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An empty parallel plate capacitor is connected between the terminals of a 18.1-V battery and charges up. The capacitor is then disconnected from the battery, and the spacing between the capacitor plates is doubled. As a result of this change, what is the new voltage between the plates of the capacitor?
A certain lightbulb has a tungsten filament with a resistance of 19.1 ? when at 20.0°C and 139 ? when hot, Find the temperature of the hot filament
Steam enters a turbine in a Rankine cycle power plant at 200 psia and 500 degrees F. Calculate the isentropic thermal efficiency if the condenser pressure is 14.7 psia
Stress on a Mountaineer's Rope. A nylon rope used by mountaineers elongates 1.60 m under the weight of a 65.0-kg climber. If the rope is 55.0 m in length and 7.0 mm in diameter,
In the absence of air resistance, a projectile is launched from and returns to ground level. It follows a trajectory similar to that , What is the new range
Suppose an astronaut has landed on Mars. Fully equipped, the astronaut has a mass of 125 kg, What is the acceleration due to gravity on Mars
The pressure on 200 g of nickel is increased from zero pressure to 500 atm. Calculate the work done on the material
A 3000 kg lunar lander is in orbit 50 km above the surface of the moon. how much work must the thrusters do
A 36g glass thermometer reads 20.6C before it is placed in 104mL of water. What is the original temperature of the water
A particle of mass M is subjected to a force F(t) = kte-alphat, where k is a constant and alpha = 0.5 s-1. If the particle is initially at rest, calculate the position, velocity and acceleration as a function of time.
An air parcel occupied by an ideal gas (T1 = 255 K, V1 = 1500m3, m1 = 1680 kg) collides and mixes with a second air parcel occupied by a second ideal gas (T2 = 280 K, V2 = 1200 m3, m2 = 1392 kg). Assuming the specific heat capacities of the gases ..
catapult fires an 800-kg rock with an initial velocity of 100 msat a 40deg angle from ground. what is the magnitude of
A 0.43-kg metal sphere oscillates at the end of a vertical spring. As the spring stretches from 0.12 m to 0.23 m, What is the spring constant of the spring
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