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Small research nuclear reactors, like those mostly used in universities, are often submerged in concrete structures that look like swimming pools. The water serves as a moderator of the neutrons. They often have a blue glow in the swimming pool around the reactor. What is the origin of the blue color? Hint: Look up Cerenkov radiation.
Mercury boils at a temperature of 357Degree Celcius. How then can mercury thermometers be used to measure temperatures up to 500 Deg Celcius ?
Light of wavelength 600 nm falls on a 0.49 mm wide slit and forms a diffraction pattern on a screen 1.0 m away. Find the position of the first dark band on each side of the central maximum
A proton is accelerated from rest to 0.75c. Find the relativistic momentum of the proton moving at 0.75c.
electrons move through a certain electric circuit at an average speed of 1.1 x 10-2 ms. how long in minutes does it
An electron traveling at 362 m/s enters a 9.5 T magnetic field. The angle between the velocity and the field is 56 degree. Compute the radius of the resulting circular path
A battery with a 12-V EMF has a terminal voltage of 11.4 V when it delivers 20A to the starter of a car. How much energy is dissipated per unit time by internal resistor
The femur is a bone in the leg whose minimum cross-sectional area is about 4.5 x 10-4 m2. A compression force in excess of 7.7 x 104 N will fracture this bone. Bone has a compression Young's modulus of 9.4 x 10^9 N/m2
You walk at an angle of θ=50.0* toward a planemirror. Your walking velocity has a magnitude of 0.90m/s. What is the velocity of your image relative to you(magnitude and direction)? What equation should I use to figure this problem out?
A 1.0 m length of straight wire carries a current of 22 A in a uniform magnetic field of 50mT whose direction is at an angle of 36 from the direction of the current. Find the force on the wire
A toaster uses a heating wire. When the toaster is turned on at 16 °C, the initial current is 2.13 A. What is the temperature of the heating wire
When at rest, two trains have sirens that emit a frequency of 300 Hz. The trains travel toward one another, What is the speed of the second train
In the lab frame, a point charge of +q is at rest between two streams of positive charge moving at c/3. The charge per unit length in the line of moving charges is ?C/m. In the lab frame, the electrostatic forces on charge q add up to zero, and th..
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