Calculate the power of a weight lifter when a 614.7 N barbell is lifted 4.48 m in 27.4 seconds

The power of a weightlifter is 100.5 Watt.

Explanation:

Power=Workdone/Timetaken

Therefore, the power of a weight lifter when a 614.7 N barbell is lifted 4.48 m in 27.4 seconds is 100.5 Watt.

layer a is the exosphere and layer b is the thermosphere.   is the answer i think but i hope this .

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2