scalar quantities are...Ch. 2 - A man is rowing at 8 km/h in a river 1.5 km wide...Ch. 2 - A woman walks 70 m to an elevator and then rises...Ch. 2 - Two tugboats are towing a ship. Each exerts a...Ch. 2 - Can a rapidly moving object have the same...Ch. 2 - The acceleration of a certain moving object is...Ch. 2 - A car whose acceleration is constant reaches a...Ch. 2 - The brakes of a car are applied to give it an...Ch. 2 - A car starts from rest and reaches a speed of 40...Ch. 2 - The brakes of a car moving at 14 m/s are applied,...Ch. 2 - A car is moving at 10 m/s when it begins to be...Ch. 2 - The driver of a train moving at 20 m/s applies the...Ch. 2 - A car starts from rest and covers 400 m (very...Ch. 2 - Is it true that something dropped from rest falls...Ch. 2 - A rifle is aimed directly at a squirrel in a tree....Ch. 2 - The acceleration of gravity on the surface of...Ch. 2 - When a football is thrown, it follows a curved...Ch. 2 - A crate is dropped from an airplane flying...Ch. 2 - A stone is thrown horizontally from a cliff and...Ch. 2 - (a) Imagine that Charlotte drops a ball from a...Ch. 2 - A person in a stationary elevator drops a coin and...Ch. 2 - How fast must a ball be thrown upward to reach a...Ch. 2 - A person dives off the edge of a cliff 33 m above...Ch. 2 - A ball dropped from the roof of a building takes 4...Ch. 2 - A ball is thrown downward at 12 m/s. What is its...Ch. 2 - When will a stone thrown vertically upward at 9.8...Ch. 2 - A ball is thrown upward from the edge of a cliff...Ch. 2 - The air resistance experienced by a falling object...Ch. 2 - A ball is thrown vertically upward with an initial...Ch. 2 - A rifle is aimed directly at the bulls-eye of a...Ch. 2 - An airplane is in level flight at a speed of 100...Ch. 2 - A ball is thrown horizontally from the roof of a...Ch. 2 - A bullet is fired horizontally from a rifle at 200...Ch. 2 - An airplane whose speed is 60 m/s is flying at an...Ch. 2 - A person at the masthead of a sailboat moving at...Ch. 2 - Compare the tension in the coupling between the...Ch. 2 - In accelerating from a standing start to a speed...Ch. 2 - A 12,000-kg airplane launched by a catapult from...Ch. 2 - The brakes of a 1200-kg car exert a force of 4 kN....Ch. 2 - A force of 20 N gives an object an acceleration of...Ch. 2 - A bicycle and its rider together have a mass of 80...Ch. 2 - A 430-g soccer ball at rest on the ground is...Ch. 2 - A car and driver with a total mass of 1600 kg has...Ch. 2 - Before picking up the passengers, the driver of...Ch. 2 - Consider the statement: Sara weighs 55 kg. What is...Ch. 2 - When a force equal to its weight is applied to an...Ch. 2 - A person weighs 85 N on the surface of the moon...Ch. 2 - A mass of 8 kg and another of 12 kg are suspended...Ch. 2 - An 80-kg man slides down a rope at constant speed....Ch. 2 - How much force is needed to give a 5-kg box an...Ch. 2 - A parachutist whose total mass is 100 kg is...Ch. 2 - A person in an elevator suspends a 1-kg mass from...Ch. 2 - A person stands on a scale in an elevator. When...Ch. 2 - A 60-kg person stands on a scale in an elevator....Ch. 2 - Since the opposite forces of the third law of...Ch. 2 - What is the relationship, if any, between the...Ch. 2 - A book rests on a table. (a) What is the reaction...Ch. 2 - A car with its engine running and in forward gear...Ch. 2 - An engineer designs a propeller-driven spacecraft....Ch. 2 - Two children wish to break a string. Are they more...Ch. 2 - When a 5-kg rifle is fired, the 9-g bullet is...Ch. 2 - Where should you stand on the earths surface to...Ch. 2 - Under what circumstances, if any, can something...Ch. 2 - A person swings an iron ball in a vertical circle...Ch. 2 - A car makes a clockwise turn on a level road at...Ch. 2 - When you whirl a ball at the end of a string, the...Ch. 2 - A 40-kg crate is lying on the flat floor of a...Ch. 2 - The greatest force a level road can exert on the...Ch. 2 - Find the minimum radius at which an airplane...Ch. 2 - Some people believe that aliens from elsewhere in...Ch. 2 - The 200-g head of a golf club moves at 40 m/s in a...Ch. 2 - An airplane flying at a constant speed of 160 m/s...Ch. 2 - A track team on the moon could set new records for...Ch. 2 - If the moon were half as far from the earth as it...Ch. 2 - Compare the weight and mass of an object at the...Ch. 2 - A hole is bored to the center of the earth and a...Ch. 2 - Is the suns gravitational pull on the earth the...Ch. 2 - The centripetal force that keeps the moon in its...Ch. 2 - According to Keplers second law, the earth travels...Ch. 2 - A 2-kg mass is 1 m away from a 5-kg mass. What is...Ch. 2 - A dishonest grocer installs a 100-kg lead block...Ch. 2 - A bull and a cow elephant, each of mass 2000 kg,...Ch. 2 - An airplane makes a vertical circle in which it is...Ch. 2 - Two satellites are launched from Cape Canaveral...Ch. 2 - Is an astronaut in an orbiting spacecraft actually...Ch. 2 - With the help of the data in Table 17-1, find the...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- The acceleration due to gravity on the surface of a planet is three times as large as it is on the surface of Earth. The mass density of the planet is known to be twice that of Earth. What is the radius of this planet in terms of Earth’s radius?arrow_forwardA mountain 10.0 km from a person exerts a gravitational force on him equal to 2.00 of his weight. (a) Calculate the mass of the mountain. (b) Compare the mountain’s mass with that of Earth. (c) What is unreasonable or inconsistent? (Note that accurate gravitational measurements can easily detect the effect of nearby mountains and variations in local geology.)arrow_forwardReview. Assume a certain liquid, with density 1 230 kg/m3, exerts no friction force on spherical objects. A ball of mass 2.10 kg and radius 9.00 cm is dropped from rest into a deep tank of this liquid from a height of 3.30 m above the surface. (a) Find the speed at which the hall enters the liquid. (b) Evaluate the magnitudes of the two forces that are exerted on the ball as it moves through the liquid. (c) Explain why the ball moves down only a limited distance into the liquid and calculate this distance. (d) With what speed will the ball pop up out of the liquid? (c) How does the time interval tdown, during which the ball moves from the surface down to its lowest point, compare with the lime interval tup for the return trip between the same two points? (f) What If? Now modify the model to suppose the liquid exerts a small friction force on the ball, opposite in direction to its motion. In this case, how do the time intervals tdown and tup compare? Explain your answer with a conceptual argument rather than a numerical calculation.arrow_forward
