Answer:3.95 m/s
Explanation:
Given
Initial velocity(u)
launch angle
Player is 53 m away
Range of projectile


R=41.02 m
so he need to run 53-41.02=11.98 m
Time of flight of projectile 
T=3.03 s
thus average speed of boy 
Answer:
the Corona is about 10 million times less dense than sun's surface.this low density makesuch less bright than surface of the sun
Answer:
MRI
Explanation:
Magnetic Resonance Imaging, furnishes the most detailed picture of brain structure. MRI produces the most point by point picture of the cerebrum. MRI examines by using attractive fields and radio waves to create PC produced pictures that recognize the structures inside the mind. It gives the most point by point and a detailed image of the brain structure.