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Two slits separated by 0.489 mm are illuminated with light of an unknown wavelength and an interference pattern is observed on a screen5.51 m away. The tenth bright line is 86.5 mm from the central maximum. The wavelength of the light is nm?
The classroom temperature is 20 C. The relative humidity is 60%. What is the total humidity (kg of H2O vapor) in the room if its volume is 200 m3.
A 3.5 m long, 310 kg steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 70 kg construction worker stands at the far end of the beam.
A 575 N woman climbs a staircase that rises at 54 degrees above the horizontal and is 4.10 m long. How much work has gravity done on her as she climbed the stairs
Find the speed of an electron whose mass is 11,000 times its rest mass. If the electrons travel in the lab through a tube 3.2 km long, how long is this tube in the electron's reference frame?
Rank the vector combinations on the basis of their angle, measured counterclockwise from the positive x axis. Vectors parallel to the positive x axis have an angle of 0 . All angle measures fall between 0 and 360. Rank from largest to smallest. To..
a car battery has a rating of 170 ampere-hours. this rating is one indication of the total charge that the battery can
find out the magnitude of the gravitational force exerted by one mass.
It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.2 s, illustrate what is the average force exerted on the ball by the wall
A certain parallel-plate capacitor is filled with a dielectric for which ? = 7.0. The area of each plate is 0.041 m2, and the plates are separated by 2.0 mm. The capacitor will fail (short out and burn up) if the electric field between the plates exc..
A 4.4 cm tall object is placed 27 cm in front of a convex spherical mirror. Find the distance, di, of the image (cm), the focal length of the mirror (cm), and the radius of curvature of the mirror (cm)
If an electron travels 0.250 m from an electron gun to a TV screen in 32.0 ns, what voltage was used to accelerate it
Two objects attract each other gravitationally with a force of 2.5 x10-10 N while they are 0.33 m apart. Their total mass is 4-kg. Find out their individual masses.
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