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An overhead light fixture holds three light bulbs.
Every light bulb has a luminous flux of 1892 lm.
The light fixture is 1.8 m above the floor.
What is the illuminance on the floor?
Describe how the law of conservation of energy holds good in light interference pattern
A sled slides down a frictionless track and loops the loop without falling off. What is the minimum value of h in terms of r ? The only other information given is that the an
What are the needs of light sources for fibre optic communication? Light sources for fibre optic communication should meet certain given requirements as illustrated below: a
derive the equation for reflection and transmission coefficient for s polarization
a car of mass 800kg is pulling a trailer 300kg where sin a=1|200.Resistance to motion(apart from gravity) is 1.5N per kg of mad for each vehicle.calculate the pulls of the engine
Determine the change in entropy, in joules, when 5 moles of an ideal gas expands from a value of 4 lits. to 40 lits. at 27°C. (R = 8.314 JK -1 mol -1 )
After the parallel algorithm has been written as well as executed performance of both algorithms is one of other main concerns. In order to examine performance of algorithms there
The weighted rod floats with 6 cm of its length under water [density 1000 kg/m3]. What length is under the surface when the rod floats in brine [density 1200 kg/m3].
Suppose that the x rays are emitted from a focal spot isotropically. The photon flux is 3.28 x 10 6 photons mm -2 sec -1 at a distance of 0.75 m from the focal spot. What is the
A simple pendulum Tie a cord at least 2 m long to some object like a stone or a small metal ball. Suspend this in a doorway or from a hook in the ceiling and begin it swinging
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