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The chart shows Daniela's run through her race,
What is her velocity?
1.5 m/s
2 m/s
2.5 m/s
5 m/s
Position in (m)
0
1
2
3
8
9
10
11
4 5 6 7
Time (sec)

Will you chech and finish these for me, because i am stumped with them.

Explain why electric current cannot exist if a current doesn't have a voltage source.

The magnitude of the poynting vector of a planar electromagnetic wave has an average value of 0.939 w/m^2 . the wave is incident upon a rectangular area, 1.5 m by 2.0 m, at right angles. how much total electromagnetic energy falls on the area during 1.0 minute?