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Estimate the maximum magnetic field you might experience walking under such a power line, and compare to the Earth's field.
If two identical satellites or the Earth in circular orbits collide head on in a perfectly inelasctic collision, what would happen to the debris? Explain Why!! (If you can add formulas proving the e
A 1 µCi hot particle was removed from a worker's forearm using a tape press. An isotopic analysis of the particle is in the table below. What was the beta dose, in Gy and rads, to 1 cm^2 of sk
Assuming the specific heat of the body is the same as water, calculate the temperature rise due to a total body dose of 10 Gy (1000 rads). Show your work.
A collimated gamma ray beam consists of equal numbers of 0.1 MeV and 1.0 MeV photons. If the beam enters a 5 cm thick lead shield, what is the relative portion of 1 MeV photons to 0.1 MeV photons in
A uniform charge of +15.5 µC is on a thin circular ring lying in an xy plane and centered on the origin. The ring's radius is 3.00 cm. If point A is at the origin and point Bis on the z axis a
Assuming the specific heat of the body is the same as water, calculate the temperature rise due to a total body dose of 10 Gy (1000 rad). Show your work.
The brothers depart at the same time. While Salviati's spaceship travels at 0.900c, Simplicio's spaceship can only travel at 0.700c. Knowing this, we set out to find out the age difference between t
What is the direction of the magnetic force on the proton (answer should be an angle relative to the horizontal direction. Use a negative angle if it is below the horizontal)?
Dry air had a CO2 mole fraction of 0.00038 in 2007 (compared with 0.00032 in 1965). Calculate the total mass of CO2 that strikes 1 cm^2 of one side of a green leaf in 1 s in dry air at 25oC and 1.00
The top of Pike's Peak is 14,100 ft above sea level. Neglecting the variation of T with altitude and using the average surface temperature of 290K and the number average molecular weight of 29 for a
For N2 at 25oC and 1.00 atm calculate the number of collisions per second made by one molecule; the number of collisions per second per cubic centimeter; compare these values to N2 at 25oC and 1.0*1
Assume that a lightning bolt can be represented by a long straight line of current. If 15.0 C of charge passes by in a time of 1.5 x 10-3s, what is the magnitude of the magnetic field at a distance o
Calculate the x-component of the force on a 1.0-cm long piece of the lower right-hand wire, due to the other three wires.
A particle of charge 40.00 C travels along the negative x-axis with a speed of 100.00 m/s. Calculate the magnitude of the magnetic field at the point (0.26 cm, -0.97 cm) when the particle is located
The wavelength of red helium-neon laser light in air is 632.8 nm. (a) What is its frequency?
Light of wavelength 700 nm is incident on the face of a fused quartz prism (n = 1.458 at 700 nm) at an incidence angle of 78.0°. The apex angle of the prism is 60.0°. (a) Calculate the angle
The index of refraction for red light in water is 1.331 and that for blue light is 1.340. A ray of white light enters the water at an angle of incidence of 60.8°
A globular cluster at its farthest point from the galactic center is at a distance of 104 pc. What is its period of galactic revolution?
Fiber optics, derive the characteristic equation of the graded-index optical fiber.starting from maxells equations
The two spaceships are traveling in the same direction and, while both are passing overhead, an Earth observer measures the two spaceships to have the same length. If the slower spaceship is moving
A proportional control system is to be used to control the wing flaps of a jet airplane. The wind load is expected to cause as much as 600 in · lb of torque. The system should be able to keep
A telescope consists of a mirror with radius of curvature 4.5 m and an eyepiece. If an astronomer would like the telescope to have a magnification of 181, what focal length eyepiece should he use?
The lens of a slide projector with a focal length of a 120 mm projects a slide onto a screen that is 13 m away. How far from the lens must the slide be placed to form a sharp image on the screen? (