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Light of wavelength 490.1 nm falls on two slits spaced 0.32 mm apart. What is the required distance from the slits to the screen if the spacing between the first and second dark fringes is to be 3.9 mm?
small object is placed to the left of a convex lens and on the optical axis. What is the position of the image formed by the lens
A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. Find the speed of the wagon after the rock is thrown
A 5.0-g bullet traveling horizontally at an unknown speed hits and embeds itself in a 0.195-kg block resting on a frictionless table, Determine the initial speed of the bullet
A car is towing a boat on a trailer. The driver starts from rest and accelerates to a velocity of 12.0 m/s in a time of 25.0 s. What is the acceleration of the car and trailer
For light that originates within a liquid and strikes the liquid/air interface, What is Brewster's angle for this light
A spy satellite is in circular orbit around Earth. It makes one revolution in 5.97 hours. How high above Earth's surface is the satellite
The proper length of one spaceship is 2.8 times that of another. The two spaceships are travelling in the same direction and, while both are passing overhead, an Earth observer measures the two spaceships to be the same length.
A rectangular building lot has a width of 61.5 ft and a length of 119 ft. Determine the area of this lot in square meters
An unknown substance has a mass of 0.125 kg and an initial temperature of 94.7. calculate the specific heat of the unknown substance
A discus thrower (with arm length of 1.2 m) starts from rest and begins to rotate counterclockwise with an angular acceleration of 2.4 rad/s2. What is the tangential acceleration of the discus thrower at this point
Neglect air resistance, as well as any energy absorbed by the pole, and clerify her altitude as she crosses the bar.
Two magnetic air pucks are approaching each other for a glancing blow. This time one of the pucks will have an additional mass (lead collar). estimate the mass of the collar if the mass of the puck itself is 0.199 kg and the mass of the second puck..
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