3 years ago

Describe the importance of the hubble telescope in a short paragraph. QUICK PLEASE HELP ASAP

1 answer:

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The Hubble Telescope or Hubble Space Telescope (HST) is designed to take images found within the solar system. It is a low-orbit kind of telescope that helped a lot of scientists in proving some theories in astrophysics and the dimensions of the Universe. It was launched in 1990s and since then has been in space taking up good quality images that would help scientists learn more from space explorations.

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A magnetic field is uniform over a flat, horizontal circular region with a radius of 1.50 mm, and the field varies with time. In

atroni [7]

Answer:

The average induced emf around the border of the circular region is $8.48\times 10^{-5}\ V$ .

Explanation:

Given that,

Radius of circular region, r = 1.5 mm

Initial magnetic field, B = 0

Final magnetic field, B' = 1.5 T

The magnetic field is pointing upward when viewed from above, perpendicular to the circular plane in a time of 125 ms. We need to find the average induced emf around the border of the circular region. It is given by the rate of change of magnetic flux as :

$\epsilon=\dfrac{-d\phi}{dt}\\\\\epsilon=A\dfrac{-d(B'-B)}{dt}\\\\\epsilon=\pi (1.5\times 10^{-3})^2\times \dfrac{1.5}{0.125}\\\\\epsilon=8.48\times 10^{-5}\ V$