Change of pitch that occurs<span> due to a moving sound source</span>
Answer:
Explanation:
Given
diameter
runner start at (x,y)=(48 m,0 m)
Runner runs around the circle 2.5 times
i.e. he runs two and half rounds
displacement of two rounds is zero so net displacement is of half round
displacement
After 2.5 round he will be towards west direction with respect to origin
so direction of displacement vector is west
Answer:
Explanation:
Given
average speed of Phelps
total distance
he swims first 100 m at an average speed if
so time taken is
suppose is the time taken to swim remaining half
average velocity is
so velocity in the second half is
Answer:
red light is absorbed and reflected off most plants
Explanation:
It is likely that until today there is no physical / mathematical argument that allows to equate this statement. But there are countless observations that have led to that conclusion.
From these observations two types of highlights can be summarized: Magnetic fields and Gravity Force.
Electromagnetic Field: If there is a negative or positive charge, these charges should be observed through the electric and magnetic fields by means of microwaves. However, there is currently no observation that supports any electromagnetic charge in space.
Force of gravity: The only force capable of maintaining the attraction of the planets, without affecting (at certain scales), is the force of gravity. An electromagnetic force often exceeds that of gravity, but has not been observed at the moment.