Caution• IMPORTANT: There is a strong magnetic field surrounding theflashlight. We recommend that you keep the flashlight 14 inch-es away from pacemakers as well as cassette tapes, computerfloppies, video tapes, credit cards, televisions, computer moni-tors and devices that contain a cathode ray tube.Charging Time• The flashlight provides up to five minutes of continuous lightwhen charged for 30 seconds.• lf the flashlight is completely drained, it requires approximately180 shakes (three shakes per second for 60 seconds) to fullycharge the capacitor.•For prolonged use, the flashlight should be turned off and shak-en 10 to 15 seconds every two to three minutes.Charging the Shake FlashlightNo battery is required for the flashlight. To charge it, just shake it.1. Tum off the flashlight.2. Hold it horizontally and shake moderately two to three timesper second. (See Fig. 1) The flashlight provides up to fiveminutes of continuous light when charged for 30 seconds.Figure 1 Based on the design and instruction for the Shake Flashlight, four students made claimsas to how it works:StudentClaim"There is a strong magnet in the flashlight and a thick coil of wire in the middle. When youshake the flashlight, the magnet passes through the coil, which rubs electrons off of themagnet. By shaking it many times, enough charge builds up to power the light."A"There is a strong magnet in the flashlight and a thick coil of wire in the middle. When youshake the flashlight, the magnet passes through the coil, inducing a spike of electric current inthe coil's wire. By shaking it many times, enough charge is built up to power the light.""There is a strong magnet in the flashlight and a thick coil of wire in the middle. When youshake the flashlight, the magnet passes through the coil, which applies a magnetic inertia onthe electrons in the coil. This inertia makes the electrons in the coil creating a spike ofcurrent. By shaking it many times, enough charge is built up to power the light.""There is a coil of wire in the flashlight and strong magnets inside at either end. When youshake the flashlight, the coil of wire hits into the magnets at each end of the flashlight. Whenthe coil hits the magnets, its kinetic energy is turned into electrical energy. By shaking it manytimes, enough electric energy builds up to power the light."DWhich student has the most physically accurate claim about how the Shake Flashlight works?

Answered: Image /qna-images/answer/3a27b1ad-e20f-4811-930c-4cd8f055c3d1.jpg

Caution • IMPORTANT: There is a strong magnetic field surrounding the flashlight. We recommend that you keep the flashlight 14 inch- es away from pacemakers as well as cassette tapes, computer floppies, video tapes, credit cards, televisions, computer moni- tors and devices that contain a cathode ray tube. Charging Time • The flashlight provides up to five minutes of continuous light when charged for 30 seconds. • lf the flashlight is completely drained, it requires approximately 180 shakes (three shakes per second for 60 seconds) to fully charge the capacitor. • For prolonged use, the flashlight should be turned off and shak- en 10 to 15 seconds every two to three minutes. Charging the Shake Flashlight No battery is required for the flashlight. To charge it, just shake it. 1. Turn off the flashlight. 2. Hold it horizontally and shake moderately two to three times per second. (See Fig. 1) The flashlight provides up to five minutes of continuous light when charged for 30 seconds. Figure 1

Caution • IMPORTANT: There is a strong magnetic field surrounding the flashlight. We recommend that you keep the flashlight 14 inch- es away from pacemakers as well as cassette tapes, computer floppies, video tapes, credit cards, televisions, computer moni- tors and devices that contain a cathode ray tube. Charging Time • The flashlight provides up to five minutes of continuous light when charged for 30 seconds. • lf the flashlight is completely drained, it requires approximately 180 shakes (three shakes per second for 60 seconds) to fully charge the capacitor. • For prolonged use, the flashlight should be turned off and shak- en 10 to 15 seconds every two to three minutes. Charging the Shake Flashlight No battery is required for the flashlight. To charge it, just shake it. 1. Turn off the flashlight. 2. Hold it horizontally and shake moderately two to three times per second. (See Fig. 1) The flashlight provides up to five minutes of continuous light when charged for 30 seconds. Figure 1

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Related questions

Q: #3 Magnetic field strength in the center of a ring Suppose a conductor in the shape of a perfectly…

A: Given Data: The current in the ring is, i=0.451 A The radius of the ring is, r=0.0100 m The…

Q: S Eddy currents are ans and other non

A: a)The direction of the eddy current induced in the can as it enters the magnetic field is option 2:…

Q: 4 - In a certain region the electric field is given as Ē = yì + 5zyťk V/m, Calculate the following…

