Answer:we can drive the formula for relative speed using the formula of gravitational force.
Explanation:
Answer:
false
Explanation:
The car would not move unless being pushed or dragged
Answer:
22.5J
Explanation:
Here the force is given. Also, the displacement is given as 30cm.
First we should check if all the values are in their standard form.
Here 30cm should be converted to metre by dividing it with 100.
Which would give us 0.3m
Now we use the equation W=force x displacement =75 x 0.3=22.5J
I hope this satisfies you. If u have any further questions please let me know.
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Answer:
The ratio of the speed of light in a vacuum to the speed of light in the material it is passing through
Explanation:
- Index of refraction also called refractive index is the ratio of the sine of angle of incidence to the sine of angle of refraction, this is according to the Snell's Law.
- <u>The value of index of refraction</u> may be calculated from the ratio of the speed of light in vacuum to the speed of light in a second medium of a greater density.
- Therefore,<em><u> refractive index refers to the speed of light in a vacuum divided by the speed of light in the medium.</u></em>