An open system starts with 276 J of mechanical energy. The energy changes to 267 J of mechanical energy and 8 J of thermal energy. What is the final total energy of the system?

a coal burning power plant

double the distance = divide strength by 4

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