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Two slits separated by a distance d = 1cm allow light of wavelength 500nm to pass through and interfere. A screen is situated 10m from the slits, where a pattern of bright and dark fringes are observed. As measured from the center 0th order fringe, what is the distance to the first dark fringe in micrometers?
A member of an aircraft maintenance crew wears protective earplugs that reduce the sound intensity by a factor of 360. When a jet aircraft is taking off, the sound intensity level experienced by the crew member is 91 dB. What would the sound intensit..
An infinite plane of charge (see figure below) has a charge perunit area of σ = 2.7 µC/m2. What is the change in the electric potential between points that are2.3 m (initial) and 4.6 m (final) from the plane?
Green light has a wavelength of 5.4 x 10-7 meter. Compute the frequency of this EM-wave in air
One swimmer in a relay race has a 0.49 s lead and is swimming at a constant speed of 3.97 meter per second. Determine what constant speed must the second swimmer have in order to catch up to the leader at the end of the pool
An engine with an output of 267.0 W has an efficiency of 39.0 %. It works at 9.00 cycles/s. How much work is done in each cycle? How much heat is rejected each cycle
A skier of mass 111 kg travels down a frictionless ski trail. what is the work done by gravity on the skier
A motorcycle, which has an initial linear speed of 6.4 m/s, decelerates to a speed of 1.5 m/s in 5.7 s. estimate the angular displacement (in rad) of each wheel
if car a is moving east at a speeed of 40mph realtive to the ground and car b is moving east at 30mph relative to the ground. what is the relative speed and direction of car b
A beam of hydrogen molecules (H2) is directed toward a wall, at an angle of 38° with the normal to the wall. What is the beam's pressure on the wall
A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 68.80 diopters, and the lens-to-retina distance is 1.461 centimeter. Determine how far is the blackboard from her eyes
one electron is at the origin of a coordinate system. a second electron somewhere in the x-y plane feels a force 2.4 x
Assuming that the total retarding force on the diver is constant at 55.0 N with the parachute closed and constant at 3600 N with the parachute open, what is speed of the diver while he lands on the ground.
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