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A metal surface has a photoelectric cut-off wavelength of 325.6 nm. It is illuminated with light of 259.8nm. What is the stopping potenetial?
The springs of a 1600 kg car compress 5.0 mm when its 65 kg driver gets into the driver's seat. If the car goes over a bump, what would be frequency of vibrations.
A sphere, a solid cylinder and a thin-walled hollow cylinder all have the same mass and radius. Which one reaches the bottom of the incline first
block A (mass 2.28 kg) rests on a tabletop. It is connected by a horizontal cord passing over a light, frictionless pulley to a hanging block B (mass 2.57 kg ), evaluate the tension in the cord
A particle of charge +15 µC and mass 2.00 10-5 kg is released from rest in a region where there is a constant electric field of +280 N/C
A 60 gram iron at 60o C is dropped into 200 gram of water at 20o C, What is the final equalibrium temperature of the system
The armature of an arc generator has 200 turns. Each turn is a rectangular loop with a cross section area of 0.02m^2. What is the magnetic field strength
consider sphere of diamer 1.0 cm. it has a total charge of q-5uc. note u mua how many excess electrons make up this
What is the energy density. Find out the lowest frequency that permits standing waves in both strings with a node at the junction. The standing wave pattern in each string may have a different number of loops.
Two charges, qA and qB, are divided by a distance, d, and exert a force, F, on each other. Analyze Coulomb's law and answer the following questions.
A 3.7cm x 5.8cm rectangle lies in the xz-plane, What is the electric flux through the rectangle if E = (80i + 70j) N/C
An elastic cord is 64 cm long when a weight of 56 N hangs from it and is 69 cm long when a weight of 83 N hangs from it. What is the "spring" constant of this elastic cord.
A converging lens(f1=4 cm) is located 8 cm to the left of a diverging lens (f2= -2 cm). Find the final image formed by the 2 lens system
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