1. A coal-burning plant station provides the energy needs of a certain community which has an average power requirement of 670 MW. The power station has an overall efficiency of 35%. The specific energy of coal is 28x10^6 jxkg^-1. Calculate the mass of coal burned every second. Report your answer in kg with 2 sig figs.

i would like to make dinner for my mom, dad, and sister

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles

that would be because of both gravity and friction. so     c