Answer:
4.9 N/m
Explanation:
m = 0.1 kg
x = 0.2 m
Let k be the spring constant.
As teh weight is balanced by the tension in the spring
Weight = force = mass x acceleration due to gravity
F = m x g = 0.1 x 9.8 = 0.98 N
This force si balanced by spring force
F = k x
Where, k be the spring constant and x be the displacement in spring
0.98 = k (0.2)
k = 4.9 N/m
The concave mirror is a spherical-shaped mirror that has an inner curved surface. Hence, option (4) is correct.
What is a concave mirror?
The concave mirrors are spherical-shaped mirrors that are painted on the outward surface. It is also known as the converging mirror, having the recessed inner reflecting surface.
- The concave mirrors are generally used for the purpose to focus the light. For that, they might have a reflecting surface, curved inwards, and the reflection of light is limited to the single focal point.
- The reflecting surface of the concave mirror has its vertex or midpoint lying farther away from the objects than the edges.
Thus, we can conclude that the surface of the concave mirror is curved inward. Hence, option (4) is correct.
Learn more about the concave mirror here:
brainly.com/question/13300307
Ice, when matter is solid particles are closer together.
<u>Answer</u>
= 100 miles per hour.
<u>Explanation</u>
Velocity is the rate of change of displacement.
Velocity = Distance /time taken
= 500/5
= 100 mile per hour.