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lana [24]
2 years ago
14

A woman with a mass of 60 kg climbs a set of stairs that are 3m high How much gravitational potential energy does she gain a res

ult of the climb?
Pls show your solution..
Physics
2 answers:
nikdorinn [45]2 years ago
7 0

Explanation:

a woman with a mass of 60 kg climbs a set of stairs that are 3m high How much gravitational potential energy does she gain a result of the climb?

Pls show your solution..

Serjik [45]2 years ago
3 0

Since,

P.Eg = mgh

m= 60kg

g = 9.8 m/s²

h = 3m

P.Eg = 60*9.8*3

P.Eg = 1764J or 1.764KJ

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Kobotan [32]
<h3>Question:</h3>

How to find g (acceleration due to gravity)

<h3>Solution:</h3>

We know,

Acceleration due to gravity (g)

=  \frac{GM}{ {R}^{2} }

where, G = Gravitational constant

= 6.67 \times  {10}^{11} N {m}^{2}/k {g}^{2}  \\

M = Mass of the earth

= 6 \times  {10}^{24} \:  kg

R = Radius of the earth

= 6.4 \times  {10}^{6} m

Putting these values of G, M and R in the above formula, we get

g \:  =  \:  \frac{6.67 \times  {10}^{11} N {m}^{2}/k {g}^{2}   \times \: 6 \times  {10}^{24} \:  kg }{(6.4 \times  {10}^{6}m {)}^{2}  }  \\  = 9.8m/ {s}^{2}

So, the value of acceleration due to gravity is

9.8m/s ^{2}

Hope it helps.

Do comment if you have any query.

5 0
3 years ago
A mass that weighs 10 lb stretches a spring 2.4 in. It rests in a liquid which imparts a dampening force of 4 pounds when the ve
forsale [732]

Answer:

The solution is attached in the pictures below

Explanation:

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Answer:

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dangina [55]

1) Medium "b" has more optical density

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Explanation:

1)

Refraction occurs when light propagates from a medium into a second medium.

The optical density of a medium is given by its index of refraction, which is defined as:

n=\frac{c}{v}

where

c is the speed of light in a vacuum

v is the speed of light in a medium

Higher index of refraction means higher optical density, and light propagater slower into a medium with higher optical density.

In this problem, light propagates faster through medium "a" than medium "b": this means that medium "a" has lower refractive index of medium "b", and so "b" has more optical density.

2)

We can answer this part by referring to Snell's law, which gives the relationship between the direction of the incident ray and of the refracted ray when light passes through the interface between two media:

n_1 sin \theta_1 = n_2 sin \theta_2

where

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Here we want the direction of propagation of the light ray not to change: this means that it must be

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However, here we have two mediums "a" and "b" with different index of refraction, so

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Therefore the only angle that can satisfy eq.(1) is

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So, the light must hit the surface perpendicular to the interface between the two mediums.

Learn more about refraction:

brainly.com/question/3183125

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#LearnwithBrainly

3 0
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aksik [14]

Answer:

B. Solids, liquids, and gases.

Explanation:

I have no explanation.

5 0
3 years ago
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