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When high-energy charged particles move through a transparent medium with a speed greater than the speed of light in that medium, a shock wave, or bow wave, of light is produced. This phenomenon is called the Cerenkov effect. When a nuclear reactor is shielded by a large pool of water, Cerenkov radiation can be seen as a blue glow in the vicinity of the reactor core due to high-speed electrons moving through the water. In a particular case, the Cerenkov radiation produces a wave front with an apex half-angle of 53.0 degree. Calculate the speed of the electrons in the water. The speed of light in water is 2.25 X 10^8 m/s. Speed of electrons in the water ________________?
A 0.250-kilogram cup at 15 °C is filled with 0.100 kg of boiling coffee. The cup and the coffee come to thermal equilibrium at 75 °C. what is the specific heat of the cup material
To focus a camera on objects at different distances, the converging lens is moved toward or away from the film, Over what distance must the lens be movable
design a crane that will sit on a boat and drop a 1meter by 1 meter by 1 meter box to pick up 10cm steel balls. we need
A man pushes a box of mass M with a force F using a stick AB of mass m and making a angle θ with the vertical. The coefficient of friction between the box and the floor is μ. Draw a clear diagram showing all the forces.
A submarine is 307 mhorizontally out from the shore and 127 m beneath the surface of the water. find the height of the building
Your friend's 0.0185 kg graduation tassel hangs on a string from his rearview mirror. Find the tension in the string holding the tassel
question two people start at the same place and walk around a circular lake in opposite directions. one has an angular
A farsighted woman breaks her current eyeglasses and is using an old pair whose refractive power is 1.990 diopters. How far is her near point from her eyes
A dog running in an open field has components of velocity vx = 2.4m/s and vy = -2.5m/s at time t1 = 11.3s . For the time interval from t1 = 11.3s to t2 = 18.0s , What is the magnitude of the dog's velocity
An engine develops 490 N m of torque at 3750 rev/min. Find the power developed by the engine
Vector A, which is directed along an x axis, is to be added to vector Bvec , which has a magnitude of 3.0 m, with a magnitude that is 5 times that of A, What is the magnitude of A
a parallel-plate capacitor has circular plates of 8.90 cm radius and 1.70 mm separation.a calculate the capacitance.b
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