Hey! My name is Byron. I currently live in El Paso, Texas and feel like I really don't fit in. I hate the climate AND the cultur
2 answers:
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Answer:5
Explanation:
Given
First Plate has a charge of +Q and area A
Second Plate has a charge of -3 Q and area A
We Know electric Field due to sheet charge is given by
Where Q=charge over the Plate
A=Area of plate
= Permittivity of free space
Electric Field Due to Positive charge will always be away from it while for negative charge it is towards it.
Net Electric Field at a point between between the Plates is the superimposition of two electric with direction
Net electric Field is towards the negative charged plate
Answer:
0.45 miles
Explanation:
since, car will be running on the edge of track, distance covered in one lap by car will be equal to circumference of track.\
we will use value of pi as 22/7
Circumference for any circular shape is given by
Hence, in one lap distance will be covered
in 7 laps distance will be covered.
but is given that 7 laps should be equal to 10 miles
so 10 miles will be equal to
Thus, diameter of track will be 0.45 miles to meet the requirement.
Answer:
<em>The hotter star radiates 625 times more energy per second from each square meter of its surface</em>
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Explanation:
Temperature of the hotter star is 30000 K
temperature of the cooler star = 6000 K
From Stefan-Boltzmann radiation laws, for a non black body
P = εσA
where
P is the energy per second or power of radiation
ε is the emissivity of the body
σ is the Stefan-Boltzmann constant of proportionality
A is the area of the sun
T is the temperature of the sun
The sun can be approximated as a black body, and the equation reduces to
P = σA
For the hotter body,
P = σA() = 8.1 x 10^17σA J/s
For the cooler body,
P = σA() = 1.296 x 10^15σA J/s
comparing the two stars energy
==> (8.1 x 10^17)/(1.296 x 10^15) = 625
<em>This means that the hotter star radiates 625 times more energy per second from each square meter of its surface</em>
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