A piece of metal has a mass of 9.00 kg. If it displaces water that fills a container 10.0 cm x 10.0 cm x 10.0 cm, what is the ma
1 answer:
You might be interested in
Answer:
The given statement is false.
Explanation:
For any negative vector
The magnitude of the vector is given by
As we know that square root of any quantity cannot be negative thus we conclude that the right hand term in the above expression cannot be negative hence we conclude that magnitude of any vector cannot be negative.
Answer:
F = 5.625 10⁻⁷ N
Explanation:
For this exercise we use coulomb's law
F =
where k is the Coulomb constant which is equal to 9 10⁺⁹ N m² /C²
as the charge on the two spheres has the same sign, the force is repulsive,
let's calculate
F = 9 10⁹ 25 10⁻⁹ 10 10⁻⁹ / 2²
F = 5.625 10⁻⁷ N