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To recharge an 18.0 V battery, a battery charger should move 4.39×105 C of charge from the negative terminal to the positive terminal. How much work is done with the battery charger?
A small sphere with a charge of -5.9 10-7 C is placed in a uniform electric field of magnitude 1.9 106 N/C pointing to the west. What is the magnitude and direction of the force on the sphere due to the electric field?
An alpha particle (which is a helium nucleus Q=+2e, m=6.64 X 10-27 kilogram) is emitted in a radioactive decay with KE= 5.63 MeV. Calculate what is its speed
A compound lens system consists of two converging lenses, one at x = -20.0 cm with focal length f_1= 10.0 cm, and the other at x= 20.0cm with focal length f_2 = 8.0 cm. What is the focal length of the new lens at the origin
A charged belt, 60 cm wide,travels at 40 m/s between asource of charge and a sphere. The belt carries charge into thesphere at a rate corresponding to 100 µA. Compute the surface charge densityon the belt.
A thermodynamic system is taken from state A to state B tostate C, and then back to A. What is the net work done by the system as it moves once through the cycle ABCA
A sound wave with intensity 20 mW/m2 interferes destructively with a sound wave that has an intensity of 4 mW/m2. What is the intensity of the superposition of the two
The focal length of a bi-convex lens is 10 cm. The focal length of a convex-concave thin lens is -20 cm. If placing them in parallel and in close contact, what is the compound focal length
Light of wavelength 669 nm is incident on a double slit. The angle between the central bright fringe and the second dark fringe is 4.90°. Determine the separation d of the slits
When a current flows in an aluminum wire of diameter 3.29 mm, the drift speed of the conduction electrons is 2.85 × 10-4 m/s. What is the electron current in the wire
a hydrogen atom is in its tenth excited state according to the bohr model n11. a what is the radius of the bohr orbit?
a spherical conducting shell of inner radius r1 and outer radius r2 has a charge q.a a charge q is placed at the centre
A photon is emitted when a hydrogen atom undergoes a transitionfrom the n = 5 state to the n = 3 state. Calculate the energy (in electron volts) of the emitted photon
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