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A device used in radiation therapy for cancer contains 0.81 g of cobalt-60 (59.933 819 u). The half-life of this isotope is 5.27 yr. Determine the activity (in Bq) of the radioactive material.
Two 34 charges are attached to the opposite ends of a spring of spring constant 150 and equilibrium length 50. By how much does the spring stretch
The circuit shown in the drawing is constructed with six identical resistors and an ideal battery. When the resistor R4 is removed from the circuit, Determine the resistance of each resistor
there are certain big questions that philosophers have been puzzling over for millennia. amazingly many people ask
a 86 mm focal-length lens is used to focus an image on the film of a camera. the maximum distance allowed between the
The desperate contestants on a TV survival show are very hungry. The only food they can see is some fruit hanging on a branch high in a tree. With what speed does the rock leave the spring
three uniform objects: a rod, a right triangle, and a square. Their masses and their coordinates in meters are given. Determine the center of gravity for the three-object system
The temperature of 1.5 kg of ethanol is 37c. What would the final temperature be if 80 000J of energy as heat is added to the ethanol.
A car enters a 300-m radius flat curve on a rainy day when the coefficient of static friction between its tires and the road is 0.600. what is the maximum speed if the ramp is banked 30 degrees
Research Data Critique Complete the following based on your assigned data scenario:
The intensity of light from a lightbulb is 12 W/m2 at a distance of 0.45 m from the bulb. What is the intensity across the room at a distance of 2.5 m?
The coherent green light of wavelength 650 nm illuminates two narrow slits in a screen. The slits are separated by 0.08 mm. A thin transparent plastic film (index of refraction 1.3) covers one slit. The light from the slits reaches a screen 1.0 m awa..
The spring is then released. If the mass is attached to the spring, explain how far up the slope will the mass move before coming to rest? Express your answer using two significant figures.
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