Reflection is a wave bouncing back to its source
Answer: 95N
Explanation:
Force necessary to stretch a spring = ?Extension of spring, e = 0.5 m
Spring constant, k = 190 N/m
Apply the formula for Hooke's law,
Force = Spring constant x extension
i.e F = ke
F = 190 N/m x 0.5 m
F = 95 N
Thus, 95 Newton of force is necessary to stretch the spring
Answer:
(a) 21.11 J
(b) 3.3 m/s
Explanation:
(a)
m = mass attached to the spring = 3.95 kg
A = amplitude of the oscillation = 19 cm = 0.19 m
T = Time period of oscillation = 0.365 s
U = Total mechanical energy
Total mechanical energy is given as
U = 21.11 J
(b)
v = maximum speed of the mass
maximum speed of the mass is given as
= 3.3 m/s
The atmosphere<span> can be </span>divided into<span> four </span>layers<span> based on temperature variations. The </span>layer<span> closest to the Earth is called the troposphere. Above this </span>layer<span> is the stratosphere, followed by the mesosphere, then the thermosphere.</span>
Answer: 5.71kg and 10.33N
Explanation:
Recall,
Weight =mass × g
Where w = 56.0 N , g = 9.8 m/s2
56= m × 9.8
M = 56/9.8
M = 5.71 kg
At the surface of the moon, the mass still remains 5.71kg because it is a fundamental quantity it does not change irrespective of position.
Weight at the moon surface will change as a result of change in gravity. Hence, weight = mg
Where g=1.81m/s2, m= 5.71
W = 5.71×1.81
W = 10.33N