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X rays diffract from a crystal in which the spacing between atomic planes is 0.179nm. The second-order diffraction occurs at 51.0 degrees. What is the angle of the first-order diffraction?
Both surfaces of a double convex lens have radii of 30.0 cm. what is the index of refraction of the lens material
The Hall effect can be used to determine the density of mobile electrons in a conductor. Find the density of mobile electrons in the material
What is the lenght of the driveway. An electric field = (89000 N/C, right) causes the ball in the figure below to hang at a 20° angle. The ball's mass is 4.7 g. What is the charge on ball.
A conical pendulum is formed by attaching a 50 g mass to a 2 m string. The mass swings around a horizontal circle of radius 1 m. What is the acceleration of the mass
The current in a 100 watt lightbulb is 0.900A . The filament inside the bulb is 0.120mm in diameter. What is the electron current in the filament
Consider a 2.4 kg object sliding along a horizontal frictionless surface at 5.2 m/s. Find initial and final elastic potential energies
A bat hits a moving baseball. If the bat delivers a net eastward impulse of 1.3 N-s and the ball starts with an initial horizontal velocity of 3.8 m/s to the west and leaves with a 5.1 m/s velocity to the east
A uniform solid ball that has a mass of 21.8 g and a radius of 5.1 cm rests on a horizontal surface. What is the angular speed of the ball after impact
In the annual battle of the dorms, students gather on the roofs of Jackson, A second balloon launched at the same angle hits the edge of Walton's roof. Find the initial speed of this second balloon
A particle in the solar system is under the combined influence of the Sun's gravitational attraction and the radiation force due to the Sun's rays, Calculate this critical radius
A dam is used to block the passage of a river and to generate electricity. Approximately 5.73 x 10^4 kg of water fall each second through a height of 19.6 m. I one half of the gravitational potential energy of water were converted to electrical energ..
q1. an airplane p is heading n 80o w at 240 ms relative to the air. the wind blows from n 10o e with the speed of 41 ms
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