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A 20 micro F capacitor is connected to a 60 V battery and becomes fully charged. The battery is removed and a slab of dielectric that completely fills the space between the plates is inserted. If the dielectric has a dielectric constant of 6 what is the voltage across the capacitor's plates after the slab is inserted?
A guitar string is 92 cm long and has a mass of 3.8 g. From the bridge to the support post (= L) is 63 cm, What are the frequencies of the fundamental and first two overtones
The far point of a nearsighted person is 5.0 m from her eyes, and she wears contacts that enable her to see distant objects clearly. How high is the image formed by the contacts
A 2kg ball is rolling East (without slipping) down a hill that makes an angle of 30° with the horizontal. find the net acceleration at the instant the ball is kicked
A battery in a circuit has an emf of 8.8 V. The only other component in the circuit is a resistor. 4.4 A of current flows in the circuit. What is the potential difference across the battery
A balloon is filled with 5.45 liters of helium at a pressure of 1.25 atm and a temperature of 29.5° C. Find the mass of the helium
A golf ball with a coefficient of restitution of 0.78 is tossed horizontally at 0.9 m/s from a height 1.5 m above the level ground. What is the maximum height of the first bounce of the golf ball
You lower a weight of metal in a beaker filled with water standing on a scale. When metal weight hangs above the water weighs 179.6 grams.
If air drag is negligibly small, how fast is sequoia cone moving while it reaches the ground if it dropped from the top of a 114 tree.
A hollow sphere of radius 0.30 m, with rotational inertia I = 0.098 kg m2 about a line through its center of mass, rolls without slipping up a surface inclined at 27° to the horizontal. What is the speed of its center of mass now
In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.06 × 106 m/s, Find the centripetal acceleration of the electron
At a constant speed of 55 km/h , an automobile travels 600m along a straight highway that is inclined 5.0 degrees to the horizontal. What is the cars vertical velocity magnitude
A wheel is rotating about an axis that is in the z-direction. The angular velocity is w = ?6.00 rad/s at t = 0, What is the angular displacement (change in angle) of the wheel at t = 7.00s
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