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The second order bright fringe of 640 nanometer light falling on a diffraction grating is observed at 16.9 degree. Evaluate how far apart are the slits? Obtain at what angle will the fourth order be observed?
A 9.0-kg box of oranges slides from rest down a frictionless incline from a height of 5.0 m, What is the coefficient of kinetic friction, µk, of the surface from A to B
A man pushes a lawn mower on a level lawn with a force of212N. If 52% of this is directed downward, how much work is done bythe man in pushing the mower 4.8 m.______J
q1. the brick wall of thermal conductivity 0.91 wmdegrees c of a building has dimensions 2.9 m by 6 m and is 18 cm
At t = 5.0 seconds, the cheetah is standing still, having knocked over the gazelle. Illustrate what is the average acceleration of the cheetah from t = 0 to t = 5.0 seconds?
Astronauts use a centrifuge to simulate the acceleration of a rocket launch, What is the astronaut's tangential acceleration during the first 20.0s
If an amount of heat equal to magnitude of the work done by friction is absorbed by the crate of fruit and the fruit reaches a uniform final temperature, what is its temperature change DeltaT.
An object attached to a horizontal spring is oscillating back and forth along a frictionless surface. The maximum speed of the object is 1.84 m/s, and its maximum acceleration is 7.07 m/s2.How much time elapses among an instant when the object's spee..
In 1581, when Galileo was 17 years old, he noticed one morning at the Cathedral in Pisa (just next door to the leaning tower) that after the chandeliers were lit several of them oscillated back and forth with different amplitudes, How long was the..
Consider a system consisting of three masses on the axis. Mass m1 = 1.50kg is at x = 1.40m ; mass m2 at 2.30kg is at = 2.10 m; and mass m3= 3.30kg is at = 2.60 m
A particle with charge of 4 microcoloumbs is at the origin,another identical particle is placed 2 m from the origin on thepositive x-axis and another 2 m on the positive y-axis. Provide asketch with vectors representing the forces on the charge at..
A neodymium-glass laser emits short pulses of high-intensityelectromagnetic waves. What is the average power ef each pulse that passes through a 2.70 10-5 m2 surface perpendicularto the beam
Your professor enters the dogsled race during winter break. To getstarted, he pulls his sled, a mass 80 kg with a force of 180N at 20degrees to the horizontal. Find a) the work he does b) the finalspeed of the sled after it moves 30s.
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