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A scintillation spectrometer consists of an anthracene crystal and a 10-stage photomultiplier tube. The crystal yields about 15 photons for each 1 keV of energy dissipated. The photo-cathode of the photomultiplier tube generates one photo-electron for every 10 photons striking it, and each dynode produces 3 secondary electrons. Estimate the pulse height observed at the output of the spectrometer if a 1 MeV electron deposits its energy in the crystal. The capacitance of the output circuit is 1.2 × 10-10 F.
a 60.0 n force is applied at an angle of 35 degrees to a 7.00 kg block pressed against a rough vertical wall, What is the coeffiant of kinetic friction in the vertical direction
Some thermometers indicate temperature by means of the thermal expansion of alcohol. by what percent does the volume change if the temperature changes by 9 F
Two flexible balls rolling along a frictionless horizontal surface collide with each other. The Larger of the balls weighs 50g and the smaller weighs 30g. find the acceleration of the center of mass of the smaller ball
In a refrigerator, heat is transferred from a colder area (theinside of the refrigerator) to a warmer area (the air outside ofthe refrigerator). Given what you know about internal energy,explain how this is possible.
A fighter jet has a pilot of mass of 75kg; he enters avertical loop of radius 500m. If the jet has a speed of 120m/s atthe point entering the loop. What forc is exerted on the pilot by the seat of the jet atthe bottom of the loop
Imagine two 2.5g bags of protons, one at the earth's north pole and the other at the south pole. How many protons are in each bag
A 2.71kg block traveling right at 3.46m/s collides with a 5.80kgblock traveling left at 1.93m/s. What is the speed and direction of the 5.80kg block after the collision? Was energy lost or gained in the collision?
A small object is placed to the left of a convex lens and on the optical axis. compute the position of the image formed by the lens
A barbell consists of two small balls, each with mass 600 grams (0.6 kg), at the ends of a very low mass rod of length d = 20 cm (0.2 m). The center of the barbell is mounted on the end of a low mass rigid rod of length b = 0.3 m, and this rod rot..
a stationary billiard ball mass 0.17 kg is struck by an identical ball moving at 3.0 ms. after the collision the second
Explain the reason for the bias observed in responses to the survey. Do you expect bias in the same direction in most surveys about seat belt use?
A series RCL circuit driven at angular frequency %u03C9 = 505 rad/s has a capacitive reactance XC = 851 %u03A9, What is the total impedance
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