The strong nuclear force is ___
2 answers:
Answer:
(A). is correct option.
Explanation:
Strong nuclear force :
There are four fundamental forces in the universe.
1. Strong nuclear force
2. Weak nuclear force
3. Gravitational force
4. Electromagnetic force
Strong nuclear force is 137 times strong as electric force and 1 million times strong as weak interaction force.
The range of strong force is .
Strong nuclear force is the attractive force which acts on the neutrons and protons in the nucleus. It acts on shorter distance.
It is more than 100 times strong than the electric force of repulsion.
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Let us consider two vectors A and B.
As per the question, the two vectors are perpendicular to each other.
Hence the angle between them
We are asked to calculate the resultant of these two vectors.
As per parallelogram law of vector addition, the resultant of two vectors are-
[cos90=0]
This is the way by which we can add two perpendicular vectors.
Answer:
The maximum height the box will reach is 1.72 m
Explanation:
F = k·x
Where
F = Force of the spring
k = The spring constant = 300 N/m
x = Spring compression or stretch = 0.15 m
Therefore the force, F of the spring = 300 N/m×0.15 m = 45 N
Mass of box = 0.2 kg
Work, W, done by the spring = and the kinetic energy gained by the box is given by KE =
Since work done by the spring = kinetic energy gained by the box we have
=
therefore we have v =
=
=
= 5.81 m/s
Therefore the maximum height is given by
v² = 2·g·h or h = =
= 1.72 m