Answer:
Explanation:
The unknown charge can not remain in between the charge given because force on the middle charge will act in the same direction due to both the remaining charges.
So the unknown charge is somewhere on negative side of x axis . Its charge will be negative . Let it be - Q and let it be at distance - x on x axis.
force on it due to rest of the charges will be equal and opposite so
k3q Q / x² =k 8q Q / (L+x)²
8x² = 3 (L+x)²
2√2 x = √3 (L+x)
2√2 x - √3 x = √3 L
x(2√2 - √3 ) = √3 L
x = √3 L / (2√2 - √3 )
Let us consider the balancing force on 3q
force on it due to -Q and -8q will be equal
kQ . 3q / x² = k3q 8q / L²
Q = 8q (x² / L²)
so charge required = - 8q (x² / L²)
and its distance from x on negative x side = √3 L / (2√2 - √3 )
Answer:
volume : {l}^3
speed: (l)^1*(t)^-1
Explanation:
Volume is a measure of 3 dimensional space. It is expressed with 3 orthogonal lengths. The volume of a box would be the product of it's height, width and length. These 3 are longitudes that can be expressed in meters, feet, inches, etc. Because these are 3 longitudes multiplied the result will be a cubic longitude (l)^3.
A more general method for finding a volume is to use integral calculus:
This is for Cartesian coordinates. Cylindrical and spherical coordinates can also be used.
Speed is defined as the rate of change in position respect of time:
For movement in one dimension.
For movement in 3 dimensions you calculate the speed component of each space direction and express them as components of a speed vector:
This is a vector of velocity components, each one is expressed as a division of a longitude over a time, so speed components have dimensions of (l)^1*(t)^-1
The speed vector has a magnitude that is obtained with the Pitagoras theorem:
Since each component is squared, added together and then the square root is taken this magnitude is also in (l)^1*(t)^-1
Answer:
<em><u>1- The graph provides a comparison of the different marketing strategies</u></em>
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<em><u>2- The graph helps in selecting the best marketing strategy to improve sales</u></em>
Explanation:
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Answer:
Because the size of the star has expanded, the surface cools down and goes from white-hot to red-hot. Because the star is brighter, redder and physically larger than before, we dub these stars "red giants"
The layers have different ages with the youngest layers on top.
Explanation:
Geologic records can be analyzed by merely looking at different layers because, the layers have different ages with the youngest layers on top and the oldest at the bottom.
- Layers of rocks that can be analyzed this way are the sedimentary rocks.
- Sedimentary rocks are formed by the lithificatiion and compaction of sediments in their basin of deposition.
- According to one of the fundamental principles in geology, "in an undisturbed sequence of sediments, the oldest rock layer is at the bottom and the youngest is on top".
- This principles is the principle of superposition of sedimentary strata.
- It helps in relative dating of sedimentary rocks.
Learn more:
Sedimentary rocks brainly.com/question/9131992
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