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Two parallel slits are illuminated with light composed of two wavelengths, one of which is 645 nm. On a viewing screen, the light whose wavelength is recognized produces its third dark fringe at the same place where the light whose wavelength is unknown produces its fourth-order bright fringe. The fringes are counted relative to the central or zeroth-order bright fringe. What is the unknown wavelength?
The human lungs can function satisfactorily up to a limit where the pressure difference between the outside and inside of the lungs is one-twentieth of an atmosphere. how far below the water can she swim
As current flows through a uniform wire, the wire gets hotterbecause the electrons slow down and therefore transform their lostkinetic energy into thermal energy in the wire. why is this statement FALSE?
A spring with a force constant of 585 N/m is compressed a distance of 40 cm. Find the resulting increase in the spring's mass in kg
parachutist with a camera, both descending at a speed of 13 m/s, releases that camera at an altitude of 110-m.
What is the force of friction exerted on the backpack by the table?
Determine the amount of additional work that is required to putthe payload into circular orbit at this elevation
Two cylindrical glass beads each of mass m = 32 mg are set on their flat ends on a horizontal insulating surface separated by a distance d = 3 cm. The coefficient of static friction between the beads and the surface is μs = 0.3. The beads are the..
A simple generator has a coil with area A=0.02m2, which is rotated at frequency f=60Hz (remember that angular frequency is 2*pi*f) in a B=0.5T magnetic field. How many windings (number of turns N) are needed if the generator is to develop an avera..
A tether ball moves around the pole in a horizontal circle with radius 1.5m. If the mass of the ball is 1.3 kg, what angle does the rope make with the pole
Insects do not have lungs as we do, nor do they breathe through their mouths. Instead, they have a system of tiny tubes, called tracheae, through which oxygen diffuses into their bodies. find the oxygen concentration at the interior end of the tube
work function of potassium is 2.225 eV. Find the cutoff wave length of potassium, find the frequency of the x-ray
Over several cycles, a refrigerator does 1.51x10^4 J of work on therefrigerant. What is the amount of work done on the air inside the refrigerator
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