A: Using Maxwell equations

Q: 13. •A proton traveling to the right enters a region of uniform magnetic field that points into the…

Q: • Auniform magnetic field equal to 1.48 Tk is in the +z di- 16 rection. Find the force exerted by…

Q: You perform a calculation and find that the units of your answer are A-m Based on only this…

A: Answer A) a magnetic field Solution

A: Step 1: Step 2: Step 3: Step 4:

Q: B?• the figure shown, a wire is oriented perpendicular to the screen with a current that is moving…

A: The right-hand thumb rule states that if you hold a current-carrying conductor in your right hand…

Q: %24 Problem-2 on magnetic force/field/flux/Faraday-Lenz' Law Given: A single square coil consisting…

Q: A stationary particle of charge q = 2.6 x 10-8 C is placed in a laser beam (an electromagnetic wave)…

A: We know force acting on a charge particle moving in an electric field, F=qE here, q=charge of the…

Q: 3) Two long straught wires are perpendicusor. The cureats in each wire are in the directions shown…

Q: • B? I e In the figure above, a wire is oriented vertically across the screen with a current that is…

A: According to right hand thumb rule , when a current carrying wire is held in a right hand with only…

Q: the Module 6, we learned that magnetic field can be produced by a current-carrying ire. A long…

Q: In the figure shown, a wire is oriented horizontally across the screen with a current that is moving…

A: To find direction of magnetic field?

Q: •• The current in the wire shown in Figure 27-52 is 8.0 A. Find the magnetic field at point P. 32…

Q: 48 • What is the maximum torque on a 400-turn circular coil of radius 0.75 cm that carries a current…

Q: If a piece of copper is placed in an applied electric field of strength 150 N/C, roughly how long…

A: Polarization of metals when kept in an electric field is instantaneous. It does not matter how…

Q: |8] decreasing A metal loop moving towards an area of decreasing external magnetic field strength…

A: According to Lenz's law, the direction of induced current in the loop is such that it opposes the…

Q: A stationary particle of charge q = 2.6 x 10-8 C is placed in a laser beam (an electromagnetic wave)…

Q: The peak magnetic field strength in a residential microwave oven is 9.2 x 10-5 T. • What is the…

Q: (a) A square loop of wire with sides of length 40 cm is in a uniform magnetic field perpendicular to…

A: Given: Side,S1=40cm=40×10-2mSide,S2=20cm=20×10-2mInitial Magnetic Field,BI=100mT=100×10-3TFinal…

Q: 50. •• IP Consider the long, straight, current-carrying wires shown in Figure 22-39. One wire…

Q: 2. A long wire carrying 4.50 A of current makes two 90° bends, as shown in the figure below. This…

Q: Hasbro is (hypothetically) contracting you to help design a new series of Nerf railguns e patent…

A: Given information: The magnetic field strength (B) = 0.35 T The length of the bar barrel (l) = 0.21…

Q: Plz correct solution.

A: Step 1: Step 2: Step 3: Step 4:

Q: In Figure 27-55, one current is 8.0 A into the page, the other current is 8.0 A_out of the page, and…

Q: 29. •Determine the directions of the magnetic forces that act on positive charges moving in the…

Q: •65 What must be the magnitude of a uniform electric field if it is to have the same energy density…

A: 65) Magnetic field (B) = 0.50 T Energy density of a uniform electric field = energy density possesed…

Concept explainers

Magnetic Field Of Coaxial Cable

The word coaxial means same axis. So for a long straight cable to be coaxial, it must have concentric cylindrical shaped conductor around it. Coaxial cable (popularly called ‘coax’) has various applications ranging from current conductors to radiofrequency signal transmitters. This cable has lower emission losses and provides protection from electromagnetic interference which allows signals with less power to transmit over longer distances.For example, currents produced in the pickup of a stereo turntable generally travel to the amplifier through a coaxial cable.The self-inductance of a coaxial cable is another important characteristic, because it influences the propagation of electrical signals in the cable.

