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A 2.0 mm-diameter glass bead is positively charged. The potential difference between a point 2.2 mm from the bead and a point 4.5 mm from the bead is 500V What is the charge on the bead?
A hydrogen atom initially in its ground state absorbs a photon and ends up in the n=6 state. Calculate the energy of the incident photon
The sun produces energy by nuclear fusion reactions, in which matter is converted into energy. How many kilograms of matter does the sun lose each second
In a college parking lot, the number of ordinary cars is larger than the number of sport utility vehicles by 85.7%, Find the number of SUVs in the lot
An engine does 20000 J of work and rejects 6120 J of heat into a cold reservoir whose temperature is 285 K. What would be the smallest possible temperature of the hot reservoir.
A parallel plate capacitor is made of two parallel disks of metal separaded by a gap. The radius of the disk is 2.0m, the distance between the plates .25m. What is the energy stored in the capacitor
Scientists have recently shown that a sample of cocaine can be traced to its country of origin by measuring the ration of carbon-13 to nitrogen-15 (both naturally occuring, stable nuclides) in the cocaine sample.
A 18.0 kg loudspeaker is suspended 2.40m below the ceiling by two 4.10m long cables that angle outward at equal angles. What is the tension of each of the cables.
An electron is accelerated by a constant electric field of magnitude 325 N/C. (a) Find the acceleration of the electron. m/s2 (b) Use the equations of motion with constant acceleration to find the electron's speed after 9.00 10-9 s, assuming it st..
A 11.9-g mass is suspended 1.47 cm above a nonconducting flat plate, directly above an embedded charge of q. by how much will the mass be changed
A force F applied to an object of mass m1 produces the acceleration of 3.10 m/s2. The same force applied to a second object of mass m2 produces an acceleration of 1.90 m/s2.
Four charged particles are at the corners of a square of side. (Let A = 3, B = 4, and C = 5.) (a) Determine the electric field at the location of charge q.
When resting, a person has a metabolic rate of about 3.0 105 joules per hour. The person is submerged neck-deep into a tub containing 1.12 103 kg of water at 22.10° C. find the water temperature after half an hour
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