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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 14MV potential difference.
What is the total charge of the protons that must be fired at the tumor to deposit the required energy?
Consider two inertial reference frames. while an observer in each frame measures the following quantities, which measurement made by two observers must yield the same results.
A hiker's trip consists of three segments. Path A is 8km long heading 65 degrees north of east. Path B is 7km long in a direction due east. Path C is 4.0 km long heading 313 degrees counter clockwise from east.
At t = 0, a particle leaves the origin with a velocity of 12 m/s in the positive x direction and moves in the xy plane with a constant acceleration of (-2.0i+4j) . At the instant the y coordinate of the particle is 18 m, illustrate what is the x ..
A person scuffing her feet on a wool rug on a dry day accumulates a net charge of -42 µC. How many excess electrons does she get, and by how much does her mass increase?
A skier wears a jacket filled with goose down that is 15 mm thick. Another skier wears a wool sweater that is 7.00 mm thick. Both have same surface area.
In photo like the Hubble Deep Field, we see galaxies in many different stages of their lives. In general, which galaxies are seen in the earliest (youngest) stages of their lives.
Illustrate at what horizontal distance, x, from the base of the building will the rock strike the ground? Assume the ground is level and that the side of the building is vertical. The acceleration of gravity is 9.8 m/s2 .
suppose that the engineer is at x = 0 when, at t = 0, he first spots the locomotive. Sketch x(t) curves for the locomotive and high-speed train for the cases in which a collision is just avoided and is not quite avoided.
A piece of tin has a mass of 25g and a volume of 4.3cm^3 a)what is the mass of 1 cm^3 b) what is the volume of 1g of tin c) what is the density of the tin d) what is the mass of 34cm^3 of the same type of tin e) what is the volume of 130g of the s..
A projectile is launched from a cannon at ground level at an angle of 62.0 degrees elevation and has a muzzle velocity of 481 m/s. Explain how many seconds after it is fired does it reach max height?
What work is done by the electric forc. begin from rest, a boat increases its speed to 4.00 m/s with constant acceleration. What is the boat's average speed.
What is Tension in the chain at the point where the chain is attached to the block? What is the tension of the chain midway up the chain? And find out the tension in the chain at the point where the chain is attached to the ceiling.
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