A15-ω resistor is connected in parallel with a 30-ω resistor. if this combination is now connected in series with an ideal 9.0-v battery and a 20-ω resistor, what is the current through the 15-ω resistor?

0.2 A

Explanation:

First of all, let's find the total resistance of the two resistors in parallel:

This combination is then connected in series with the other resistor, so the total resistance of the circuit is

Then we can calculate the total current in the circuit

This current flows through the resistor of 20-Ω, then it splits in the two branches of the 15-Ω and 30-Ω resistors.

The voltage drop across the resistor of 20-Ω is

So, the potential difference across the two resistors in parallel is

So, the current through the 15-Ω resistor is

explanation:

as the height from which the ruler was dropped increased, the speed of the ruler at ryan's hand increased.

  the unit of the measure =

explanation:

  the property that is quantified by the energy needed per of material to raise the temperature by one.

  si unit of energy = joule (j)

  si unit of temperature = kelvin (k)

  si unit of mass of material = kilogram (kg)

the property that is quantified by the energy needed per of material to raise the temperature by one is called specific heat.

the unit of specific heat is