Answer:
the relationship between the voltage and the resistance is linear,
light bulb. a lot of energy to be in the system in the form of electromagnetic radiation and heat, this loss of energy is the cause of the loss of the linearity of ohm's law.
Explanation:
When you study ohm's law
V = i R
You observe that the relationship between the voltage and the resistance is linear, so the law of compliance, when you used a resistor, the law was fulfilled, the resistor did not heat up significantly.
When you used the bulb, the resistance values is small, so the passing current is high and the filament heats up significantly, to the point of emitting light, so the resistance can linearity. This is because the collisions between the electrons and the atoms is very frequent creating excitations and de-excitations that cause a lot of energy to be in the system in the form of electromagnetic radiation and heat, this loss of energy is the cause of the loss of the linearity of ohm's law.
The answer is D, by adding the most water you will get the most diluted solution.
Answer: D(t)= 50(4/5)^t
Explanation: If 1/5 of the temperature difference is lost each minute, that means 4/5 of the difference remains each minute. So each minute, the temperature difference is multiplied by a factor of 4/5 (or 0.8).
If we start with the initial temperature difference, 50° Celsius, and keep multiplying by 4/5, this function gives us the temperature difference t minutes after the cake was put in the cooler.
Answer:
t=2s
Explanation:
The definition of power is:
And the work-energy theorem states that:
Since the movement starts from rest, we have that:
And putting all together:
Since we want the time taken:
Which for our values is: