Given the index of refraction, n and speed of light in the vacuum, c, we can solve for the speed of light in the transparent substance by the equation below.
n = c / v
where v is our unknown.
Substituting the known values,
1.7 = (3 x 10^8 m/s) / v
The value of v is equal to 1.76 x 10^8 m/s.
Answer:
A) do a greater amount of work than the amount of work done on the machine
Explanation:
By the principle of conservation of energy, energy can never be created or destroyed.
To do more work by a machine than the amount of work done on the machine is impossible because to do so machine will have to create energy within itself which violates the principle of conservation of energy.
Extra bit,
These kind of machine are defined as perpetual-motion machines and there are many attempts in history to create one such device but all were failed.
Answer:
The straight line
Explanation:
All the other stuff is sound waves
Answer: The ice cube would float on top of the water and the rock would sink to the bottom.
Explanation: The ice cube has a smaller density than the rock which allows the ice cube to float but makes the rock sink to the bottom of the glass of water.
The answer would be 70. I got my answer from www.iun.edu
