University Physics Volume 2
18th Edition
ISBN: 9781938168161
Author: OpenStax
Publisher: OpenStax
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Textbook Question
Chapter 5, Problem 21CQ
An atomic nucleus contains positively charged protons and uncharged neutrons. Since nuclei do stay together, what must we conclude about the forces these nuclear particles?
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5.48 ⚫ A flat (unbanked) curve on a highway has a radius of 170.0 m.
A car rounds the curve at a speed of 25.0 m/s. (a) What is the minimum
coefficient of static friction that will prevent sliding? (b) Suppose that the
highway is icy and the coefficient of static friction between the tires and
pavement is only one-third of what you found in part (a). What should
be the maximum speed of the car so that it can round the curve safely?
5.77 A block with mass m₁ is placed on an inclined plane with
slope angle a and is connected to a hanging block with mass m₂ by a
cord passing over a small, frictionless pulley (Fig. P5.74). The coef-
ficient of static friction is μs, and the coefficient of kinetic friction is
Mk. (a) Find the value of m₂ for which the block of mass m₁ moves up
the plane at constant speed once it is set in motion. (b) Find the value
of m2 for which the block of mass m₁ moves down the plane at constant
speed once it is set in motion. (c) For what range of values of m₂ will
the blocks remain at rest if they are released from rest?
5.78 .. DATA BIO The Flying Leap of a Flea. High-speed motion
pictures (3500 frames/second) of a jumping 210 μg flea yielded the
data to plot the flea's acceleration as a function of time, as shown in
Fig. P5.78. (See "The Flying Leap of the Flea," by M. Rothschild et al.,
Scientific American, November 1973.) This flea was about 2 mm long
and jumped at a nearly vertical takeoff angle. Using the graph, (a) find
the initial net external force on the flea. How does it compare to the
flea's weight? (b) Find the maximum net external force on this jump-
ing flea. When does this maximum force occur? (c) Use the graph to
find the flea's maximum speed.
Figure P5.78
150
a/g
100
50
1.0
1.5
0.5
Time (ms)
Chapter 5 Solutions
University Physics Volume 2
Ch. 5 - Check Your Understanding What would be different...Ch. 5 - Check Your Understanding What would be different...Ch. 5 - Check Your Understanding What is the electric...Ch. 5 - Check Your Understanding How would the strategy...Ch. 5 - Check Your Understanding How would the above limit...Ch. 5 - Check Your Understanding the electric field 100k...Ch. 5 - There are very large numbers of charged particles...Ch. 5 - Why do most objects tend to contain nearly equal...Ch. 5 - A positively charged It'd attracts a small piece...Ch. 5 - Two bodies attract each other electrically. Do...
Ch. 5 - How would you determine whether the charge on a...Ch. 5 - An eccentlic inventor attempts to levitate a cork...Ch. 5 - When a glass rod is lubbed with silk, it becomes...Ch. 5 - Why does a car always attract dust right after it...Ch. 5 - Does the uncharged conductor shown below...Ch. 5 - While walking on a mg, a person frequently becomes...Ch. 5 - Compare charging by conduction to charging by...Ch. 5 - Small pieces of tissue are attracted to a charged...Ch. 5 - Trucks that cany gasoline often have chains...Ch. 5 - Why do electrostatic experiments work so poorly in...Ch. 5 - Why do some clothes cling together after being...Ch. 5 - Can induction be used to produce charge on an...Ch. 5 - Suppose someone tells you that rubbing quartz with...Ch. 5 - A handheld copper rod does not acquire a charge...Ch. 5 - Suppose you place a charge q near a large metal...Ch. 5 - Would defining the charge on an electron to be...Ch. 5 - An atomic