Concept explainers
Exploding shoes. The rain-soaked shoes of a person may explode if ground current from nearby lightning vaporizes the water. The sudden conversion of water to water vapor causes a dramatic expansion that can rip apart shoes. Water has density 1000 kg/m3 and requires 2256 kJ/kg to be vaporized. If horizontal current lasts 2.00 ms and encounters water with resistivity 150 Ω m, length 12.0 cm. and vertical cross-sectional area 15 × 10−5 m2 what average current is required to vaporize the water?
Want to see the full answer?
Check out a sample textbook solutionChapter 26 Solutions
FUNDAMENTALS OF PHYSICS (LLF)+WILEYPLUS
Additional Science Textbook Solutions
Chemistry: The Central Science (14th Edition)
Concepts of Genetics (12th Edition)
Chemistry: A Molecular Approach (4th Edition)
Fundamentals Of Thermodynamics
Principles of Anatomy and Physiology
Human Anatomy & Physiology (2nd Edition)
- A particle accelerator produces a beam with a radius of 1.25 mm with a current of 2.00 mA. Each proton has a kinetic energy of 10.00 MeV. (a) What is the velocity of the protons? (b) What is the number (n) of protons per unit volume? (b) How many electrons pass a cross sectional area each second?arrow_forwardA large cyclotron directs a beam of He ++ nuclei onto a target with a beam current of 0.250 mA. (a) How many He++ nuclei per second is this? (b) How long does it take for 1.00 C to strike the target? (c) How long before 1.00 mol of He++ nuclei strike the target?arrow_forwardTaking R = 1.00 k and = 250 V in Figure P21.49, determine the direction and magnitude of the current in the horizontal wire between a and e. Figure P21.49arrow_forward
- A 0.900-V potential difference is maintained across a 1.50-m length of tungsten wire that has a cross-sectional area of 0.600 mm2. What is the current in the wire?arrow_forwardAn electric eel generates electric currents through its highly specialized Hunters organ, in which thousands of disk-shaped cells called electrocytes are lined up in series, very much in the same way batteries are lined up inside a flashlight. When activated, each electrocyte can maintain a potential difference of about 150 mV at a current of 1.0 A for about 2.0 ms. Suppose a grown electric eel has 4.0 103 electrocytes and can deliver up to 3.00 102 shocks in rapid series over about 1.0 s. (a) What maximum electrical power can an electric eel generate? (b) Approximately how much energy does it release in one shock? (c) How high would a mass of 1.0 kg have to be lifted so that its gravitational potential energy equals the energy released in 3.00 102 such shocks?arrow_forwardIf the current carried by a conductor is doubled, what happens to (a) the charge carrier density, (b) the current density, (c) the electron drift velocity, and (d) the average time interval between collisions?arrow_forward
- A high voltage transmission line of diameter 2.55 cm and length 3.42167 km carries a steady current of 2 x103 A. If the conductor is copper with a free charge density of 7 x 1028 electrons/m3, how long (in seconds ) does it take one electron to travel the full length of the cable? (e = 1.6 x 10−19 C).For this problem use scientific/exponential notation to represent your answer.arrow_forwardFind the resistance between the inner and the outer curved surfaces of the block shown below, where the material is Silver o = 6.17 x 10°S/m. If the same current crosses both inner and outer curved surfaces J = 1ô A/m?. %3D Assume: Pa = 2 cm, po = 6 cm, ø = 20°. and z = 5 cm 113 Po P. O a. B.16 un O b. 6.12 un Oc 30.606 u Od. 4.59 u 1030arrow_forward6. A copper wire of cross-sectional area 2.0 x 10-6 m2 and length 4.0 m has a current of 2.0 A uniformly distributed across the area. (a) What is the magnitude of the electric field along the wire? (b) How much electrical energy is transferred to thermal energy in 30 minutes?arrow_forward
- 1. The electric field of the material between two coaxial cables of radius 0.525 cm and 0.675 cm is given as E= (2.85 V•m) / r3. If the conductivity of the material is 5 x 1010 S/m, what is the current density in the material? 2. A cell has a terminal voltage of 50.0 V for a current of 10.0 A, and 54 V for a current of 6.0 A. Find the electromotive force and internal resistance of the cell.arrow_forward1. The electric field of the material between two coaxial cables of radius 0.525 cm and 0.675 cm is given as E= (2.85 V•m) / r3. If the conductivity of the material is 5 x 1010 S/m, what is the current density in the material?arrow_forward1. The current passing through a conductor is described by I(t) = I。 e¯t/¹. If lo 2A and T = 0.5 s, how many electrons flow through the conductor during the first 3 seconds? Take e 1.6 × 10-¹⁹ C.arrow_forward
- College PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax CollegePrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
- College PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningPhysics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning