At what rate is a 60.0-kg boy using energy when he runs up a ...

[melly21297]

At what rate is a 60.0-kg boy using energy when he runs up a flight of stairs 10.0-m high, in 8.00 s?
 
  A)
 
  80.0 W
 
  B)
 
  75.0 W
 
  C)
 
  736 W
 
  D)
 
  4.80 kW
 
  E)
 
  48 W

Question 2

If the electric flux through a circular area is 5.0 Nm2/C, what is the electric flux through a circle of double the diameter assuming the orientations of the circles are the same and the electric field is uniform?
 
  A)
 
  5.0 Nm2/C
  B)
 
  20 Nm2/C
  C)
 
  2.5 Nm2/C
  D)
 
  1.0 Nm2/C
  E)
 
  10.0 Nm2/C

[tennis14576]

Answer to Question 1

C

Answer to Question 2

B