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Abolt comes loose from underneath an elevator that is moving upward at a speed of 6.1 m/s. The bolt reaches the bottom of the elevator shaft in 3.3 seconds.
a) How high up was the elevator when the bolt came loose?
b) what is the speed of the bolt when it hits the bottom of the shaft?
Unpolarized light with an intensity of 660 W / m2 is incident on a polarizer with an unknown axis. What is the angle between the axes of the polarizers
A mass of 1.62 kg stretches a vertical spring 0.328 m. If the spring is stretched an additional 0.136 m and released, how long does it take to reach the (new) equilibrium position again.
An object falls off of a pier and into the ocean (sea water) where it displaces a total volume of 1.6 cubic meters of sea water. What is the buoyant force acting on the object
A simulated bungee jumper falls off a ledge. The plot below shows the force the bungee cord exerts on the jumper as a function of distance from the ledge. estimate the work done by the bungee cord
What pull does each one exert if their resultant pull is 402-N straight upward.
Suppose you have a lens system that is to be used primarily for 770 nm light. What is the second thinnest coating of fluorite that would be nonreflective for this wavelength
A slit of width 0.50 mm is illuminated with light of wavelength 500 nm, Find the widths of the first and second maxima of each side of the central maximum
A hanging block A ( Ma = 15 kg) is connected by a light cable and a pulley wheel to a second block B ( Mb = 10 kg) situated at the bottom of a frictionless inclined plane with angle %u03B8 = 30o to the horizontal
A meter stick is supported on a fulcrum at the 21 cm mark. A 0.80 kg object is hung from the zero end of the meter stick, What is the mass of the meter stick
What is the frequency of the small axial oscillations that the electron will undergo if it is free along the z-axis near the origin.
The tropical year, the time from vernal equinox to the next vernal equinox, Find the number of seconds in one half of a tropical year
Suppose we measure the terminal voltage of a rechargeable NiCad battery and find it to be 1.28 V when measured by a voltmeter. calculate the internal resistance of the battery
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