Question

Caution
• IMPORTANT: There is a strong magnetic field surrounding the
flashlight. We recommend that you keep the flashlight 14 inch-
es away from pacemakers as well as cassette tapes, computer
floppies, video tapes, credit cards, televisions, computer moni-
tors and devices that contain a cathode ray tube.
Charging Time
• The flashlight provides up to five minutes of continuous light
when charged for 30 seconds.
• lf the flashlight is completely drained, it requires approximately
180 shakes (three shakes per second for 60 seconds) to fully
charge the capacitor.
•For prolonged use, the flashlight should be turned off and shak-
en 10 to 15 seconds every two to three minutes.
Charging the Shake Flashlight
No battery is required for the flashlight. To charge it, just shake it.
1. Tum off the flashlight.
2. Hold it horizontally and shake moderately two to three times
per second. (See Fig. 1) The flashlight provides up to five
minutes of continuous light when charged for 30 seconds.
Figure 1

Based on the design and instruction for the Shake Flashlight, four students made claims
as to how it works:
Student
Claim
"There is a strong magnet in the flashlight and a thick coil of wire in the middle. When you
shake the flashlight, the magnet passes through the coil, which rubs electrons off of the
magnet. By shaking it many times, enough charge builds up to power the light."
A
"There is a strong magnet in the flashlight and a thick coil of wire in the middle. When you
shake the flashlight, the magnet passes through the coil, inducing a spike of electric current in
the coil's wire. By shaking it many times, enough charge is built up to power the light."
"There is a strong magnet in the flashlight and a thick coil of wire in the middle. When you
shake the flashlight, the magnet passes through the coil, which applies a magnetic inertia on
the electrons in the coil. This inertia makes the electrons in the coil creating a spike of
current. By shaking it many times, enough charge is built up to power the light."
"There is a coil of wire in the flashlight and strong magnets inside at either end. When you
shake the flashlight, the coil of wire hits into the magnets at each end of the flashlight. When
the coil hits the magnets, its kinetic energy is turned into electrical energy. By shaking it many
times, enough electric energy builds up to power the light."
D
Which student has the most physically accurate claim about how the Shake Flashlight works?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

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

1. A circular current loop of 3 turns has radius 0.2 m and current 5 A. a. The current loop shown will act like a magnet. Which is true of the poles? • The north pole is below the current loop and the south pole is above. The north pole is above the current loop and the south pole is below. The north pole is out of the page and the south pole is into the page. • The north pole is into the page and the south pole is out of the page. • b. What is the direction of the magnetic dipole moment of the loop? Use the legend to indicate direction. C. What is the magnitude of the magnetic dipole moment of the current loop? d. The magnetic field along the axis of the current loop is 8₁ at a distance z₁ from the plane of the loop. What is the magnetic field at a distance 22₁ from the plane of the loop? Assume 2₁ » R and that there are no other sources of magnetic fields. (">>= "much greater than"). • 8₁/8 8₁ 8₁/4 • 28₁ • 8₁/2 • 48₁ • 8₁/√2 • 88₁ e ho g h a (out) i (in) i k zero
•P А. В. d D ° Now we're viewing a cross-section of a solenoid that has n turns per unit length and a current I. The solenoid is very long – we can consider it to be infinitely long for our purposes – and the individual colds are very tightly packed. a. What's the direction of the magnetic field inside the solenoid? (Hint: use your knowledge of the field produced by currents to vector-add the fields at each point.) You can write your answer here or upload a picture of your drawn arrows. b. How does the magnitude of the magnetic field vary from point A to point B? What about from point C to point D? The magnetic field outside the solenoid (e.g. at point P) is zero. Explain why this makes sense. Draw an Amperian loop that includes points A and P. What shape of a loop makes sense to use, for the purpose of finding the magnetic field at point A? Explain why you chose the shape you chose. d. Use Ampere's law to find the magnitude of the magnetic field at point A inside the solenoid. С. е.…
- given - diagram - reasoning - steps - reflection
•• The 10-cm-wide, zero-resistance wire shown in Figure P27.56 is pushed toward the 2.0 № resistor at a steady speed of 0.50 m/s. The magnetic field strength is 0.50 T. a. What is the magnitude of the pushing force? b. How much power does the pushing force supply to the wire? c. What are the direction and magnitude of the induced current? d. How much power is dissipated in the resistor?
= In the three separate arrangements (a), (b), and (c) shown below a current i 11 A is set up in a long conductor formed by bending a wire into a semicircle/circle of radius R = 25 cm. Find the magnetic field at points 1, 2, and 3? Use out of the page as the positive direction. (a) (b) (c) • — i The magnetic field at '1', B₁ = = The magnetic field at '2', B2 The magnetic field at '3', B3 = 2 Units HT Units HT Units uT 3.
16
•• A 50-cm-long, 10-cm-diameter solenoid creates the uniform magnetic field for an experiment in which electrons undergo cyclotron motion with a frequency of 550 MHz. The solenoid has 2000 turns of wire. What is the current through the solenoid?