nucleus contains positively charged...Ch. 5 - Is the fore between two fixed charges influenced...Ch. 5 - When measuring an electlic field, could we use a...Ch. 5 - During fair weather, the electric field due to the...Ch. 5 - If the electric field at a point on the line...Ch. 5 - Two charges lie along the x-axis. Is it nue that...Ch. 5 - Give a plausible argument as to why the electric...Ch. 5 - Compare the electric fields of an infinite sheet...Ch. 5 - Describe the electric fields of an infinite...Ch. 5 - A negative charge is placed at center of a ring of...Ch. 5 - If a point charge is released fmm rest in a...Ch. 5 - Under what conditions, if any, will the trajectory...Ch. 5 - How would you experimentally distinguish an...Ch. 5 - A representation of an electric field shows 10...Ch. 5 - What is the ratio of the number of electlic field...Ch. 5 - What are the stable orientation(s) for a dipole in...Ch. 5 - Common static electricity involves charges ranging...Ch. 5 - If 1.801020 electrons move through a pocket...Ch. 5 - To stat a car engine, the car battery moves...Ch. 5 - A certain lightning bolt moves 40.0 C of charge....Ch. 5 - A 2.5-g copper penny is given a charge of 2.0109C...Ch. 5 - A 2.5-g copper penny is given a charge of 4.0109C...Ch. 5 - Suppose a speck of dust in an electrostatic...Ch. 5 - An amoeba has 1.001016 protons and a net charge of...Ch. 5 - A 50.0-g ball of copper has a net charge of 2.00C....Ch. 5 - What net charge would you place on a 100-g piece...Ch. 5 - How many coulombs of positive charge are there in...Ch. 5 - Two point particles with charges +3C and +5C are...Ch. 5 - Two charges +3C and +12C are fixed 1 m apart, with...Ch. 5 - In a salt crystal, the distance between adjacent...Ch. 5 - Protons in an atomic nucleus ale typically 1015 m...Ch. 5 - Suppose Earth and the Moon each carried a net...Ch. 5 - Point charges q1=50C and q2=25C are placed 1.0 m...Ch. 5 - Where must q3 of the preceding problem be placed...Ch. 5 - Two small balls, each of mass 5.0 g, are attached...Ch. 5 - Point charges q1=2.0C and q3=4.0C arelocated at...Ch. 5 - The net excess charge on two small spheres (small...Ch. 5 - Two small, identical conducting spheres repel each...Ch. 5 - A charge q=2.0C is placed at the point P shown...Ch. 5 - What is the net electric fore on the charge...Ch. 5 - Two fixed particles, each of charge 5.0106C , are...Ch. 5 - The charges q1=2.0107C, q2=4.0107C, and q3=1.0107C...Ch. 5 - What is the force on the charge q at the...Ch. 5 - Point charges q1=10C and q2=30C are fixed at...Ch. 5 - A particle of charge 2.0108C experiences an upward...Ch. 5 - On a typical clear day, the atmospheric electric...Ch. 5 - Consider an electron that is 1010 m from an alpha...Ch. 5 - Each the balls shown below carries a charge q and...Ch. 5 - What is the electric field at a point where the...Ch. 5 - A proton is suspended in the air by an electric...Ch. 5 - The electric field in a particular thundercloud is...Ch. 5 - A small piece of cork whose mass is 2.0 g is given...Ch. 5 - If the electric field is 100 N/C at a distance of...Ch. 5 - What is the electric field of a proton at the...Ch. 5 - (a) What is the electric field of an oxygen...Ch. 5 - Two point charges, q1=2.0107C and q2=6.0108C , are...Ch. 5 - Point charges q1=50C and q2=25C are placed 1.0 m...Ch. 5 - Can you arrange the two point charges q1=2.0106C...Ch. 5 - Point charges q1=q2=4.0106C are fixed on the...Ch. 5 - A thin conducting plate 1.0 m on the side is given...Ch. 5 - Calculate the magnitude and direction of the...Ch. 5 - Two thin conducting plates, each 25.0 cm on a...Ch. 5 - The charge per unit length on the thin rod shown...Ch. 5 - The charge per unit length on thin semicircular...Ch. 5 - Two thin parallel conducting