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weeeeeb [17]
2 years ago
7

A light-year is a measure of the astronomical distance that light traverses in a vacuum in 1 year. (a) how many kilometers does

light traverse in 1 ly?
Physics
1 answer:
const2013 [10]2 years ago
5 0
<span>A light-year is the total distance that light can travel in 1 year. Since, We know the speed of light (c) in vacuum= 299792458 metres per second And, there are 365.25 days in an year, or t= (365.25*24*60*60) seconds Hence a light-year (d)=c*t =299792458Ă—365.25Ă—24Ă—60Ă—60 metres =9,460,730,472,580,800 metres â‰9.46073Ă—10^15 metres</span>
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What % of an object’s mass is above the water line if the object’s density is 0.82g/ml?
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To develop this problem we will apply the Archimedes model. As well as the definitions of Weight based on mass and acceleration. The first in turn will be considered under the relationship of Density and Volume. From the values given we have to:

\rho_w =1 g/mL \rightarrow \text{Water Density}

\rho_o = 0.82g/mL \rightarrow \text{Object density}

Since it is in equilibrium, the weight of the object will have a reaction from the water, which will cause the sum of forces between the two objects to be zero, therefore

\sum F= 0

F_w-F_o = 0

F_w = F_o

m_w g = m_og

\rho_w V_w g = \rho_o V_o g

The value of gravity is canceled because it is a constant

\frac{V_w}{V_o} = \frac{\rho_o}{\rho_w}

\frac{V_w}{V_o} = \frac{0.82}{1}

\frac{V_w}{V_o} = 0.82

The portion of the object that is submerged corresponds to 82%, while the portion that is visible, above the water level will be 18%

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What is the number of the lowest energy level that contains an f sublevel?. . 3. . 4. . 5. . 6
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What is the gauge pressure in Pascals inside a honey droplet of a 0.1 cm diameter? Assume that air is surrounding this droplet a
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Answer:

The gauge pressure in Pascals inside a honey droplet is 416 Pa

Explanation:

Given;

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surface tension of honey, γ = 0.052 N/m

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