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jekas [21]
3 years ago
12

How would the weight of a 7-kilogram concrete block compared to the weight of a 7-kilogram metal sphere?

Physics
2 answers:
Hitman42 [59]3 years ago
3 0

Answer:

C. The block and the sphere would have the same weight.

Explanation:

If both the block and the sphere weigh 7 kilograms then they have the same weight. They may look different, but they both weigh 7 kilograms.

ANTONII [103]3 years ago
3 0
C is correct

Sorry if I’m wrong
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A beam of light with a wavelength 760 nm in air travels in water. The index of refraction of water is 1.33. What is the waveleng
BabaBlast [244]

Answer:

<em>The wavelength of water = 571.43 nm</em>

Explanation:

Refractive index of water = wave length of light in air/wave length of light in water

R.d = λ₁/λ₂.................. Equation 1

making λ₂ the subject of equation 1

λ₂ = λ₁/R.d...................... Equation 2

R.d = refractive index of water , λ₁ = wave length of light in air, λ₂ = wave length of light in water

<em>Given: R.d = 1.33, λ₁ = 760nm</em>

<em>Substituting these values into equation 2</em>

λ₂  = 760/1.33

<em>λ₂  = 571.43 nm</em>

<em>Therefore the wavelength of water = 571.43 nm</em>

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Me kitten runs 40 meters in 8 seconds what is his speed?
AfilCa [17]
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A jogger runs at a constant rate of 10.0 m every 2.0 seconds. The jogger starts at the origin and runs in the positive direction
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Answer:

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Explanation:

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As distance=(speed) x (time)

So, d=vt

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As the jogger starts from origin, so, the distance, d, also represents the position of the jogger at the time t s.

The position-time graph has been shown.

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d=5\times 5=25 m

So, the jogger is at a distance of 25 m from the origin.

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d=5\times 15=75 m

So, the jogger is at a distance of 75 m from the origin.

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