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A 1.9-pF parallel plate capacitor has a potential difference of 10.0 V across it. The plates are 1.1 mm apart, and the space between them contains air.
a) What is the charge on the capacitor?
b) How much energy is stored in the capacitor?
c) What is the area of the plates?
d) What would the capacitance of this capacitor be if the space between the plates were filled with polystyrene (? = 2.6)?
Two cylindrical rods are identical, except that one has a thermal conductivity k1 and the other has a thermal conductivity k2. they are placed between two walls that are maintained at different temperatures TW (warmer) and TC (cooler).
A compound microscope has an objective lens of focal length 15.0 mm and an eyepiece that gives an angular magnification of 5.00 for a final image at infinity, What is the total magnification of the microscope
A guitar string is 90cm long and has a mass of 3.6g from the bridge to support post (L) is 60cm and the string is under the tension of 560. What are the frequencies of fundamental and first two overtones.
A device used in radiation therapy for cancer contains 6.30×10-1 g of cobalt 2760Co (59.9333819 u). Determine the activity of the radioactive material
A 340 g air track cart traveling at 1.25 m/s collides elastically with the 300 g cart traveling in the opposite direction at 1.33m/s. What is the speed of the 300g cart after collision.
what is the maximum mass it can support in freshwater. find the maximum height of the projectile is equal to its horizontal range.
Flight to Mars. To send a satellite from Earth to Mars, a rocket must accelerate the satellite until it is in the correct elliptical orbit around the sun. What is the semimajor axis of the satellite's orbit
A 2.31?102g piece of copper at a temperature of 401.K and a 1.07?102g piece of aluminum at a temperature of 2.17?102K, What is the equilibrium temperature of the mixture
A starship has a mass of 8,500kg. It is moved by Yoda, 3.2m vertically upward and 14.8m horizontally toward Yoda, Determine the amount of force used to lift the ship
Most of the motion generated by joints in the human body are examples of levers. An example of a third class lever is the forearm, what force is exerted by the biceps muscle
Although an ideal voltmeter has an infinite internal resistance, this theoretical ideal is usually not met in practice. The voltmeter has an internal resistance of 8 x 10^9 Ohms and is used to measure the voltage across the resistor R2.
An electron enters a magnetic field with a speed of 1.41x 10^6 m/s heading north and undergoes a semicircular path towards the east with a diameter of 10cm. find the time required to complete this semicircle
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