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Lubov Fominskaja [6]
3 years ago
10

If a rock has a density of 2g/cm³ and a volume of 8cm³, what is its mass?

Physics
1 answer:
Yakvenalex [24]3 years ago
3 0
Density=mass÷volume
mass=density×volume
mass=2×8=16 g
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Predict the deformation or elongation of a spring that has a constant of elasticity of 400 N/m when a force of 75 N is applied i
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Answer:

Explanation:

Give that,

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Since the force is applied to the right, we don't know if it is compressing or stretching the spring

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Using hooke's law

F=-ke

e=-F/k

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Answer:

138.3 days

Explanation:

Given that a Planet Ayanna has a radius of 6.2 X 10%m and orbits the star named Dayli in 98 days. A new neighboring planet Clayton J-21 has been discovered and has a radius of 7.8 X 10 meters.

The period of time for Clayton J-21 to orbit Dayli can be calculated by using Kepler law.

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That is,

T^2/r^3 = constant

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Make T^2 the subject of formula.

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4 0
3 years ago
determine the maximum angle theta for which the light rays incident on the end of the optical fiber of radius 1 mm are subhect t
Vesna [10]

Answer:

Explanation:

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i = 42°.  

7 0
3 years ago
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