Which factor is most important to keep the same when comparing the hardness of solids?
A. The intensity of the light
B. The temperature of the hot plate
C. The method of making a scratch on the material
D. The amount of each substance

what was the answer?

the answer is 3.1 his answer is wrong mines is right

probably not the "magnets"in the magnet, so to speak, are thought to be electrons orbiting in shells. vurrent loops two sides to the loop

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