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A diffraction grating produces a first-order bright fringethat is 0.0824 m away from the centralbright fringe on a flat screen. The separation between the slits ofthe grating is 4.17 x 10-6 m,and the distance between the grating and the screen is 0.630 m. What is the wavelength of the light shining on the grating?
m
A muon particle ( q=-e, m=207me) is traveling at a speed v=4.2*10^7 m/s, What is the radius of its path in the magnetic field
The potential difference between the accelerating plates of a TV set is about 25 kV. If the distance between the plates is 1.2 cm, find the magnitude of the uniform electric field
q1. a loudspeaker is placed between two observers who are 120 m apart along line connecting them. if one observer
q1. a boat crosses a river of width 115 m in which the current has a uniform speed of 1.39 ms. the pilot maintains a
Velma passes Mort at a speed of 0.75c. At this speed, the "time dilation factor" is 1.5. In other words, Mort observes a 1-second tick of Velma's clock to take 1.5seconds. assume that they are born at the same time, and that Mort observes himself ..
A catapult launches a rock at a 46° angle with respect to the horizontal. Find the maximum height attained if the speed of the rock at its highestpoint is 26.7 m/s
A wooden dowel (cylinder) has a diameter of 2.20 cm. Determine the density of the dowel
A stone is dropped from the top of a cliff at t=0. The splash it makes when striking the water below is heard 6 seconds after it is dropped (i.e. at t=6 sec). How high is the cliff? (i.e. find 'h') suppose that the speed of sound in air is 340m/s ..
It is desired to build a heat pump that has an output temperature of 31 °C. Calculate the maximum coefficient of performance for the pump when the input source is ground water at 8.1 °C
A 245 kg person lays on board that is supported only on the ends and that has a mass of 12.0 kg. what is the force on either side where the board is supported
Write down a function named as kineticEnergy() which determines the kinetic energy of an object in accordance with the following formula.
An extension cord made of two wires of diameter 0.129 {rm cm} (no. 16 copper wire) and of length 1.5 m (5 ft) is connected to an electric heater which draws 13.5 A on a 120-{rm V} line. How much power is dissipated in the cord.
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