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A double-slit interference pattern is created by two narrow slits spaced 0.21mm apart. The distance between the first and the fifth minimum on a screen 58cm behind the slits is 6.2mm .
What is the wavelength of the light used in this experiment?
A 45.4 kg girl is standing on a 144 kg plank. The plank, at first at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. The girl begins to walk along the plank at a constant velocity of 1.60 m/s relative to the plank. Wha..
Two objects (01 and 02) have equal ammounts of electric charge Q on each of them. each object is located in the same electric field, the electric , the electric field having a magnitude of e.
An aeroplane has wings with a surface area of 34 m2. The shape of the wings are such that air moving over the top of them travels 20% faster than the velocity of the air under the wing, what is the take-off speed of the plane
The water in a tank is at a gauge pressure of 259,181 Pa. If the bottom of the tank that has an area of 0.6 m2, what is the force on the bottom of the tank
A ball is placed on an edge of a cliff and it is kicked by a soccer player at 20.0 m/s at an angle of ? = 30? above the horizontal, Find the height of the cliff
q1. two packages at ups start sliding down a ramp 40 degrees from the horizontal package a is sliding down in front of
A rock is shot up vertically upward from the edge of the top of the building. The rock reaches its maximum height 2 s after being shot. find how tall is the building
What is an initial speed given to the rock
A system performs 352 J of work on its surroundings while losing 133 J of internal energy. Determine the heat transferred to the system during this process
Point A is located 0.259 m away from a charge of -2.11 x 10-9 C. Point B is located 0.487 m away from the charge. What is the electric potential difference VB - VA between these two points.
When the magnetic flux through a single loop of wire increases by 30 Tm^2, an average current of 40 A is induced in the wire. over what period of time did the flux increase
A very massive object -almost innitely massive - moving with velocity v1 = 100m/s hits a very light object - "massless" - at rest. What is the final velocity of the very light object
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