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Four very narrow slits, each separated by 3.20 × 104 meter from the next, are illuminated by a 640 nanometer laser and the resulting interference pattern is observed on a screen 4 meters away. The intensity on the centerline is 565 mW/m2.
(a) Evaluate the intensity on the screen, a distance 6.00 millimeter away from the centerline?
(b) Find what is the new intensity at that location if any one of the four slits is covered up?
A string with both ends held fixed is vibrating in its third harmonic. The waves have a speed of 193m/s and a frequency of 240 Hz . The amplitude of the standing wave at antinodes is 0.440cm.
A 56 kg student runs at 5.0 m/s, grabs a hanging rope, and swings out over a lake, What is the maximum tension in the rope?
A 60kg (including equipment) Olympicski-jumper starts with pushes off from the starting gate (A),giving her an initial velocity of 3m/s. What is the maximum speeds he attains
A 54.0 kg skateboarder wants to just make it to the upper edge of a "quarter pipe," a track that is one-quarter of a circle with a radius of 3m. What speed does he need at the bottom?
A block of mass 10.0 kg slides from rest down a frictionless 35.0° incline and is stopped by a strong spring with k = 2.60 104 N/m. determine how far has the spring been compressed
two point charges are on the y-axis. a 2.5 microc charge is located at y 1.50 cm and a -2.48 microc charge is located
A dam holds back water. In the dam is a turbine that produces power with an efficiency of 0.73. what is the velocity of the water leaving the turbine
On The Apollo 14 mission to the Moon, astronaut Alan shepard hit a golf ball with a 6 iron. For how much more time was the ball in flight
A police officer stops a driver for excessive speed. Find the speed of the driver in respect to the traffic light
An object executing simple harmonic motion has a maximum speed of 4.4 and a maximum acceleration of 0.66 , Find the amplitude of this motion in meters
A river 98.2 m wide flows toward the south at 35.8 m/min. A girl on the west bank wishes to reach the east bank in the least possible time. What is her velocity relative to land
Water flows straight down from an open faucet. The cross-sectional area of the faucet is 2.2 × 10-4m2, find the cross-sectional area of the water stream at a point 0.11 m below the faucet
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