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An air-filled parallel plate capacitor with a plate spacing of 1.20 cm has a capacitance of 5.00 ?F. The plate spacing is now doubled and a dielectric is inserted, completely filling the space between the plates. As a result the capcitance becomes 13.8 ?F. Calculate the dielectric constant of the inserted material.
a sled of mass 1 kg has an initial speed of 1.00m/s across a horizontal surface. the force of friction between the sled and surface is 0.2N. What is the speed of the sled after it ha traveled a distance of 2.00m
What is the magnitude of the potential difference between two points that are 1.15 cm and 2.99 cm from a proton? Answer in units of V.
An open container holds ice of mass 0.530 kg at a temperature of -15.7 Celsius . The mass of the container can be ignored. Heat is supplied to the container at the constant rate of 810J/minute.
Calculate the energy content of 1 kg of natural uranium assuming complete fission. Estimate an average energy per fission. Compare this to the energy in 1 kg of coal (reference all values assumed).
As part of a carnival game, a 0.578-kg ball is thrown at a stack of 19.3-cm tall, 0.423-kg objects and hits with a perfectly horizontal velocity of 12.8 m/s. What is the center of mass velocity of the tall object immediately after it is struck
During a thunderstorm, winds with a speed of 49.4 m/s blow across a flat roof with an area of 751 m2
A particle of rest mass m0 moving with a speed of 0:8c collides and sticks to a particle of rest mass 3m0 that is initially at rest. What is the kinetic energy of the initial moving particle
What is the velocity of a beam of electrons that go undeflected when passing through perpendicular electric and magnetic fields of magnitude 8.8 x 10^3 V/m and 3.5 x 10^-3T respectively
In a slide or movie projector, the film acts as the object whose image is projected on a screen. how wide will the picture be on the screen
An initially uncharged 3.53-?F capacitor and a 8.01-k? resistor are connected in series to a 1.50-V battery that has negligible internal resistance. Calculate the circuit\'s time constant in milliseconds
question1water has a specific heat capacity of 4186 jkg degc. a tank contains 500 kg of water at 10.0degc. the water is
An iron boiler of mass 222 kg contains 860 kg of water at 20°C. A heater supplies energy at the rate of 52900 kJ/h. How long does it take for the water to reach the boiling point
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