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vekshin1
3 years ago
6

A 100-n object and a 50-n object are placed on scales a and b respectively inside an elevator ascending with constant velocity

3.0m/s which statement below correctly describes the readings on the scales inside the elevator
Physics
1 answer:
german3 years ago
8 0

Answer: b

Explanation:

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It states that no form of energy can be created nor destroyed over time it is just conserved. 

Official Definition- <span>In physics, the </span>law of conservation of energy<span> states that the total </span>energy<span> of an isolated system remains constant—it is said to be conserved over time. </span>Energy<span> can neither be created nor destroyed; rather, it transforms from one form to another.</span>
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the minimum flying speee for a bird called a house martin is 9.0ms^-1. it reaches this speed by falling from its nest before swo
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Answer:

The nest must be about  4.15 meters above ground

Explanation:

Use the velocity equation under accelerated motion (acceleration of gravity ):

v_f=v_i+a\,*\,t

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v_f=v_i+a\,*\,t\\9=0+9.8\,t\\t=\frac{9}{9.8} \, sec\\t \approx 0.92\,\, sec

We now use this time value to find the distance covered in free fall during 0.92 seconds:

d=\frac{1}{2} \,9.8 \,t^2=4.9\,(0.92)^2=4.147 \,meters\approx 4.15\,meters

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Suppose we have two planets with the same mass, but the radius of the second one is twice the size of the first one. How does th
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The free-fall acceleration on the second planet is one-fourth the value of the first planet.

Calculation:

Consider the mass of planet A to be, M

               the mass of planet B to be, Mₓ = M

               the radius of planet A to be, R₁

               the radius of planet B to be, R₂

The acceleration due to gravity on planet A's surface is given as:

g = GM/R₁²      - (1)

Similarly, the acceleration due to gravity on planet B's surface is given as:

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   = GM/4R₁²    -(2)

From equation 1 & 2, we get:

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g/g' = 4/1

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g' = 1/4 g

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Learn more about free-fall here:

<u>brainly.com/question/13299152</u>

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