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Concept explainers
An estimate of the minimum velocity required for a round flat stone to skip when it hits the water is given by (Lyderic Bocquet, “The Physics of Stone Skipping,” Am. J. Phys., vol. 71, no. 2, February 2003):
where M and d are the stone mass and diameter, ρw, is the water density, C is a coefficient, θ is the tilt angle of the stone, is the incidence angle, and
g = 9.81 m/s2. Determine d if V = 0.8 m/s. (Assume that M = 0.1 kg,
C = 1, ρw=l,000kg/m3, and ß= θ= 10°.)
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Chapter 9 Solutions
EBK MATLAB: AN INTRODUCTION WITH APPLIC
- The two plates are connected across a 12 V battery of a two flat metallic plates are 0.5 centimeter away from each other along their surfaces. When a certain insulating material is placed between the plates the charge on each plate is observed to double. a. solve the dielectric constant of the material, b. solve the dielectric constant of the material when the charge on each plate is observed to increased by 25%.arrow_forward16 If permittivity E is independent of the magnitude of E, then the material is said to be because D andE are related linearly, and if it is independent of the direction of E, the material is said to be non linear, linear linear, isotropic isotropic, linear conservative, linear isotrpic, idealarrow_forwardAn air core solenoid has a length of 10 cm and a cross-sectional area of 5 cm?. If it is wound with 3000 turns of wire, determine a) the self-inductance of the solenoid, b) the energy stored when a current of 5 A flows through it and c.) the induced emf when the current is cut off after 10 ms.arrow_forward
- Electrical Engineering Using the power-angle characteristic illustrate the Critical Clearing Angle (CCA) for three different values of inertia, H, and comment on your findings. That is, how does the inertia impact on the CCAarrow_forward3) Consider a cylindrical specimen of some hypothetical metallic alloy thatit has a diameter of 10.0 mm. A pulling force of 1500 N produces aElastic reduction in diameter of 6.7 x 10-4 mm. Calculate the modulus of elasticity for this alloy, given that the Poisson coefficient is 0.35.arrow_forwardH.W Q1: In your own words, explain how the galvanometer works? Q2: In your own words, what are the cases of dynamic behavior of PMMC?arrow_forward
- 1. A thin rod of length W has uniform charge per length A. Find the electric potential (voltage) at the position P as shown. Assume V = 0 at r = o for problems on this worksheet. Use the integration variable u as defined in the diagram to write the voltage at point P. Include the limits of integration but you do not need to evaluate the integral. P Hint: break up the rod into small pieces of length du and use the point charge formula for the voltage due to the small piece dV = Kdq/r with dą and r written in terms of the givens à, L, z and integration variable u and du. W 3 du 0.arrow_forwardSolve the linear system described by a space model below:arrow_forward4) Electric field of a rod. Consider a nonconducting rod of length L with a charge q uniformly distributed along its length. We want to know the magnitude of the electric field a distance x away from one end as shown below. X L, with q evenly distributed Explain why EACH of the four answers below is WRONG. Consider symmetry, dimensions, unit analysis, behavior in limiting cases, and/or behavior at particular positions. You SHOULD NOT actually solve the problem and your answer shouldn't be because the correct answer is this. This is good practice in considering the nature of your answer... а) Е: b) E = 4πε, L(x + L) 4TE,x(x – L) c) E = d) E = 4л, (х? + L/4) 4лєрх(2х + L) 5) Electric field of a rod again--this time with calculus and a different geometry •Part a: A thin nonconducting rod of length L has charge q uniformly distributed along it as shown in Fig. 22-55 (associated with problem 32). SHOW that the magnitude of the electric field at point P (on the perpendicular bisector of the…arrow_forward
- Both the Biot-Savart and Coulomb's laws exhibit an inverse-square relationship between field and source.? True O Falsearrow_forward9. From the top of a high clff, a ball is thrown horizontally with initial speed vo. Which of the following graphs best represents the ball's kinetic energy K as a function of time t? (A) o (C) oarrow_forward16. a) How does the current pass through a conductor and capacitor? Calculate the rate of potential difference between the plates of a capacitor with 5 mF capacitance be changed to produce a displacement current of 4 A?arrow_forward
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