Answer:
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The right formula to use is: T^2= 2d/g
where T= time taken
d = 12.5m
g = is a constant and is equal to 9.8m/s
therefore, T^2 = 2*12.5/9.8
Using the values above, the time taken for the acorn to reach the ground is 1.59 second
T = 1.59 S
B!
This is because gravitational pull energy needs a height. The higher the height the higher the energy.
<u>series </u>
current same to all resistors
p.d is divided to each resistors depending on their resistivity
V = IR the resistor which have more resistance (also resistivity) gain more p.d
<u>parallel
</u> p.d is same to all components
<u /> current is divided to each resistor depending on their resistivity
I = V/R more current flows through one with less resistance (also resistivity)
here as it is series connection,<u>current is same</u> to all resistors irrespective of their resistance