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Hubble constant; H0 (E.P. Hubble; 1925):
The constant that determines the relationship among the distance to a galaxy and its velocity of recession because of the expansion of the Universe. As the Universe is self-gravitating, it is not constant truly. In cosmology, it is described as
H = (da/dt)/a,
where a refer to the 4-radius of the Universe. While evaluated for the present, it is written
H0 == H(t = now).
The Hubble constant is not known to great correctness (only about a factor of 2), however is supposed to lie somewhere among 50 and 100 km/s/Mpc.
Path of a projectile The apparatus below can be used to indicate the independence of the horizontal and vertical velocities of a projectile. The projectile is a metal ball, and
An electron in the hydrogen atom loses 3.02 eV as it falls to energy level E 2 . From which energy level did the atom fall?
How to find acceleration from succesive speed?
two blocks of mass 2kg and 4 kg are held together by a string force of 10N is applied on 2kg and 20N on 4kg find the tension in the string connected between two blocks
Explain about the term step index fibre. Step index fibre: Into a step index fibre, the refractive index keeps constant throughout the core and decreases at the core-claddin
describe the applications of potentiometers
Assigned homework a. The objective of this problem is to get a sense of the tradeoff between cross-section and stiffness for beam structural member. Consider a beam that is 1 me
In the circuit shown in Figure, with the switch in position 1, the capacitor is uncharged. If he switch is moved to position 2 at time t =0s, measure (i) The initial curren
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What are benefits of fiber-optic sensors for harsh environments? Benefits of fiber-optic sensors for harsh environments are illustrates below: a. Small, contact measurements
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