EP CONCEPTUAL PHYSICAL SCI.-MOD.MASTER.
6th Edition
ISBN: 9780134091983
Author: Hewitt
Publisher: PEARSON CO
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 4, Problem 78E
If you were in a freely falling elevator and you dropped a pencil, it would hover in front of you. Is there a force of gravity acting on the pencil? Defend your answer.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
A cab driver heads south with a steady speed of v₁ = 20.0 m/s for t₁ = 3.00 min, then makes a right turn and travels at v₂ = 25.0 m/s for t₂ = 2.80 min, and then drives northwest at v3 = 30.0 m/s for t3 = 1.00 min. For this 6.80-min trip, calculate the following.
Assume +x is in the eastward direction.
(a) total vector displacement (Enter the magnitude in m and the direction in degrees south of west.)
magnitude
direction
For each straight-line movement, model the car as a particle under constant velocity, and draw a diagram of the displacements, labeling the distances and angles. Let the starting point be the origin of your coordinate system. Use the relationship
speed = distance/time to find the distances traveled during each segment. Write the displacement vector, and calculate its magnitude and direction. Don't forget to convert min to s! m
Model the car as a particle under constant velocity, and draw a diagram of the displacements, labeling the distances and angles. Let the…
î
A proton is projected in the positive x direction into a region of uniform electric field E = (-5.50 x 105) i N/C at t = 0. The
proton travels 7.20 cm as it comes to rest.
(a) Determine the acceleration of the proton.
magnitude 5.27e13
direction -X
m/s²
(b) Determine the initial speed of the proton.
8.71e-6
magnitude The electric field is constant, so the force is constant, which means the acceleration will be constant.
m/s
direction +X
(c) Determine the time interval over which the proton comes to rest.
1.65e-7
Review you equations for constant accelerated motion. s
Three charged particles are at the corners of an equilateral triangle as shown in the figure below. (Let q = 2.00 μC, and
L = 0.750 m.)
y
7.00 με
60.0°
L
9
-4.00 μC
x
(a) Calculate the electric field at the position of charge q due to the 7.00-μC and -4.00-μC charges.
112
Once you calculate the magnitude of the field contribution from each charge you need to add these as vectors.
KN/CI + 64
×
Think carefully about the direction of the field due to the 7.00-μC charge. KN/Cĵ
(b) Use your answer to part (a) to determine the force on charge q.
240.0
If you know the electric field at a particular point, how do you find the force that acts on a charge at that point? mN
Î + 194.0
×
If you know the electric field at a particular point, how do you find the force that acts on a charge at that point? mN
Chapter 4 Solutions
EP CONCEPTUAL PHYSICAL SCI.-MOD.MASTER.
Ch. 4 - What did Newton discover about gravity?Ch. 4 - In what sense does the Moon fall?Ch. 4 - State Newtons law of universal gravitation in...Ch. 4 - What is the magnitude of gravitational force...Ch. 4 - What is the magnitude of the gravitational force...Ch. 4 - How does the force of gravity between two bodies...Ch. 4 - Prob. 7RCQCh. 4 - Would the springs inside a bathroom scale be more...Ch. 4 - Would the springs inside a bathroom scale be more...Ch. 4 - Explain why occupants of the international Space...
