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EleoNora [17]
4 years ago
14

1. Discuss some of the dangers and obstacles that Nyad faced when sw

Physics
1 answer:
balu736 [363]4 years ago
7 0
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A 235 kg motorcycle moves with a velocity of 7 m/s. What's it's kenetic energy?
antiseptic1488 [7]
The non-relativistic formula for low speed  v < 0.1c is:

K.E = 0.5mv^2 = 0.5 * 235 * (7)^2 = 5757.5 J
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3 years ago
A city bus travels 6 blocks east and 8 blocks north. Each block is 100 m long. If the bus travels this distance in 15 minutes, w
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Answer:

1.56 m/s

Explanation:

For East direction, the 6 blocks is equivalent to 6*100=600 m

For West direction, 8 blocks is equivalent to 8*100=800 m

Speed is given by s=d/t where s is speed, d is distance covered and t is time taken

Total distance is 600+800=1400m

Time taken is 15 mins, converted to seconds will be 15*60=900 s

Speed, s=1400/900=1.5555555555555 m/s rounded off as 1.56 m/s

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3 years ago
What resource is used to make fertilizers and other products such as toothpaste and insecticides
kirza4 [7]

Answer:

option B. Limestone

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6 0
2 years ago
A fiber-optic rod consists of a central strand of material surrounded by an outer coating. The interior portion of the rod has a
matrenka [14]

Answer:

The refractive index of the outer coating is 1.52.

Explanation:

Refractive index of interior part, n' = 1.97

critical angle, C = 50.4°

Let the refractive index of the coating is n.

Use the Snell's law,  

n\times sin r = n'\times sinC\\\\n\times sin 90 = 1.97 \times sin 50.4\\\\n = 1.52

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3 years ago
When a hypothesis is proven wrong, scientists often begin by revising the . After that, it’s common for scientists to redesign t
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