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Calculate the absorbed dose in Gy to the skin of a person which receives 1500 ergs/gm of beta radiation from a cloud of radioactive krypton-85 gas. Recalculate the dose if the same energy were deposited by the betas from a xenon-133 gas cloud.
A velodrome is built for use in the Olympics. The radius of curvature of the surface is 20.1 m. At what angle should the surface be banked
When a clock reads 3 s, a cart's velocity in the positive x direction reads 5m/s, What is the magnitude in m/s^2 of the acceleration of the cart
A 1248.0 g mass is on a horizontal surface with ?k = 0.36, and is in contact with a massless spring with a force constant of 790.0 N/m which is compressed, What is the velocity of the mass as it loses contact with the spring
a rod (length 3 meters, mass 1 kg) is pinned at its end so the stick can rotate freely in a plane parallel to a tabletop. Where along the rod is the force applied
A bullet of mass 0.0025 kg moving at 581 m/s impacts a large fixed block of wood and travels 5.40 cm before coming to rest.
The owner of a van installs a rear-window lens that has a focal length of -0.340 m. When the owner looks out through the lens at an object located directly behind the van, How far from the van is the object actually located
In a X-ray tube, electrons are accelerated through a potential of 10, 000V. How much energy does the accelerated electron have
Sunlight is used in a double-slit interference experiment. The fourth-order maximum for the wavelength of 470 nm occurs at an angle of θ = 90°. Thus, it is on the verge of being eliminated from the pattern since θ cannot exceed 90°.
A 3000-kg Ferris wheel accelerates from rest to an angular speed of 0.17rad/s in 11s, calculate the net torque on the wheel
Two protons are released from rest when they are 7.00mm apart. Calculate maximum acceleration
A pilot, whose mass is 85.0 kg, makes a loop-the-loopin a fast jet. Assume that the jet maintains a constant speed of105 m/s and that the radius of the loop-the-loop is 0.393 km
Two parallel conducting plates are separated by 10.0 cm, and one of them is taken to be at zero volts. What is the voltage between the plates
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