Ch. 4 - Under what conditions is your weight equal to mg?Ch. 4 - What was the cause of perturbations discovered in...Ch. 4 - The perturbations of Uranus led to what greater...Ch. 4 - What is the status of Pluto in the family of...Ch. 4 - Which is thought to be more prevalent in the...Ch. 4 - A stone is thrown upward at an angle. Neglecting...Ch. 4 - A stone is thrown upward at an angle. Neglecting...Ch. 4 - A projectile is launched upward at an angle of 75...Ch. 4 - A projectile is launched vertically at 100 m/s. If...Ch. 4 - What connection does Earth's curvature have with...Ch. 4 - Why is it important that a satellite remain above...Ch. 4 - When a satellite is above Earths atmosphere, is it...Ch. 4 - If a satellite were beyond Earths gravity, what...Ch. 4 - Why doesnt the force of gravity change the speed...Ch. 4 - Why doesnt the force of gravity change the speed...Ch. 4 - Is the period longer or shorter for orbits of...Ch. 4 - Why does the force of gravity change the speed of...Ch. 4 - Prob. 28RCQCh. 4 - Prob. 29RCQCh. 4 - A space vehicle can outrun Earth's gravity, but...Ch. 4 - F=Gm1m2d2 Using the formula for gravity, show that...Ch. 4 - F=Gm1m2d2 Calculate the force of gravity on the...Ch. 4 - F=Gm1m2d2 Show that the average force of gravity...Ch. 4 - F=Gm1m2d2 Show that the force of gravity between...Ch. 4 - F=Gm1m2d2 Show that the force of gravity between a...Ch. 4 - F=Gm1m2d2 Calculate the force of gravity between a...Ch. 4 - Suppose you stood atop a ladder that was so tall...Ch. 4 - Show that the gravitational force between two...Ch. 4 - Show that there is no change in the force of...Ch. 4 - Find the change in the force of gravity between...Ch. 4 - Consider a pair of planets in which the distance...Ch. 4 - Many people mistakenly believe that the astronauts...Ch. 4 - Newtons universal law of gravity tells us that...Ch. 4 - An airplane is flying horizontally with speed 1000...Ch. 4 - A ball is thrown horizontally from a cliff at a...Ch. 4 - A satellite at a particular point along an...Ch. 4 - A rock thrown horizontally from a bridge hits the...Ch. 4 - A baseball is tossed at a steep angle into the air...Ch. 4 - A penny on its side moving at speed v slides off...Ch. 4 - Students in a lab measure the speed of a steel...Ch. 4 - The planet and its moon gravitationally attract...Ch. 4 - Consider the light of multiple candle flames, each...Ch. 4 - Rank, from greatest to least, the average...Ch. 4 - A ball is tossed off the edge of a cliff with the...Ch. 4 - The dashed lines show three circular orbits about...Ch. 4 - The positions of a satellite in elliptical orbit...Ch. 4 - What would be the path of the Moon if somehow all...Ch. 4 - Is the gravitational force greater on a 1-kg piece...Ch. 4 - Consider a space pod somewhere between Earth and...Ch. 4 - An astronaut lands on a planet that has the same...Ch. 4 - An astronaut lands on a planet that has the same...Ch. 4 - If Earth somehow expanded to a larger radius, with...Ch. 4 - How would the force between a planet and its moon...Ch. 4 - Phil work on the 15th floor of an office building,...Ch. 4 - In 2013, Curiosity landed on the surface of Mars....Ch. 4 - Earth is not exactly a sphere but, rather, bulges...Ch. 4 - A small light source located 1 m in front of a...Ch. 4 - Prob. 73ECh. 4 - Why do the passengers in high-altitude jet planes...Ch. 4 - To begin your wingsuit flight, you step off the...Ch. 4 - In synchronized diving, divers remain in the air...Ch. 4 - What two forces act on you while you are in a...Ch. 4 - If you were in a freely falling elevator and you...Ch. 4 - In the 2014 Rosetta mission, a probe from Earth...Ch. 4 - How does the size of Pluto compare with that of...Ch. 4 - Elements beyond the naturally occurring elements...Ch. 4 - Earth and the Moon are gravitationally attracted...Ch. 4 - Chuck Stone releases a ball near the top of a...Ch. 4 - In the absence of air