Answer:
1.72m
Explanation:
Step 1:
Data obtained from the question.
Displacement (x) = 0.15 m
Spring constant (K) = 300 N/m
Mass (m) = 0.2 kg
Height (h) =?
Step 2:
Determination of the energy in the spring.
The energy is a spring can be obtained by the following equation:
E = 1/2 kx^2
E = 1/2 x 300 x 0.15^2
E = 150 x 0.0225
E = 3.375J
Step 3:
Determination of the maximum height.
At maximum height, the energy stored is the spring is equal to the potential energy i.e
Energy stored in the string = potential energy
E = P.E
Recall:
Potential energy = mgh
Where:
m is the mass = 0.2kg
g is the acceleration due to gravity = 9.8m/s2
h is the height. =?
Potential energy (P.E) = 3.375J
PE = mgh
3.375 = 0.2 x 9.8 x h
Divide both side by 0.2 x 9.8
h = 3.375/ (0.2 x 9.8)
h = 1.72m
Therefore, the maximum height of the box is 1.72m
Answer: I think that it is False, if its wrong I am sorry.
Explanation:
Answer:
22 degree
Explanation:
Angle of incidence, i = 30 degree
the refractive index of water with respect to air is 4/3.
As the ray of light travels from rarer medium to denser medium, that mean air to water, the refraction takes place.
According to Snell's law,
Refractive index of water with respect to air = Sin i / Sin r
Where, r be the angle of refraction
4 / 3 = Sin 30 / Sin r
0.75 = 2 Sin r
Sin r = 0.375
r = 22 degree
Thus, the angle of refraction is 22 degree.