plates are placed 2.0...Ch. 5 - A thin conducing plate 2.0 m on a side is given a...Ch. 5 - A total charge q is distributed uniformly along a...Ch. 5 - Charge is distributed along the entire x-axis...Ch. 5 - Charge is distributed along the entire x-axis...Ch. 5 - A rod bent into the arc of a circle subtends an...Ch. 5 - A pluton moves in the electric field E=200iN/C ....Ch. 5 - An electron and a proton, each starting from rest,...Ch. 5 - A spherical water droplet of radius 25 m carries...Ch. 5 - A proton enters the uniform electric field...Ch. 5 - Shown below is a small sphere of mass 0.25 g that...Ch. 5 - Two infinite rods, each carrying a uniform charge...Ch. 5 - Positive charge is distributed with a uniform...Ch. 5 - From a distance of 10 cm, a proton is projected...Ch. 5 - A particle of mass m and charge q moves along a...Ch. 5 - Which of the following electric field lines are...Ch. 5 - In this exercise, you practice electric field...Ch. 5 - Draw the electric field for a system of three...Ch. 5 - Two charges of equal magnitude but opposite sign...Ch. 5 - Suppose the electric field of an isolated point...Ch. 5 - Consider the equal and opposite charges shown...Ch. 5 - (a) What is the dipole moment of the configuration...Ch. 5 - A water molecule consists of two hydrogen atoms...Ch. 5 - Point charges q1=2.0C and q1=4.0C are located at...Ch. 5 - What is the force on the 5.0C charge shown below?Ch. 5 - What is the force on the charge placed at the 2.0C...Ch. 5 - Four charged particles are positioned at the...Ch. 5 - A charge Q is fixed at the origin and a second...Ch. 5 - A charge q=2.0C is released from rest when it is...Ch. 5 - What is the electric field at the midpoint M of...Ch. 5 - Find the electric field at P for the charge...Ch. 5 - (a) What is the electric field at the...Ch. 5 - Point charges are placed at the four corner of a...Ch. 5 - Three charges are positioned at the cornets of a...Ch. 5 - Prob. 119APCh. 5 - A particle of charge q and mass m is placed at the...Ch. 5 - Charge is distributed uniformly along the entire...Ch. 5 - The circular are shown below carries a charge per...Ch. 5 - Calculate the electric field due to a uniformly...Ch. 5 - The charge unit length on the thin shown below is ...Ch. 5 - The charge per unit length on the thin rod shown...Ch. 5 - The charge per unit length on the thin...
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- 5.4 ⚫ BIO Injuries to the Spinal Column. In the treatment of spine injuries, it is often necessary to provide tension along the spi- nal column to stretch the backbone. One device for doing this is the Stryker frame (Fig. E5.4a, next page). A weight W is attached to the patient (sometimes around a neck collar, Fig. E5.4b), and fric- tion between the person's body and the bed prevents sliding. (a) If the coefficient of static friction between a 78.5 kg patient's body and the bed is 0.75, what is the maximum traction force along the spi- nal column that W can provide without causing the patient to slide? (b) Under the conditions of maximum traction, what is the tension in each cable attached to the neck collar? Figure E5.4 (a) (b) W 65° 65°arrow_forwardThe correct answers are a) 367 hours, b) 7.42*10^9 Bq, c) 1.10*10^10 Bq, and d) 7.42*10^9 Bq. Yes I am positve they are correct. Please dont make any math errors to force it to fit. Please dont act like other solutiosn where you vaugley state soemthing and then go thus, *correct answer*. I really want to learn how to properly solve this please.arrow_forwardI. How many significant figures are in the following: 1. 493 = 3 2. .0005 = | 3. 1,000,101 4. 5.00 5. 2.1 × 106 6. 1,000 7. 52.098 8. 0.00008550 9. 21 10.1nx=8.817arrow_forward
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