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A pulsed proton beam is fired at a target. Each pulse lasts 45.0 ns, and there are protons in each pulse, each proton having a speed of m/s. All the protons hit a circular area of , called the beam spot. What is the average pressure on the beam spot during a pulse if all the protons are absorbed by the target?
In a particluar x-ray tube, an electron approaches the target moving at 1.95 ? 108 m/s. compute the final speed of the electron
Two musicians are playing two pieces of the same instrument so that the sound produced by the first musician has a frequency of 1 kHz, What is this frequency called
Blood pressure is normally taken on the upper arm at the level of the heart, what would be the magnitude of the difference between this measurement of blood pressure and a normal blood pressure measurement
A 2.30 kg object attached to a spring moves without friction and is driven by an external force given by F = (3.00 N) sin(2pt). If the force constant of the spring is 25.0 N/m, determine the period
The cooper windings of a motor Have a resistance of 55 ohms at 20 degrees C when the motor is idle. What is the temperature in degrees Of the windings
The blue line of the hydrogen emission spectrum has a wavelength of 433.9 nm. Calculate the energy of one photon of this light
One end of an insulated metal rod is maintained at 100 and the other end is maintained at 0.00 by an ice-water mixture. Find the thermal conductivity of the metal
Electrons are accelerated through a potential difference of 39.0 V. The beam of electrons then passes through a single slit. estimate the width of the slit
Calculate the irradiance on earth due to radiation from the sun
Our solar system is about 1.34 parsecs away from planet A. An astronaut is moving away from earth toward planet A at 0.80c as measured in the earth's reference frame. What frequency of light is observed by the earthlings
Joe is moving through space at an unknown speed. His clock runs 4 minutes per hour slower than Jane's clock, How fast is Joe moving
suppose that r2/r1 = 10.0 cm and ignoring any air inside the shell, find the temperature of the outer surface of the shell.
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