Because frame of reference decides are your forces positive or negative. It is important for the direction of motion.
Answer:
The current through the circuit element will also be doubled.
Explanation:
The relationship between voltage and current of a circuit element is given by Ohm's Law. According to Ohm's Law:
Voltage = (Resistance)(Current)
If the resistance of the element is kept constant, the relation between Voltage and Current through that element becomes as follows:
Voltage = (Constant)(Current)
Voltage α Current
Thus, the voltage is directly proportional to the current for constant value of the resistance.
Therefore, when the voltage across a circuit element of constant resistance is doubled, <u>the current through the circuit element will also be doubled.</u>
From my experience, I would say it is true.
Wave speed = (wavelength) x (frequency)
Wave speed = (3 m) x (15 Hz)
<em>Wave speed = 45 m/s</em>
