How large a force is needed to open the valve
A valve in a cylinder has a cross sectional area of 11 cm2 with a pressure of 735 kPa inside the cylinder and 99 kPa outside. How large a force is needed to open the valve?
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The rod is moving in the +x-direction with a speed of 6.80m/s . The rod is in a uniform magnetic field B: (0.160T)i - (0.300T)j - (0.090T)k What is the magnitude of the emf induced in the rod?
A cannon-ball of 5 kg acts as a piston in a cylinder of 0.15 m diameter. As the gun-powder is burned a pressure of 7 MPa is created in the gas behind the ball. What is the acceleration of the ball if the cylinder (cannon) is pointing horizontally?
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