A480-kilogram horse runs across a field at a rate of 40 km/hr. what is the magnitude of the horse's momentum?
a) 12 km/hr
b) 19,200 km/hr
c) 19,200 kg x km/hr
d) 12 kg x km/hr
the law of reflection states that the angle of reflection is equal to the angle of inkidence .
answer: the potential difference across the resistor is 12 volts.
to calculate the potential difference cross the resistor, we use ohm's law. this law states that the potential difference across two wires is directly proportional to the current flowing through that wire.
v = potential difference = ? v
i = current flowing = 1.2 a
r = resistor =
putting values in above equation, we get:
hence, the potential difference across the resistor is 12 volts