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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The new velocity after 4 s is 40 m/s
The height of the spaceship above the ground after 5 seconds is 1,127.5 m
The given parameters for the first question;
- initial velocity of the car, u = 76 m/s
- acceleration of the car, a = - 9 m/s²
- time of motion, t = 4 s
The new velocity after 4 s is calculated as;
v = u + at
v = 76 + (-9)(4)
v = 76 - 36
v = 40 m/s
(5)
The given parameters;
- height above the ground, h = 500 m
- velocity of spaceship, u = 150 m/s
- time of motion, t = 5
The height of the spaceship above the ground after 5 seconds is calculated as;
Learn more here: brainly.com/question/24527971
Explanation:
Image distance, v = -17 cm (-ve for virtual image)
Radius of curvature of concave mirror, R = 39 cm
Focal length, f = -19.5 cm (-ve for a concave mirror)
(a) Using mirror's formula as :
u = 132.6 cm
So, the object is placed 132.6 cm in front of the mirror.
(b) Magnification of the mirror,
m = -0.128
Hence, this is the required solution.