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To destroy a cancerous tumor, a dose of gamma radiation with a total energy of 2.11 J is to be delivered in 29.0 days from implanted sealed capsules containing palladium-103. Assume this isotope has a half-life of 17.0 d and emits gamma rays of energy 21.0 keV, which are entirely absorbed within the tumor. (Enter your answer using one of the following formats: 1.2e-3 for 0.0012 and 1.20e+2 for 120.)
(a) Find the initial activity of the set of capsules.
(b) Find the total mass of radioactive palladium that these "seeds" should contain.
If the surface charge density on the surface of a conductor is 10 mC/ m2, what is the electric flux density just above its surface?
A parallel-plate capacitor with circular plates is beingcharged. Consider a circular loop centered on teh central axis andlocated between the plates. what is the displacement current between the plates
A 17cm length of 0.25mm diameter nichrome wire is welded into a circular loop. What is the induced current in the loop
When an automobile moves by constant speed down a highway, most of the power developed by the engine is utilized to compensate for the mechanical energy loss due to frictional forces exerted on the car with the air and the road.
A 4.00 kg fish is swimming at m/s to the right. He swallows a 1.60 kg fish swimming toward him at 3.60 m/s. find the magnitude of the velocity of the larger fish
Ultrasonic acoustic waves are diffracted by a pair of parallel slits 100mm apart. The zeros in the diffraction pattern are spaced at angular intervals of 8.3 degrees. Calculate the wavelength.
A truck covers 39.1 meter in 8.6 seconds while smoothly slowing down to a final speed of 2.8 m/s. Find what is the trucks acceleration
An iron wire has a cross-sectional area equal to 3.50x10^-6 m2. Carry out the following steps to determine the drift speed of the conduction electrons in the wire, Calculate the drift speed of conduction electrons in this wire
A thermos contains 148 cm3 of coffee at 88.5°C. To cool the coffee, you drop two 12.2-gram ice cubes into the thermos. Estimate the final temperature of the coffee in degrees Celsius
A ball thrown straight up at an initial speed of 14.0m/s reaches a maximum height of 7.6m. What fraction of the ball's initial kinetic energy is dissipated by air resistance as the ball moves upward?
q1. what would be the equilibrium temperature when a 256 g block of copper at 314 degc is placed in a 140 g aluminium
A massive pulley in the shape of a solid disk is mounted on an axle with negligible friction. What is the mass of the pulley
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