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The hydrogen spectrum has a red line at 656 nm and a violet line at 434 nm. What angular separation among two spectral lines obtained by a diffraction grating that has 4160 lines/cm? (Suppose that the light is incident normally on the gratings.)
A dentist's drill starts from rest. After2.90s of constant angular acceleration it turns at a rate of2.2104rev/min. Find the drill's angular acceleration
A dentist uses a mirror to examine a tooth. The tooth is 1.16cm in front of the mirror, and the image is formed 12.1 cm behindthe mirror. Determine the mirror's radius of curvature. Calculate the magnification of the image.
A light beam is incident on heavy flint glass (n 1.65) atthepolarizing angle. Calculate the angle of refraction for the transmitted ray
A uniform disk of radius 0.46 m is mounted on a frictionless, horizontal axis. A light cord wrapped around the disk supports a 0.58 kg object. When free from rest the object falls with a downward acceleration of 4.1 m/s squared.
q. suppose that you hear a clap of thunder 15.90 s after seeing the associated lightning stroke. the speed of sound
write a two to three page paper in which you1.provide at least three reasons for believing in the accuracy or
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
calculate the de broglie wavelength of a typical person walking through a doorway. make reasonable approximations for
Altitude of 575 meter with zero initial velocity; 8.0 second she falls freely; rate of descent at 15m/s^2 until her rate of descent reaches 5.0 m/s. Find her average velocity for the entire trip
A golf ball of mass 0.045 kg is hit off the tee at a speed of 33m/s. Find the average force exerted on the ball by the golf club
The car that hits a concrete barrier and takes 0.3 seconds to stop.
A 2200 kg sport utility vehicle travelling at 86 km/h can be stopped in 0.15 s if it hits a concrete wall. Presume a 60 kg person was in the car that hit this wall. The velocity of the person equals that of car both before and after the crash, and..
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