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Burka [1]
3 years ago
14

A football player kicks a field goal from a distance of 45 m from the goalpost. The football is launched at a 35° angle above th

e horizontal. What initial velocity is required so that the football just clears the goalpost crossbar that is 3.1 m above the ground? Ignore air resistance and the dimensions of the football.
Physics
1 answer:
daser333 [38]3 years ago
7 0

Answer:  try searching It up on go0gle

Explanation:

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C. Transform Boundary

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Explanation:

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At some instant and location the electric field associated with an electromagnetic wave in vacuum has the strength 96.5 V/m. Fin
prisoha [69]

Answer:

B = 32.17 x 10^-8 Tesla

u = 8.24 x 10^-8 J/m^3

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E = 96.5 V/m

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The relation between the electric field strength and the magnetic field strength is given by

B = E / c = 96.5 / (3 x 10^8) = 32.17 x 10^-8 Tesla

Let u be the energy density.

u = \frac{1}{2}\times \varepsilon _{0}E^{2}+\frac{1}{2\mu _{0}}B^{2}

u = \frac{1}{2}\times 8.854\times 10^{-12}\times 96.5\times 96.5+\frac{1}{2\times 4\times 3.14\times 10^{-7}}\times 32.17^{2}\times 10^{-16}

u = 8.24 x 10^-8 J/m^3

Let Power flow per unit area is

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7 0
3 years ago
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