Propose two reliable ways of separating the nails from the
sawdust

-Use of magnet

-Mixing in water

Explanation:

Two ways are;

1) Use of magnet: Nails are made of steel and thus can be attracted by magnets. So when a magnet is put inside the mixture, it attracts the magnet out.

2) Mixing it in water: When it is put in water, the nails will go to the bottom while the saw dust will float on the water.

less than one you can't create energy

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