Douglas Stefanski’s spectacularly sleek hovercraft glides down a track of 36m. It takes 13 him seconds to cross the finish line.
1 answer:
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Answer:
1.5 g/cm^3
Explanation:
In the question i am assuming that wooden block of weight W floats with exactly one-half of its volume below the waterline.
Let ρ_{liquid} be the density of the unknown liquid , V= volume submerged
g= acceleration due to gravity
then
weight of block =
when the block is in water
Also,
weight of block =
dividing eq 1 by eq 2 we get
⇒
To solve this problem it is necessary to apply the concepts related to transformers, that is to say passive electrical device that transfers electrical energy from one electrical circuit to one or more circuits.
From the mathematical definition we have that the relationship between the voltage of the first coil and the second coil is proportional to the number of loops of the first and second loop, that is:
Where
input voltage on the primary coil.
input voltage on the secondary coil.
number of turns of wire on the primary coil.
number of turns of wire on the secondary coil.
Replacing our values we have:
Replacing,
From the same relations of number of turns and the voltage of the first and second coil we also have the relation of electricity and voltage whereby:
Where
= Current Primary Coil
= Current secundary Coil
Therefore:
Therefore the maximum values for the secondary coil of the voltage is 410.56V and Current is 1.87A