Concept explainers
High-frequency signals are often transmitted along a coaxial cable, such as the one shown in FIGURE CP3O.86. For example, the cable TV hookup coming into your home is a coaxial cable. The signal is carried on a wire of radius
a. Find an expression for the inductance per meter of a coaxial cable. To do so, consider the flux through a rectangle of length l that spans the gap between the inner and outer conductors.
b. Evaluate the inductance per meter of a cable having
Want to see the full answer?
Check out a sample textbook solutionChapter 30 Solutions
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics - Modified MasteringPhysics Access
- (a) What is the force per meter on a lightning bolt at the equator that carries 20,000 A perpendicular to Earth’s 3.0105field? (b) What is the direction of the force if the current is straight up and Earth’s field direction is due north, parallel to the ground?arrow_forwardThe terms electrostatic force and electrostatic field may sound alike. To help keep them straight, identify and write down the standard symbol and SI units for each one. Which one requires a source and a subject? Which requires only a source?arrow_forwarda) What is the magnitude of the electric force on the proton? (answer should be reduced to the highest possible power) b) What is the magnitiude of the protons acceleration? c) What is the final proton speed after travelling the 2.25cm?arrow_forward
- An electron has an initial velocity of 5.00 × 106 m/s in a uniform 2.00 × 105 -N/C electric field. The field accelerates the electron in the direction opposite to its initial velocity. (a) What is the direction of the electric field? (b) How far does the electron travel before coming to rest? (c) How long does it take theelectron to come to rest? (d) What is the electron’s velocity when it returns to its starting point?arrow_forwardb)Two similar tiny balls of massmare hung from silk threads of lengthLand carry equal chargesqas in Figure 1. Assume thatθis small enough that tanθcan be replaced by its approximate equal, sinθ. With this approximation, show that,for equilibrium, (see attached file), where x is the separation between the balls.arrow_forward(a) What is the magnitude of the acceleration of an electron in a uniform electric field of 1.85 ✕ 106 N/C?_________m/s2(b) How long would it take for the electron, starting from rest, to attain one-tenth the speed of light? ________s(c) How far would it travel in that time? (Use Newtonian mechanics.) _________m (please include units so that I can follow it easier)arrow_forward
- Inside a cathode ray tube, an electron is in the presence of a uniform electric field with a magnitude of 285 N/C. a) What is the magnitude of the acceleration of the electron (in m/s2)? b) The electron is initially at rest. What is its speed (in m/s) after 1.25 ✕ 10−8 s?arrow_forwardAn electron has an initial velocity of 6.00 ✕ 106 m/s in a uniform 9.00 ✕ 105 N/C strength electric field. The field accelerates the electron in the direction opposite to its initial velocity. (a) What is the direction of the electric field? (b) How far (in m) does the electron travel before coming to rest? ? m (c) How long (in s) does it take the electron to come to rest? ? s (d) What is the electron's speed (in m/s) when it returns to its starting point? ? m/sarrow_forwardWhich word or name has the same symmetry as the letters in the name ZAK? (Explain your answer.) a. NUT b. SUE c. CAL d. BIGarrow_forward
- A proton is traveling horizontally to the right at 5.00×106 m/s . A) Find the magnitude of the weakest electric field that can bring the proton uniformly to rest over a distance of 3.40 cm. B) How much time does it take the proton to stop after entering the field? C) What minimum field magnitude would be needed to stop an electron under the conditions of part A? What is the direction of the field?arrow_forward(a)find the net force that the southern hemisphere of a uniformly charged solid sphere exert on the northern hemisphere.express your answer in terms of the radius rand and total charge Q.arrow_forwardg) Calculate the Net Electric force on q6 due to all other charges. (Calculate X and Y component of the force)arrow_forward
- Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning