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A 3.04 µF capacitor is charged by a 18.0 V battery. It is disconnected from the battery and then connected to an uncharged 3.21 µF capacitor. Determine the total stored energy at the following points in time. (a) before the two capacitors are connected 4.925E-04 J (b) after they are connected _________ J (c) What is the change in energy? __________. J
A thin film of oil (n = 1.30) is located on smooth, wet pavement. When viewed perpendicular to the pavement, How thick is the oil film
Air at 25 oC blows over a heated steel plate with its surface maintained at 200 oC. Calculate the heat loss per hour from the top surface of the plate
A 3.0 kg block of silver is completely immersed in water. calculate the mass of water displaced by the silver block
The National Aeronautics and Space Administration (NASA) studies the physiological effects of large accelerations on astronauts. At what speed must the chamber move so that an astronaut is subjected to 2.48 times the acceleration due to gravity
A glass plate having parallel faces and a refractive index of 1.54 lies at the bottom of a liquid of refractive index 1.62. Compute the angle of refraction of this light in the glass
A motor has coils with a resistance of 28 and operates from a voltage of 235 V. When the motor is operating at its maximum speed, the back emf is 147 V. Find the current in the coils when the motor is first turned on
A car that weighs 13800.0 N is initially moving at a speed of 42.0 km/hr when the brakes are applied and the car is brought to a stop in 2.4 s. Find the magnitude of the force that stops the car
A capacitor with an initial potential difference of 100 V is discharged through a resistor when a switch between them is closed at t = 0. At t = 10.0 s, What is the time constant of the circuit
Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 23.0 m/s at an angle 28.0 degrees; What is the vertical component of the ball's velocity
A very long, straight solenoid with a cross-sectional area of 6.00cm squared is wound with 40 turns of wire per centimeter, What is the average induced emf in the secondary coil
Gold, which has a density of 19.32 g/cm3, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber. (a) If a sample of gold with a mass of 4.622 g, is pressed into a leaf of 3.941 µm thickness, what is the area ..
a parallel-plate capacitor has plates separated by 0.76 .part a if the electric field between the plates has a
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