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A cancer patient is undergoing radiation therapy in which protons with an energy of 1.2 MeV are incident on a 0.25 Kg tumour. (a) If the patient receives an effective dose of 1.0 rem, what is the absorbed dose? (b) How many protons are absorbed by the tumour: Assume QF ~ 1?
A 3.5 k and a 1.5 k resistor are connected in parallel and this combination is connected in series with a 1.8 k resistor. If each resistor is rated at 1/2 W, what is the highest voltage that can be applied across the whole network.
A cylinder is rolling along the ground without the slipping at 7m/s. It comes to a hill and begins going up. Assume no losses to friction, how high vertically would it go before it stops?
What will be the equilibrium temperature while a 238 block of copper at 230 is placed in a 133 aluminium calorimeter cup containing 831 of water at 16.0.
Compute the mass of a ball and speed of a puck after collision.
What is the acceleration experienced by 0 tip of the 1.50 cm long sweep second hand on your wrist watch? In M/s^2.
The distance between deer B and C is 92 m. What is distance between deer A and C.
A gas is compressed at a constant pressure of 0.800 atm from 12.00 L to 3.00 L. In the process, 380 J of energy leaves the gas by heat. (a) What is the work done on the gas? J (b) What is the change in its internal energy?
A baseball player runs 27.4meters from the batter's box to first base,overruns first base by 3.0 meters,and then returns to first base. Compared to total distance traveled by the player,the magnitude of the players total displacement from the batt..
What is the current in amperes in a wire of radius. The parallel plates in a capacitor, with a plate area of 8.70 cm2 and an air-filled separation of 3.30 mm, are charged by a 8.90 V battery.
A violinist places her finger so that the vibrating section of a 1 g/m string has a length of 40.00 cm, after that she draws her bow across it. A listener nearby in a 20 ^circ {rm C} room hears a note with a wavelength of 30 cm.
Suppose you do 457 J of work on 1.18 moles of ideal gas in a perfectly insulated container. By how much does the internal energy of this gas change.
Two spherical objects have a combined mass of 200. The gravitational attraction between them is 8.01×10-6 while their centers are 21.0 apart.
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