resistance, why does the...Ch. 4 - At what point in its trajectory does a batted...Ch. 4 - A heavy crate accidentally falls from a...Ch. 4 - Two golfers each hit a ball at the same speed, but...Ch. 4 - When you jump upward, your hang time is the time...Ch. 4 - The hang time of a basketball player who jumps a...Ch. 4 - If youve had the good fortune to witness the...Ch. 4 - Newton knew that if a cannonball were fired from a...Ch. 4 - Satellites are normally seat into orbit by firing...Ch. 4 - Hawaii presents the most efficient launching site...Ch. 4 - Does the speed of a falling object depend on its...Ch. 4 - Prob. 95ECh. 4 - What is the shape of the orbit when the velocity...Ch. 4 - If a flight mechanic drops a box of tools from a...Ch. 4 - How could an astronaut in a space vehicle drop an...Ch. 4 - If you stopped an Earth satellite dead in its...Ch. 4 - Prob. 100ECh. 4 - At what point in Earths elliptical orbit about the...Ch. 4 - The force of gravity on an Earth satellite in...Ch. 4 - Earth is farthest away from the Sun in July and...Ch. 4 - In the 2014 Rosetta mission, when a probe from...Ch. 4 - An object tossed vertically will reach a maximum...Ch. 4 - Comment on whether or not the following label on a...Ch. 4 - Newton tells us that gravitational force acts on...Ch. 4 - "Okay," a friend says, "gravitational force is...Ch. 4 - An apple falls because of its gravitational...Ch. 4 - Jupiter is more than 300 times as massive as...Ch. 4 - When will the gravitational force between you and...Ch. 4 - Explain why the following reasoning is wrong. "The...Ch. 4 - Some people dismiss the validity of scientific...Ch. 4 - Shruti Kumar projects a ball at an angle of 30...Ch. 4 - A friend claims that bullets fired by some...Ch. 4 - A park ranger shoots a monkey hanging from a...Ch. 4 - Which requires more fuel: a rocket going from...Ch. 4 - Two facts: A freely falling object at Earth's...Ch. 4 - A new member of your discussion group says that,...Ch. 4 - A friend says that astronauts inside the...Ch. 4 - Another new member of your discussion group says...Ch. 4 - Occupants inside future donut-shaped rotating...Ch. 4 - A satellite can orbit at 5 km above the Moon's...Ch. 4 - As part of their training before going into orbit,...Ch. 4 - Prob. 125DQCh. 4 - A communications satellite with a 24-h period...Ch. 4 - This situation should elicit good discussion: In...Ch. 4 - (Here's a Chapter 2-type question): When the brake...Ch. 4 - (Here's a Chapter 4-type question): The first...Ch. 4 - Here's a situation to challenge you and your...Ch. 4 - Choose the BEST way to complete the statement. 1....Ch. 4 - The force of gravity between two planets depends...Ch. 4 - Inhabitants of the International Space Station ate...Ch. 4 - A spacecraft on its way from Earth to the Moon is...Ch. 4 - Theoretically, a baseball tossed horizontally in a...Ch. 4 - When no air resistance acts on a projectile, its...Ch. 4 - Without air resistance, a ball tossed at an angle...Ch. 4 - When you toss a projectile sideways, it curves as...Ch. 4 - A satellite in elliptical orbit about Earth...Ch. 4 - A satellite in Earth orbit is mainly above Earth's...
Additional Science Textbook Solutions
Find more solutions based on key concepts
The following data were obtained from a disk-diffusion test. Antibiotic Zone of Inhibition A 15 mm B 0 mm c 7 m...
Microbiology: An Introduction
1.1 Write a one-sentence definition for each of the following:
a. chemistry
b. chemical
Chemistry: An Introduction to General, Organic, and Biological Chemistry (13th Edition)
Compare each of the mechanisms listed here with the mechanism for each of the two parts of the acid-catalyzed h...
Organic Chemistry (8th Edition)
2. Define equilibrium population. Outline the conditions that must be met for a population to stay in genetic e...
Biology: Life on Earth (11th Edition)
What name is given to the zone of greatest seismic activity?
