Gabriel Andral hope i helped
Answer:
True
Explanation:
Assuming no wind resistance, there will be no horizontal acceleration, because there will be no forces acting on it.
To solve this problem, we make use of the Coulumb’s law
which relates the electrical force to the charges. The formula used in Coulumb’s
law is given as:
F = k q1 q2 / r^2
where,
F = electric force = 2.3 * 10^-26 N
k = Coulumb’s constant = 9 * 10^9 N m^2/C^2
q1 = q2 = electric charge of protons = 1.602 * 10^-19 C
r = distance between the two protons
Substituting the given values:
2.3 * 10^-26 N = (9
* 10^9 N m^2/C^2) (1.602 * 10^-19 C)^2 / r^2
r^2 = 0.01 m^2
r = 0.1 m
Therefore the protons are only 0.1 m apart or 10 cm.
Answer:
(b) Vl/v
Explanation:
The dimension for V is LT-1
The dimension for Length is L
The dimension for time is T
The fluid property v has a dimension of L2T-1, which is equal to square of the length divided by time.
for (a) Vlv
LT-1×L× L2T-1
= L^4T^-2
(b) Vl/v
LT^-1 ×L/ L^2 T^-1
=1. ; this is dimensionless.
(c)V2v
(LT^-1)^2 × L^2 T^-1
= L^4 T^-3
(d) V/(lv)
LT^-1/(LL^2 T^-1)
= L^-2
