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Discuss the differences between nonionizing radiation and ionizing radiation. Describe common sources of exposure, general position on the EM spectrum, biological effects of excessive exposures, control methods for occupational exposures, etc
A 1.2kg block slides along a frictionless surface at 1.5m/s . A second block, sliding at a faster 4.8m/s, what is the mass of the of the second block
What is average kinetic energy of each helium atom
A diffraction grating has 1.5?m spacing. Find the first-order diffraction angles for the following wavelengths. Find the first-order diffraction angles for red light
displacement 1 is in the yz plane 58.0deg from the positive direction of the y axis has a positive z component and has
A object with mass m=1.0kg is rotating around a axis, with a constant angular speed omega=6.28rad/s. The radius of the circular motion is 2.0m. What is the tangential speed
Consider an old-fashion bicycle with a small wheel of radius 0.25 m and a large wheel of radius 0.86 m. Find the total distance traveled by the rider
A charge of 2.19 µC is held fixed at the origin. A second charge of 2.19 µC is released from rest at the position (1.15 m, 0.470 m) . If the mass of the second charge is 2.10 g, what is its speed when it moves infinitely far from the origin?
A thin, 70.0g disk with a diameter of 7.50cm rotates about an axis through its center with 0.270J of kinetic energy
A walrus loses heat by conduction through its blubber at the rate of 110 W when immersed in -1.00°C water. What is the average thickness of its blubber
A sphere of radius R has a charge Q. The electric field strength at a distance r > R is Ei. What is the ratio Ef/Ei of the final to first electric field strength if Q is halved.
A 3.0-kg block is traveling in the -x direction at 5.0 m/s, and a1.0-kg block is traveling in the +x direction at 3.0 m/s. (a) Find hte velocity Vcm of the center of mass.
An unstretched spring is 13.0 cm long. When you hang an 845 g weight from it, it stretches to a length of 16.0 cm. What is the force constant (in N/m) of this spring
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