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Monochromatic light of wavelength 683 nm passes through a fast shutter that opens for 10^(-10) s. The light the emerges will no longer be monochromatic. What will be the spread of the wavelengths?
You are driving into St. Louis, Missouri, and in the distance you see the famous Gateway-to-the-West arch. how far (in kilometers) are you from the base of the arch
A block of mass m is attached to a string that is wrapped around the circumference of a wheel of radius R and moment of inertia I. Find the moment of inertia of the wheel if its radius is 8.0 cm
A car is initially 4.0km south of a gas station and is moving with a constant speed of 55km/h due north. How far are the vehicles from the gas station when they pass each other
Galaxy A is moving away from us with a speed of 0.80c relative to the earth. How fast is galaxy A moving according to an observer in galaxy B
A lottery machine uses blowing air to keep 2000 Ping-Pong balls bouncing around inside a 1.0m X 1.0m X1.0m box. What is the mean free path between collisions
A car with a mass of 1.50x10^3 kg starts from rest and accelerates to a speed of 18.0 m/s in 12s. Assume that the force of resistance remains constant at 400-N all through this time. What is the average power developed by the car's engine?
when an object is dropped from a height of 20.0m above the surface of planet B, what is the acceleration of a falling object close to this planet
A person wears a hearing aid that uniformly increases the intensity level of all audible frequencies of sound by 32.5 dB. What is the intensity delivered to the eardrum
what speed will the dart leave the gun.
An LED is constructed from a pn-junction based on a certain GA-As-P semiconducting material whose energy gap is 1.9 eV. What is the wavelength of the emitted light
A light bulb is placed at a distance of 15 cm in front of a convex mirror with a radius of curvature of 40 cm. Where is the image of the light bulb
A Ferris wheel is moving at an initial angular velocity of 1.0 rev/48 s. If the operator then brings it to a stop in 3.4 min, what is the angular acceleration of the Ferris wheel
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