Why were quasars and active galaxies not initially recognized as being “special” in some way?
1 answer:
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Answer:
Height of tree = 78.35 meters.
Explanation:
We have
1 meter = 3.28 feet
That is
Here height of tree = 257 ft
Height of tree = 257 x 0.3048 = 78.35 m
Height of tree = 78.35 meters.
Answer:
The direction of propagation is west.
Explanation:
We know that electromagnetic waves (EM-waves) are transverse in nature. EM-waves containing electric field and magnetic field both are perpendicular to the each other ( E ⊥ B ).
Transverse waves : the direction of propagation is perpendicular to the direction of amplitude which we call transverse waves. eg : light waves, water waves, gravitational waves etc.
Here, in our case the direction of electric field is pointing upward to the plan of the screen and the direction of magnetic field is pointing north
∴ ×
Where direction of electric field,
direction of magnetic field,
direction of propagation at particular instant.
Above equation follows right hand rule. put your finger toward you (out of the screen) then curl to the north side then the thumb will give you the direction of the wave propagation ( west side )
In our case west direction is the direction of wave propagation.
Answer:
The distance traveled by the ball before it lands in the other player's glove is 130.96 m.
Explanation:
Given;
angle of projection of the ball, θ = 40⁰
initial velocity of the ball, u = 36.1 m/s
The distance traveled by the ball before it lands in the other player's glove is the range of the projectile, calculated as follows;
Therefore, the distance traveled by the ball before it lands in the other player's glove is 130.96 m.