University Physics with Modern Physics (14th Edition)
14th Edition
ISBN: 9780321973610
Author: Hugh D. Young, Roger A. Freedman
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 30, Problem 30.45P
Solar Magnetic Energy. Magnetic fields within a sunspot can be as strong as 0.4 T. (By comparison, the earth’s magnetic field is about 1/10,000 as strong.) Sunspots can be as large as 25,000 km in radius. The material in a sunspot has a density of about 3 × 10−4 kg/m3. Assume μ for the sunspot material is μ0. If 100% of the magnetic-field energy stored in a sunspot could be used to eject the sunspot’s material away from the sun’s surface, at what speed would that material be ejected? Compare to the sun’s escape speed, which is about 6 × 105 m/s. (Hint: Calculate the kinetic energy the magnetic field could supply to 1 m3 of sunspot material.)
Expert Solution & Answer
Trending nowThis is a popular solution!
Learn your wayIncludes step-by-step video
schedule05:22
Students have asked these similar questions
Which of the following statements are correct about different unit combinations?
There is more than one correct answer; points are deducted for wrong answers.
A
The units for thermal energy are the same as those for kinetic energy.
B
The force due to gravity is measured in different units than the electrostatic force.
C
Joules is the same as Coulombs times Volts.
D
Magnetic field can be measured in Volts per meter,
E
Kinetic energy uses different units than other forms of energy.
F
The units for force times distance ("Work") are the same as the units for momentum.
G
The units for momentum times units for velocity some out the same as units for electrical energy.
H
Ohms are equivalent to Watts per {Ampere squared}.
I
Momentum has the same untis as speed.
Suppose a battery operates a 2.25 W electric clock for 19.5 months.
1. What is the available energy content, in joules, of the battery?
2. How many years can a battery that supplies 7.75 × 104 J run a pocket calculator that consumes energy at the rate of 1.05 × 10-3 W?
pps51 please dont copy existing answers or i will dislike your answer thanks
Chapter 30 Solutions
University Physics with Modern Physics (14th Edition)
Ch. 30.1 - Consider the Tesla coil described in Example 30.1....Ch. 30.2 - Prob. 30.2TYUCh. 30.3 - Prob. 30.3TYUCh. 30.4 - Prob. 30.4TYUCh. 30.5 - Prob. 30.5TYUCh. 30.6 - An L-R-C series circuit includes a 2.0- resistor....Ch. 30 - In an electric trolley or bus system, the vehicles...Ch. 30 - From Eq. (30.5) 1 H = 1 Wb/A. and from Eqs. (30.4)...Ch. 30 - Prob. 30.3DQCh. 30 - Prob. 30.4DQ
Ch. 30 - Prob. 30.5DQCh. 30 - Two closely wound circular coils have the same...Ch. 30 - Prob. 30.7DQCh. 30 - For the same magnetic field strength B, is the...Ch. 30 - Prob. 30.9DQCh. 30 - A Differentiating Circuit. The current in a...Ch. 30 - In Section 30.5 Kirchhoffs loop rule is applied to...Ch. 30 - Prob. 30.12DQCh. 30 - Prob. 30.13DQCh. 30 - In the R-L circuit shown in Fig. 30.11, is the...Ch. 30 - Prob. 30.15DQCh. 30 - In an L-R-C series circuit, what criteria could be...Ch. 30 - Prob. 30.1ECh. 30 - Prob. 30.2ECh. 30 - Prob. 30.3ECh. 30 - Prob. 30.4ECh. 30 - Prob. 30.5ECh. 30 - Prob. 30.6ECh. 30 - A 2.50-mH toroidal solenoid has an average radius...Ch. 30 - Prob. 30.8ECh. 30 - Prob. 30.9ECh. 30 - Prob. 30.10ECh. 30 - Prob. 30.11ECh. 30 - Prob. 30.12ECh. 30 - Prob. 30.13ECh. 30 - A long, straight solenoid has 800 turns. When the...Ch. 30 - Prob. 30.15ECh. 30 - Prob. 30.16ECh. 30 - Prob. 30.17ECh. 30 - Prob. 30.18ECh. 30 - Prob. 30.19ECh. 30 - Prob. 30.20ECh. 30 - In a proton accelerator used in elementary...Ch. 30 - It is proposed to store l.00 kWh = 3.60 106J of...Ch. 30 - Prob. 30.23ECh. 30 - Prob. 30.24ECh. 30 - Prob. 30.25ECh. 30 - In Fig. 30.11, switch S1 is closcd while switch S2...Ch. 30 - In Fig. 30.11, suppose that = 60.0 V, R = 240 ,...Ch. 30 - Prob. 30.28ECh. 30 - Prob. 30.29ECh. 30 - Prob. 30.30ECh. 30 - In an L-C circuit. L = 85.0 mH and C = 3.20F....Ch. 30 - Prob. 30.32ECh. 30 - A 7.50-nF capacitor is charged up to 12.0 V, then...Ch. 30 - Prob. 30.34ECh. 30 - Prob. 30.35ECh. 30 - A Radio Tuning Circuit. The minimum capacitance of...Ch. 30 - An L-C circuit containing an 80.0-mH inductor and...Ch. 30 - An L-R-C series circuit has L = 0.600 H and C =...Ch. 30 - Prob. 30.39ECh. 30 - An L-R-C series circuit has L = 0.400 H, C = 7.00...Ch. 30 - Prob. 30.41ECh. 30 - Prob. 30.42PCh. 30 - Prob. 30.43PCh. 30 - Prob. 30.44PCh. 30 - Solar Magnetic Energy. Magnetic fields within a...Ch. 30 - CP CALC A Coaxial Cable. A small solid conductor...Ch. 30 - Prob. 30.47PCh. 30 - CALC Consider the circuit in Fig. 30.11 with both...Ch. 30 - Prob. 30.49PCh. 30 - Prob. 30.50PCh. 30 - Prob. 30.51PCh. 30 - Prob. 30.52PCh. 30 - Prob. 30.53PCh. 30 - A 6.40-nF capacitor is charged to 24.0 V and then...Ch. 30 - An L-C circuit consists of a 60.0-mH inductor and...Ch. 30 - A charged capacitor with C = 590 F is connected in...Ch. 30 - CP In the circuit shown in Fig. P30.57, the switch...Ch. 30 - Prob. 30.58PCh. 30 - Prob. 30.59PCh. 30 - Prob. 30.60PCh. 30 - Prob. 30.61PCh. 30 - Prob. 30.62PCh. 30 - Prob. 30.63PCh. 30 - After the current in the circuit of Fig. P30.63...Ch. 30 - CP In the circuit shown in Fig. P30.65, switch S...Ch. 30 - Prob. 30.66PCh. 30 - Prob. 30.67PCh. 30 - Prob. 30.68PCh. 30 - Prob. 30.69PCh. 30 - CP A Volume Gauge. A tank containing a liquid has...Ch. 30 - Prob. 30.71CPCh. 30 - BIO QUENCHING AN MRI MAGNET. Magnets carrying very...Ch. 30 - BIO QUENCHING AN MRI MAGNET. Magnets carrying very...Ch. 30 - BIO QUENCHING AN MRI MAGNET. Magnets carrying very...Ch. 30 - BIO QUENCHING AN MRI MAGNET. Magnets carrying very...
Additional Science Textbook Solutions
Find more solutions based on key concepts
Suppose a Carnot refrigerator operates between Tc and Th . Calculate the amount of work required to extract 1.0...
University Physics Volume 2
Choose the best answer to each of the following. Explain your reasoning. The first gravitational waves that wer...
Cosmic Perspective Fundamentals
The pV-diagram of the Carnot cycle.
Sears And Zemansky's University Physics With Modern Physics
A 15-kg sled is pulled across a horizontal, snow-covered surface by a force appiled to a rope at 30 degrees wit...
University Physics Volume 1
3. What is free-fall, and why does it make you weightless? Briefly describe why astronauts are weightless in th...
The Cosmic Perspective
What gas molecules are primarily responsible for the absorption of each of the following types of light in our ...
