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(a) Sunlight passes through a diffraction grating. What is the greatest number of lines per inch in the grating for which complete first-, second-, and third-order visible spectra can be observed on a flat screen parallel to the grating? (Assume that the visible light includes Fiber 400 nm < 8 < 750 nm. )
(b) Sunlight is incident on a diffraction grating with the number of lines per inch you found in part (a). The spectrum created falls on a screen 3.00 m from the diffraction grating. Determine the distance from the central maximum to the yellow-green line formed by 550 nm light in each of the three spectra.
A rotating door is made from four rectangular sections. The mass of all section is 85kg. A person pushes on the outer edge of one section by a force of F = 68N that is directed perpendicular to the section. All section measures 1.2m from the axis ..
A ladder of mass M and length L is propped up at an angle A. The coeffcient of static friction between the ground and the ladder is U= 0:43, and the wall against which the ladder is resting is smooth and frictionless. What is the minimum angle A fo..
A Young's double-slit interference experiment gives bright fringes separated by 2.5 cm on a screen when the experiment is performed in air. What is the new spacing between bright fringes
A hockey puck moving at 0.473 m/s collides elastically with another puck that was at rest.Find the speed of the second puck after the collision
Two friends are carrying a crate of mass 200 kg up a flight of stairs. The crate has length 1.25 m and height 0.500 m, What is the magnitude of the upper person's force
Illustrate what is the minimum centripetal acceleration the truck must have going around the circular curve with radius 0.35 km so that it will clear the gully and land on the other side?
A 1kg wooden block of density 0.8 g/cm3 is dropped from a height of 10cm in a deep pool. what is the speed of the block just before it strikes the water? ignore any energy loss and the surface tension of water.
Object Q stands on the central axis of a spherical mirror. For p= +15, concave mirror, and 10 centimeter between the focal point and the mirror. Determine the lateral magnification
Using a theodolite, with a laser rangefinder, a researcher at point A locates a pair of rare birds nesting at point B, For observation from point C, determine the direction angles and distance to the nest at B
You and your friend are standing on a horizontal platform that is rotating about its center. What is the difference between your angular speed (in rad/s) and your friend's speed
The escape speed of a particular planet with a radius of 8.600e+6 m is 14,500 m/s. What is the mass of the planet
A steel beam is placed vertically in the basement of a building to keep the floor above from sagging. Find the vertical compression of the beam
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