Set up the problem with the conversion rates as fractions where when you multiply the units cancel out leaving the desired units behind.
Green light (520 nm) enters glass with n = 1.52. What is speed of light in the glass?
1 answer:
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<h2>Answer:7.14
,4.125</h2>
Explanation:
Whenever an object is moving in a 2D frame,its motion can be analysed as if it is travelling in two independent 1D frames.
One of such independent 1D frames are along horizontal and another along vertical.
Let be the total velocity.
Given that,
We call the horizontal velocity as and the vertical velocity as
.
=
where is the angle between the object and horizontal.
It is given that
The spring has been stretched 0.701 m
Explanation:
The elastic potential energy of a spring is the potential energy stored in the spring due to its compression/stretching. It is calculated as
where
k is the spring constant
x is the elongation of the spring with respect to its equilibrium position
For the spring in this problem, we have:
E = 84.08 J (potential energy)
k = 342.25 N/m (spring constant)
Therefore, its elongation is:
Learn more about potential energy:
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