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Answer:
The resistance of the wire after being heated is approximately 1.15 times the resistance before being heated.
Explanation:
The resistance of the wire goes up as the temperature goes up.
By Ohm's law, we have the relationship between the resistance of a conductor R, the current flowing through it, I, and the voltage across it, V,
As described, the current through the wire decreases so, to maintain the same voltage, the resistance must increase when the wire is heated. Let's say R1 is the resistance before heating the wire and R2 is the resistance after,
Let's solve for R2,
In this case, I1 = 0.3A and I2 = 0.26A,
Hence, the <u><em>resistance of the wire after being heated is approximately 1.15 times the resistance before being heated.</em></u>
Answer:
4.4857 seconds
No
Explanation:
L = Length of the pendulum = 5 m
g = Acceleration due to gravity = 9.81 m/s²
Time period is given by
The optimum time interval in between the pushes is 4.4857 seconds
It can be seen that the mass of the child is not used in the formula and hence changing the mass would not result in a different time period.
The length of the pendulum and the acceleration of gravity of the planet determines the time period.
Answer:
W codziennym użytkowaniu i w kinematyce prędkość obiektu to wielkość zmiany jego ... Ten artykuł dotyczy własności ruchomych ciał. ... Ta prędkość po torze kołowym jest nazywana prędkością styczną, ponieważ kierunek ... Przesuń się trzy razy dalej i masz trzy razy większą prędkość styczną.
Explanation: