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GalinKa [24]
3 years ago
12

How many nanoseconds does it take light to travel 3.00 ft in vacuum?

Physics
2 answers:
qaws [65]3 years ago
6 0
3ft is about 1m so approximately 3 nano seconds,
uranmaximum [27]3 years ago
5 0

Answer:

Three nanoseconds is the correct answer.

Explanation:

A nanosecond (also abbreviated as <em>ns</em>) is a unit of time that is equal to one billionth of a second. The word uses the prefix <em>nano</em> combined with the basic unit for one-sixtieth of a minute. It takes approximately one nanosecond to travel one feet, sot, the correct answer is three nanoseconds.

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A cylindrical, 0.500-m rod has a diameter of 0.02 m. The rod is stretched to a length of 0.501 m by a force of 3000 N. What is t
Salsk061 [2.6K]

Answer:

Y = 4.775 x 10⁹ Pa = 4.775 GPa

Explanation:

First, we calculate the stress on the rod:

stress = \frac{Force}{Area} = \frac{3000\ N}{\pi r^2}  \\\\stress = \frac{3000\ N}{\pi (0.01\ m)^2}\\\\stress = 9.55\ x\ 10^6\ Pa = 9.55 MPa\\

Now, we calculate the strain:

strain = \frac{Change\ in Length}{Original\ Length}\\\\strain = \frac{0.501\ m - 0.5\ m}{0.5\ m}\\\\strain =  0.002\\

Now, we will calculate the Young's Modulus (Y):

Y = \frac{stress}{strain}\\\\Y = \frac{9.55\ x\ 10^6\ Pa}{0.002} \\

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