Elements Of Electromagnetics
7th Edition
ISBN: 9780190698614
Author: Sadiku, Matthew N. O.
Publisher: Oxford University Press
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- There is a piston-cylinder system that undergoes a process. The total work done by the system, W, is 50 kJ, and thechange in the specific internal energy of the system, Δu, is −7 kJ/kg. We also know the total mass of the system, m, is 10kg. During the process, both the change of kinetic energy and the change of potential energy are negligible. Pleasedetermine 1) the total energy change, ΔE, in kJ; 2) the total heat transfer, Q, in kJ; and 3) judge the direction of energyflow for the heat transfer: into the system or out of the system.arrow_forwardA canister of sevoflurane, an inhaled anesthetic, is warmed to room temperature over the course of 30 minutes. As the gas warms, it pushes on a movable piston with a force of 623 mN, increasing the volume of the gas by 16 cm^3. How much work was done by the gas? A. 0.03 CJ B. 0.27 CJ C. 2.7 CJ D. 270 CJarrow_forwardA velocity of 25 km/hkm/h is equivalent to: 6.94 m/sm/s 90.0 m/sm/s 90. m/sm/s 6.9 m/sm/sarrow_forward
- If a spring force is F = 5 s N/m and the spring is compressed by s 0.5 m, the work done on a particle attached to the spring will be . (A) 0.625 N.m (B) - 0.625 N.m (C) 0.0781 N.m (D) - 0.0781 N.marrow_forwardA slingshot, which can be modeled as a spring with spring constant k = 81.9 N/m, is stretched by 22 cm with respect to its equilibrium position and used to shoot a rock with mass 0.09 kg straight up into the air. Find the speed of the rock (in m/s) when it reaches a height which is 25% of its maximum height (relative to the position at which it was shot from). Use g = 9.81 m/s?. Hint: First find the maximum height, and then find the speed when the height is 25% of that.arrow_forward
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