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Hubble's law (E.P. Hubble; 1925):
A relationship discovered among distance & radial velocity. Further away a galaxy is away from is, the quicker it is receding away from us. The constant of proportionality is Hubble constant, H0. The cause is interpreted such as the expansion of spacetime itself.
What is force
A 2kg piece of copper at 200 o C is taken out of a furnace and is allowed to cool in air with an ambient temperature of 25 o C. Calculate the entropy change in the universe as a
A mass M moves horizontally along a smooth rail. A pendulum is hung from M with a weightless rod and mass m at its end. Find the eigen frequencies and describe the normal modes
Ampere's Law is a relation among cause and effect. When Ampere's law is write in the form below on which side of the equation is the cause and on which side of the equation is the
Question: An optimistic model for a battery is just an ideal seat of EMF. A further realistic model commonly used to model actual batteries is Answer: Note that the i
Right-hand rule: A trick for right-handed coordinate systems to find out which way the cross product of two 3-vectors will be directed. There are few forms of this rule, and t
WHY Surface tension increases when an highly soluble SUBSTANCE is dissolved in water WHILE IT DECREASES WHEN an weakly soluble substance is dissolved in water
Fibre optics: Light travels in straight lines, even though lenses and mirrors can deflect it, light still travels in a straight line between optical devices. This is fine for
what are the examples
Question 1. Discuss the physical characteristics of an X-ray beam. Write a note on factors influencing the quality and intensity of the X-ray beam 2. Explain the constructio
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