- According to the National Academy of Sciences, the Earths surface temperature has risen about 1F since 1900. There is evidence that this climate change may be due to human activity. The organizers of World Jump Day argue that if the Earth were in a slightly larger orbit, we could avoid global warming and climate change. They propose that we move the Earth into this new orbit by jumping. The idea is to get people in a particular time zone to jump together. The hope is to have 600 million people jump in a 24-hour period. Lets see if it will work. Consider the Earth and its inhabitants to make up the system. a. Estimate the number of people in your time zone. Assume they all decide to jump at the same time; estimate the total mass of the jumpers. b. What is the net external force on the Earthjumpers system? c. Assume the jumpers use high-tech Flybar pogo sticks (Fig. P8.32), which allow them to jump 6 ft. What is the displacement of the Earth as a result of their jump? d. What happens to the Earth when the jumpers land?arrow_forwardA body on the surface of a planet with the same radius as Earth’s weighs 10 times more than it does on Earth. What is the mass of this planet in terms of Earth’s mass?arrow_forwardWhat is the gravitational acceleration close to the surface of a planet with a mass of 2ME and radius of 2RE where ME, and RE are the mass and radius of Earth, respectively? Answer as a multiple of g, the magnitude of the gravitational acceleration near Earths surface. (See Section 7.5.)arrow_forward
- Imagine that nitrogen and other atmospheric gases were more soluble in water so that the atmosphere of the Earth is entirely absorbed by the oceans. Atmospheric pressure would then be zero, and outer space would start at the planets surface. Would the Earth then have a gravitational field? (a) Yes, and at the surface it would be larger in magnitude than 9.8 N/kg. (b) Yes, and it would be essentially the same as the current value. (c) Yes, and it would be somewhat less than 9.8 N/kg. (d) Yes, and it would be much less than 9.8 N/kg. (e) No, it would not.arrow_forwardIt has been suggested dial rotating cylinders about 20 km in length and 8 km in diameter be placed in space and used as colonies. The purpose of the rotation is to simulate gravity for the inhabitants. Explain this concept for producing an effective imitation of gravity.arrow_forwardReview. A rifle bullet with a mass of 12.0 g traveling toward the right at 260 m/s strikes a large hag of sand and penetrates it to a depth of 23.0 cm. Determine the magnitude and direction of the friction force (assumed constant) that acts on the bullet.arrow_forward
- (a) Calculate Earth's mass given the acceleration due to gravity at the North Pole is 9.830 m/s2 and the radius of the Earth is 6371 km from center to pole. (b) Compare this with the accepted value of 5.9791024 kg.arrow_forwardUnreasonable Results (a) Based on Kepler's laws and information on the orbital characteristics of the Moon, calculate the orbital radius for an Earth satellite having a period of 1.00 h. (b) What is unreasonable about this result? (c) What is unreasonable or inconsistent about the premise of a 1.00 h orbit?arrow_forwardCasting of molten metal is important in many industrial processes. Centrifugal casting is used for manufacturing pipes, bearings, and many other structures. A cylindrical enclosure is rotated rapidly and steadily about a horizontal axis, as in Figure P7.62. Molten metal is poured into the rotating cylinder and then cooled, forming the finished product. Turning the cylinder at a high rotation rate forces the solidifying metal strongly to the outside. Any bubbles are displaced toward the axis so that unwanted voids will not be present in the casting. Suppose a copper sleeve of inner radius 2.10 cm and outer radius 2.20 cm is to be cast. To eliminate bubbles and give high structural integrity, the centripetal acceleration of each bit of metal should be 100g. What rate of rotation is required? State the answer in revolutions per minute. Figure P7.62arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Glencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-HillUniversity Physics Volume 1PhysicsISBN:9781938168277Author:William Moebs, Samuel J. Ling, Jeff SannyPublisher:OpenStax - Rice UniversityCollege PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
- Physics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage LearningCollege PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax College
Glencoe Physics: Principles and Problems, Student...
Physics
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Glencoe/McGraw-Hill
University Physics Volume 1
Physics
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:OpenStax - Rice University
College Physics
Physics
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
Physics for Scientists and Engineers, Technology ...
Physics
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:OpenStax College
Newton's First Law of Motion: Mass and Inertia; Author: Professor Dave explains;https://www.youtube.com/watch?v=1XSyyjcEHo0;License: Standard YouTube License, CC-BY