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A chest x ray uses 14 keV photons. A 65 kg person receives a 35 mrem dose from one x ray that exposes 25% of the patient's body. How many x ray photons are absorbed in the patient's body?
A wheel with a radius of 0.25 m rolls without slipping on a level road at a constant speed of 1.1 m/s for 2.0 min
The blackbody radiation emitted from a furnace peaks at a wavelength of 3.0 10-6 m (0.0000030 m). What is the temperature inside the furnace
A diffraction grating with 395 lines/mm is 1.00 m in front of a screen. What is the wavelength of light whose first-order maxima will be 16.9 cm from the central maximum on the screen.
A 0.32-kg object connected to a light spring with a force constant of 22.4 N/m oscillates on a frictionless horizontal surface. Determine the maximum speed of the object
Consider a weathered rock or soil particle lying on a slope. How would the gravitational force pulling the particle downward along the land surface vary with the inclination of the slope.
Assume someone drops an apple from a vertical distance of 6.0 meters, directly above the point where the arrow hits the tree.
An ice block is pushed horizontally on a frictionless surface with initial velocity v0. At some point, it comes to the nearly semicircular bump with a radius R=0.42m and the height h=0.33m above the ground.
A rocket moves with a velocity of 0.91c to the right with respect to a stationary observer A. What is the velocity of observer
A rocket moves upward from rest with an acceleration of 29.4 m/s2 for 4 seconds. It then runs out of fuel and continues to move upward. Neglecting any air resistance, how high will it rise?
A 0.100 kg meterstick is supported at its 40 cm mark by a string attached to the ceiling. A 0.700 kg mass hangs vertically from the 5 cm mark.
A 15.0 kg loudspeaker is suspended 2.50 m below the ceiling by two 3.10m long cables that angle outward at equal angles
A 0.43 Tesla magnetic field is perpendicular to a circular loop of wire with 52 turns, what is the magnitude of the induced emf in Volts
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