Answer:
a) , b)
Explanation:
a) The magnetic force experimented by a particle has the following vectorial form:
The charge of the electron is equal to . Then, cross product can be solved by using determinants:
The magnetic force is:
b) The charge of the proton is equal to . Then, cross product has the following determinant:
The magnetic force is:
Answer:
A.
Explanation:
NEAR THE CENTER OF TECTONIC PLATES.
By Newton's second law, the car slows down with an average acceleration a such that
-7100 N = (1500 kg) a ⇒ a ≈ -4.7 m/s²
If we treat the car as accelerating uniformly with this magnitude, then the car slides a distance ∆x such that
0² - (25 m/s)² = 2a ∆x ⇒ ∆x ≈ 66 m
Answer:
the answer is Z,X,W,Y
Explanation:
we know Z is the hardest material because when it is rubbed against any material,the other material is definitely left with a mark,so Z is 1st
we know Y is the weakest material because when it is scratched by all other materials,it is left with a mark.so we write Y at the last.
X is rubbed against W and W is left with a mark,so we know that X is harder than W,so we should write X just before W and after Z.