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In proton-beam therapy, a high-energy beam of protons is fired at a tumor. The protons come to rest in the tumor, depositing their kinetic energy and breaking apart the tumor's DNA, thus killing its cells. For one patient, it is desired that 0.10 J of proton energy be deposited in a tumor. To create the proton beam, the protons are accelerated from rest through a 10MV potential difference. What is the total charge of protons that must be fired at the tumor to deposit the required energy?
Suppose a monatomic ideal gas is contained within a verticalcylinder that is fitted with a movable piston. The piston isfrictionless and has a negligible mass. Through what distance does the piston drop
Determine the current I flowing through a solenoid, if the magnetic flux inside its core is found to be 2.60 multiply.gif 10-4 Wb.
What is the net upward force on an airplane wing of area 20.0 m2 if the speed of air flow is 221 m/s across the top of the wing and 206 m/s across the bottom
To estimate the size of the moon, a person holds a round pencil of diameter 0.70 cm. When the pencil is 77 cm in front of his eye, What is the angle subtended by the moon
Light from a 554-nm monochromatic source is incident upon the surface of fused quartz (n = 1.56) at an angle of 22 °
A Thermopane window of area 6.8 m2 is constructed of two layers of glass, each 5.4mm thick and separated by an air space of 2 mm. If the inside is at 12?C and the outside is at ?36?C, how much heat is lost through the window? The thermal conductivity..
a 47.0-kg boy riding a 1.80-kg skateboard at a velocity of 5.40 ms across a level sidewalk jumps forward to leap over a
the electric potential at a position located a distance of 22.8 mm from a positive point charge of 8.00times10-9c and
The amplitude of a lightly damped oscillator decreases by 4.9% during each cycle. What percentage of the mechanical energy of the oscillator is lost in each cycle
A car initially traveling at 27.9 m/s undergoes a constant negative acceleration of magnitude 1.70 m/s2 after its brakes are applied. What is the angular speed of the wheels when the car has traveled half the total distance
You work in a materials testing lab and your boss tells you to increase the temperature of a sample by 34.9C . The only thermometer you can find at your workbench reads in degrees Fahrenheit. If the initial temperature of the sample is 75.0F, what..
A solid block is attached to a spring scale. When the block is suspended in air, the scale reads 22.2N ; when it is completely immersed in water, What is the volume of the block
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