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A red line (wavelength 620 nm) in the third order overlaps with a blue line in the fourth order for a particular grating. What is the wavelength of the blue line?
nm
An object acted on by three forces moves with constant velocity. Find the direction and magnitude of the third force acting on the object
A 1400 wrecking ball hangs from a 20 -long cable. The ball is pulled back until the cable makes an angle of 30.0 with the vertical. By how much has the gravitational potential energy of the ball changed?
Tim walks half of the time and runs the other half. In terms of given quantities, in the special case that, what will be Tim's margin of victory.
a hollow sphere has a mass of 15kg, an inner radius of 12cm and an outer radius of 18cm. What is the rotational inertia of the sphere
Suppose a capacitor in a video camera has a capacitance of 26.0 ?F, How much potential energy is stored in the capacitor
A tin can is filled with water to a depth of 38cm . A hole 20cm above the bottom of the can produces a stream of water that is directed at an angle of 30? above the horizontal. Find the maximum height of this stream of water
An eagle with 1.8m wingspan flaps its wings 21 times per minute, each stroke extending from 42%u2218above the horizontal to 42%u2218 below. What's the average tangential velocity of the wingtip
Helium forms a solid at low temperatures and high pressures. To maintain the order present in a solid, each atom must remain at its assigned position, Find the uncertainty in momentum of the helium atom
The middle C string on a piano is under a tension of 911 N. The period and wavelength of a wave on this string are 3.82 ms, Find the linear density of the string
The pressure fluctuation of sound waves at the closed end of a pipe vibrating at resonance is: 1. Minimum 2. 1/2 minimum 3. unchanged 4. maximum 5. 1/2 maximum
q1. a pipe open at one end has a fundamental frequency of 256 hz. a second pipeidentical to first pipe is shortened by
A 58 kg gymnast does a vault. He is traveling at 5.6 m/s just before he lands. He comes to a stop in 0.08 s. What is the average net force acting on him during this time
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