Lecture- Tutorials for Introductory Astronomy
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
- If the temperature of the surface of the object is 568.1 °F , then calculate its value in K. O a. 606.39 O b. 499.18 O c. 570.83 O d. 24.83 A magnetic field of 7.1 T passes through a single loop square coil of side length 4.4 x 10-2 m which makes 46.8° angle with the area vector of the coil. Find the magnetic flux associated with the coil in Wb/m²? O a. 0.940951 O b. 0.013746 O c. 0.029546 O d. 0.009410arrow_forwardIn 2014 the Netherlands installed the world’s first solar bike path. Let’s compute the cost of mitigation relative to electricity from coal. Of course, the sidewalk probably wasn’t intended to be a cost-effective electricity option. It's designed for qualitative rather than quantitative value, to raise awareness. However, there are real proposals to scale up this kind of technology to large numbers of sidewalks and roadways, so cost analysis is relevant. The project cost $3.75 million for ~30kW of installed capacity (based on typical 150W/m2 solar panels). Assume a CCF of 9%, and a utilization of 11% (probably generous for solar panels flat on the ground in the Netherlands). You may ignore all other costs. Part 1. What is the levelized cost of electricity from the solar sidewalk? $/kWh Part 2. What is the cost of mitigation (in $/tCO2) relative to coal electricity at $0.09/kWh and 0.9 kg CO2/kWh. You may assume the solar sidewalk causes 0 kg CO2 emissions/kWharrow_forwardQuestion 7: Certain areas in Arizona, Nevada, California and Texas can have up to 4000 sunny hours a year. The fact that these vast lands are less populated and agriculturally not suitable makes them ideal for solar power plants. Though most commercial solar panels have efficiencies from 15% to 20%, researchers have now developed solar cells with efficiencies approaching 50%. If you are asked to plant a solar energy system in these areas using the newest technology, how much land do you need to produce enough energy for the US. Make the conservative assumptions that the average light energy landing to the Earth' surface is 1.0 cal/(cm2 min). An estimate for the US energy consumption by major sources is given below. U.S. primary energy consumption by major sources, 1950-2019 quadrillion British thermal units 110 100 90 80 70 60 50 40 30 20 10 1950 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010 2015 renewables nuclear petroleum natural gas coalarrow_forward
- A:17 A exam.ptuk.edu.ps على فيزياء عامه 2 نظري طولكرم Question 21 Not yet answered Marked out of 2.00 P Flag question A wire of variable cross-section is given below. The relation between the drift speeds on the two cross-sections 1 and 2 is Select one: a. V12=2Vd1 b. 9V42=Vd1 c. Va2=Va1 d. 3V42=2Vd1 e. 3V12=Vd1 Previous page Next page الامتحان النصفي Jump to... Return to: General )arrow_forwardyou are standing 2.5 m from a 150-W lightbulb. If the pupil of your eye is a circle 5.0 mm diameter, how much energy enters your eye per second? (assume 5.0% of the lightbulb's power is converted to light)arrow_forwardA closed curve encircles several conductors. The line integral around this curve Express your answer in amperes. IS $B.dl 3.55x10 4 T.m. A Submit Request Answer Part B If you were to integrate around the curve in the opposite direction, what would be the value of the line integral? Express your answer in tesla-meters. ΑΣΦ 3.55 10 4 T.m Submit Previous Answers Request Answer X Incorrect; Try Again; 9 attempts remaining Check your signs.arrow_forward
- Laboratory scientists have created the electric and magnetic fields shown in the figure below. These fields are also seen by scientists that zoom past in a rocket traveling in the x-direction at 1.0×106 m/s. Assume that B = 0.58 T and E = 1.2×106 V/m. QUESTION: According to the rocket scientists, what angle does the electric field make with the axis of the rocket? Express your answer using two significant figures.arrow_forwardQ1 Match the physical situation with the Maxwell's equation that would be useful in analyzing the situation: (a) Gauss's law 1. Find the magnetic field inside a current-carrying coaxial cable. (b) Gauss's law for 2. Predict what an AC voltmeter reads magnetism whose leads encircle a coil. (c) Faraday's law 3. Find the amount of charge inside a box. (d) law Ampere-Maxwell 4. Relate the magnetic flux on one face of a cube to the magnetic flux on the other faces.arrow_forwardA. What are force and energy? Explain why automobiles have seat belts, air bags, and crumple zones as safety features. B. Explain the connection between electricity and magnetism. What are two medical applications of this connection?arrow_forward
- reaches the ground with an intensity of about 1.0kW/m2 . A sunbather has a body surface area of 0.8 m2 facing the sun while reclining on a beach chair on a clear day. (a) how much energy from direct sunlight reaches the sunbather’s skin per second? (b) What pressure does the sunlight exert if it is absorbed?arrow_forwardIn a particular city, electrical energy costs $0.13 per kilowatt-hour. (Round your answers, in dollars, to at least two decimal places.) (a) How much does it cost to operate an old-style incandescent 40.0-W light bulb continuously for 24 hours? $ (b) A modern LED light bulb that emits as much visible light as a 40.0-W incandescent only draws 4.50 W of power. How much does it cost to operate this bulb for 24 hours? $ (c) A particular electric oven requires a potential difference of 220 V and draws 20.0 A of current when operating. How much does it cost to operate the oven for 4.30 hours? $arrow_forwardThe image attached is a neat copy of a photo of an electricity meter for a domestic solar array. The display shows the energy we sold to the electricity company on a winter's day. Each box is 100 W high and 1 hr wide. At the radius of the earth's orbit, the intensity of sunlight is I=1.4 kW.m–2 . (This means that 1.4 kW.m–2 passes through 1 square metre at right angles to the sun's rays.) The solar array in the previous question consists of 10 panels, each with area A=1.6 m2 . Under optimal conditions - with the sun at right angles to the array and no clouds in the sky - the array produces Pout=2.3 kW . What is the efficiency of the array? Power out/power in = _____ %.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Magnets and Magnetic Fields; Author: Professor Dave explains;https://www.youtube.com/watch?v=IgtIdttfGVw;License: Standard YouTube License, CC-BY