Applications and Investigations in Earth Science (9th Edition)
3. What are serous membranes, and what are their functions?
Human Anatomy & Physiology (2nd Edition)
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
- In the Donkey Kong Country video games you often get around by shooting yourself out of barrel cannons. Donkey Kong wants to launch out of one barrel and land in a different one that is a distance in x of 9.28 m away. To do so he launches himself at a velocity of 22.6 m/s at an angle of 30.0°. At what height does the 2nd barrel need to be for Donkey Kong to land in it? (measure from the height of barrel 1, aka y0=0)arrow_forwardFor which value of θ is the range of a projectile fired from ground level a maximum? 90° above the horizontal 45° above the horizontal 55° above the horizontal 30° above the horizontal 60° above the horizontalarrow_forwardA map from The Legend of Zelda: The Breath of the Wild shows that Zora's Domain is 7.55 km in a direction 25.0° north of east from Gerudo Town. The same map shows that the Korok Forest is 3.13 km in a direction 55.0° west of north from Zora's Domain. The figure below shows the location of these three places. Modeling Hyrule as flat, use this information to find the displacement from Gerudo Town to Korok Forest. What is the magnitude of the displacement? Find the angle of the displacement. Measure the angle in degrees north of east of Gerudo Town.arrow_forward
- Race car driver is cruising down the street at a constant speed of 28.9 m/s (~65 mph; he has a “lead” foot) when the traffic light in front of him turns red. a) If the driver’s reaction time is 160 ms, how far does he and his car travel down the road from the instant he sees the light change to the instant he begins to slow down? b) If the driver’s combined reaction and movement time is 750 ms, how far do he and his car travel down the road from the instant he sees the light change to the instant he slams on her brakes and car begins to slow down? c) If the driver’s average rate of acceleration is -9.5 m/s2 as he slows down, how long does it take him to come to a stop (use information about his speed of 28.9 m/s but do NOT use his reaction and movement time in this computation)? Please answer parts a-c. Show all work. For each question draw a diagram to show the vector/s. Show all the step and provide units in the answers. Provide answer to 2 decimal places unless stated otherwise.arrow_forwardBelow you will find 100 m split times for the American and France men’s 4x100 meter free style relay race during the 2008 Beijing Summer Olympics). Answer questions a-d. a) What was the total race time for each team, in seconds? b) Which team won the race? What was the difference in the teams’ times? c) What was the average speed for each team for the whole race? (provide answer to 3 decimal places). d) Calculate the average speed for each swimmer and report the results in a table like the one above. Remember to show the calculation steps. (provide answer to 3 decimal places). PLEASE SHOW ALL WORK AND STEPS.arrow_forwardNeed complete solution Pleasearrow_forward
- Below you will find 100 m split times for the American and France men’s 4x100 meter free style relay race during the 2008 Beijing Summer Olympics). Fill out the chart below. Calculate average speed per split (m/s). Show all work.arrow_forwardThe magnitude of vector →A i s 261. m and points in the direction 349.° counterclockwise from the positive x-axis. Calculate the x-component of this vector . Calculate the y-component of this vector.arrow_forwardNo chatgpt pls will upvotearrow_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-Hill
Stars and Galaxies (MindTap Course List)PhysicsISBN:9781337399944Author:Michael A. SeedsPublisher:Cengage Learning
Stars and GalaxiesPhysicsISBN:9781305120785Author:Michael A. Seeds, Dana BackmanPublisher:Cengage Learning
Foundations of Astronomy (MindTap Course List)PhysicsISBN:9781337399920Author:Michael A. Seeds, Dana BackmanPublisher:Cengage Learning
Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Glencoe Physics: Principles and Problems, Student...
Physics
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Glencoe/McGraw-Hill
Stars and Galaxies (MindTap Course List)
Physics
ISBN:9781337399944
Author:Michael A. Seeds
Publisher:Cengage Learning
Stars and Galaxies
Physics
ISBN:9781305120785
Author:Michael A. Seeds, Dana Backman
Publisher:Cengage Learning
Foundations of Astronomy (MindTap Course List)
Physics
ISBN:9781337399920
Author:Michael A. Seeds, Dana Backman
Publisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
General Relativity: The Curvature of Spacetime; Author: Professor Dave Explains;https://www.youtube.com/watch?v=R7V3koyL7Mc;License: Standard YouTube License, CC-BY