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Two large closely spaced parallel metal plates are uniformly and oppositely charged and the electric field between them is 7.6 x 106 N/C.
(a) Determine the charge per unit area on each plate?
(b) If the plates are now moved two times farther apart, determine the electric field between the plates?
A 0.32-kg object connected to a light spring with a force constant of 22.4 N/m oscillates on a frictionless horizontal surface. Determine the maximum speed of the object
question a sprinter starts from rest and accelerates to her maximum speed of 9.5 ms in a distance of 9.3 m.a what was
A positive lens of focal length 40 cm is placed 20 cm behind a negative lens of focal length -80 cm. The final image distance relative to the positive lens is:
When a flower petal is 4.0cm in front of a converging lens, the inverted image is half the height of the petal. What is the focal length of the lens? Please describe work/variables (eg f=focal length etc.)
A skydiver drops from a hot air balloon floating 5000 meters above the ground. What was the average vertical speed of the skydiver
A certain type of propeller blade can be modeled as a thin uniform bar 2.80m long, find the maximum angular acceleration the blade could achieve
An electron is bound in an infinite well (a box) of width 0.1nm. If the electron is initially in then n = 8 state and falls to the n = 7 state, find the wavelenght of the emitted photon
A diverging lens has a focal length of 15.0cm . For each of two objects located to the left of the lens, determine Wether the image is erect or inverted
a ball of mass m 0.20 kg strikes a wall with an initial speed of 5.0 ms and rebounds in the opposite direction with a
A nuclear power plant generates 3000 MW of heat energy from nuclear reactions in the reactor's core. What is the plant's actual efficiency
A long straight wire carries a current of 40 A in a region where a uniform external magnetic field has a 30-µT magnitude and is parallel to the current
A solid disk of mass m1 = 9.1 kg and radius R = 0.25 m is rotating with a constant angular velocity of ? = 33.0 rad/s. What average torque was exerted on the rod by the disk
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