All o the galaxies are moving in a same speed
Answer:
hi the question isn't obvious and need a photo I guess
Answer:
a. R2b = R/4
Explanation:
The total resistance of a metallic wire is given by the following formula:
R = ρL/A
where,
R = Resistance of Wire
ρ = Resistivity of the material of wire
L = Length of Wire
A = Area of Wire = πr²
Therefore,
R = ρL/πr²
for the 1st wire,
radius = r = b
Therefore,
R = ρL/πb² ----------- equation 1
Now, for the second wire,
r = 2b
Therefore,
R2b = ρL/π(2b)²
R2b = ρL/πb²4
using equation 1:
R2b = R/4
therefore, correct option is:
<u>a. R2b = R/4</u>
Answer:
vacuole
Explanation:
Remember vacuoles in plant cells are a lot bigger than there animal cell counterparts.
Answer:
Interstellar Dust
Explanation:
In the solar system Interstellar dust is a type of cosmic dust and unlike Interstellar gas they have large dust particles enabling them to block visible light. Unlike smoke and fog, they contain large number of closely packed clumps of atoms and molecules
