Let's think about the meaning of k, the spring's constant. Hooks law states:
or, rewriting it:
where F is the force applied by the spring when we compress/release it of a certain amount of displacement x.
As we can see from the formula, the higher the value of k, the stronger is the force of the spring when we compress it of a certain fixed value x, so it will be more difficult to compress it with respect to a spring with smaller k. This means that the higher k, the stiffer is the spring.
Answer
A is the correct answer
Explanation:
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Answer:
50% of unpolarised light passes through the first filter because, on average, 50% of the waves are aligned with the fiter's axis. Intensity is reduced by a factor 0.5.
The second filter then reduces the intensity by a factor cos²(θ)
Explanation:
Answer:
Radio waves are the lowest frequency
Explanation:
Here is the order of frequencies highest to lowest to help you in the future:
gamma rays
X-rays
ultraviolet radiation
visible light
infrared radiation
radio waves