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A glass mirror used in a mountaintop telescope is subject to temperatures ranging from -15°C to 45°C.
At the lowest temperature, it has a diameter of 5.1 m.
If the coefficient of linear expansion for this glass is 3.0 x 10-6°C-1.
What is the maximum alter in diameter the mirror undergoes because of thermal expansion?
A Decibel meter reads 140 dB for a sound source at 20''c at 60 % relative humidity. It also records sound pressure for 140 dB as 200 pascals what will it read( decibel meter) at 4
An aereplane has velocity 500m/s with respect to air. Wind blows with velocity 20m/s along north. Then in what direction pilot should be heading so as to go along North-east direct
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Light is quantized. Photons are light quanta. It has zero REST mass. Therefore, it always travels at maximum speed permitted by relativity.
A radioactive substance has a half life of 1 min. If one nuclei decays now , when will be next decay????
Q. Determine the elapsed time in kinematics? Let S = 1 + c 2 + c 4 + ........ Then, S = 1 + c 2 (1 + c 2 + c 4 +.......... ) S = 1 + c 2 S so, S - c 2 S = 1
What are fitting? Practically the only part of a fiber optic system which the public ever notices. End fittings are the components for fixing, supporting, finishing and aiming
I need help with this project ? every time I would turn on my lab work I would get bad grades, and science is my weakest subject
Magnetic instruments are used to find out the magnetic moment of a bar magnet, find out the horizontal component of earth's magnetic field, compare the magnetic moments of two bar
Moment of Inertia of Rigid Bodies : For a continuous mass distribution like found in a hard object, we remove the summation of Eq. (ii) by an integral. If the object is separated i
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