Definitely D. The brakes on a bike rub against the wheel. Not sure about the others.
Answer:
answer 2 because the baseball has less mass then the 1st one
Answer:
F=1.14N j
Explanation:
The magnitude of the magnetic force over a charge in a constant magnetic field is given by the formula:
(|)
In this case v and B vectors are perpendicular between them. Furthermore the direction of the magnetic force is:
-i X k = +j
Finally, by replacing in (1) we obtain:
hope this helps!
Which of the following is it though...?
Answer:
Cement and sand will do
Explanation:
because without it you can't build