Sunday
December 8, 2013

# Posts by pat

Total # Posts: 586

Physics
Before a nuclear reaction, there is 0.01000 kg of uranium. After the nuclear reaction, there is 0.00950 kg of uranium. How much energy was released? (h = 6.63 × 1034 Js)

Physics
Two objects are near a bar magnet. One is about 1 cm away, while the other is 6 cm away. Compare and contrast the magnetic force that affects each object. What do they want me to do?

Physics
The minimum frequency for the photoelectric effect of a zinc plate is 9.7 × 1014 Hz. What will be the kinetic energy of an ejected electron when a photon with a wavelength 200 nm (2.00 × 10 7 m) strikes it?

Honors Physics Question
Two objects are near a bar magnet. One is about 1 cm away, while the other is 6 cm away. Compare and contrast the magnetic force that affects each object. What do they want me to do?

PHYSICS
A coil with an area of 0.10 m2 is in a magnetic field of 0.20 T perpendicular to its area. It is flipped through 180° so that the part that was up is down. The flip takes 1.0 s. Estimate the average induced emf between the ends of the coil while it is being flipped. What f...

PHYSICS
A straight 1.2 m length iron rod is moved at 10 m/s through the earth's magnetic field at a location where it has magnitude 1.0 × 105 T. What is the magnitude of the induced emf between one end of the wire and the other end? What formula do I use?

physics
A wire loop has an area of 0.12 m2, and the magnetic field through it increases from 0 to 0.20 T in 0.30 s. What is the induced emf in the loop?

Physics
According to Boyle's law, the volume V of a gas at a constant temperature varies inversely with the pressure P. When the volume of a certain gas is 125 cubic meters, the pressure is 20 psi (pounds per square inch). If the volume of gas is increased to 400 cubic meters, the...

physics
current through a device is 0.30 A, and the resistance in the device is 40 Ù. How many 1.5 V batteries are required to run the device

Physics
each resistor in the circuit shown is 5.0 Ù, and the battery is 12.0 V, what does the second ammeter (A2) read?

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