When describing voltage, current, and resistance, a common analogy is a water tank. In this analogy, charge is represented by the water amount, voltage is represented by the water pressure, and current is represented by the water flow.
Answer:
voltage drop
Explanation:
Voltage drop is the decrease of electrical potential along the path of a current flowing in an electrical circuit. Voltage drops in the internal resistance of the source, across conductors, across contacts, and across connectors are undesirable because some of the energy supplied is dissipated.
Furthermore, wires carrying current always have inherent resistance, or impedance, to current flow. Voltage drop is defined as the amount of voltage loss that occurs through all or part of a circuit due to Impedance/resistance.
Answer:
option B is the correct option
Explanation:
According to momentum conversion,
momentum of one car= 6600×2=13,200kgm/s
momentum of another car=5,400×(-3)=16,200kgm/s
Then,
Momentum of second car-momentum of first car
=16,200-13200
=3000kgm/s
mass of first car -mass of second car
=6600-5400
=600kg
final velocity=3000/600=2.5 m/s
Answer:
4.3 m/s
Explanation:
a = rate at which the automobile loses speed = - 7.2 m/s²
v₀ = initial maximum speed of automobile
t' = reaction time for applying the brakes = 0.55 s
d = distance available for stopping the vehicle = 3.6 m
d' = distance traveled while applying the brakes = v₀ t' = (0.55) v₀
v = final speed after the vehicle comes to stop = 0 m/s
Using the equation
v² = v₀² + 2 a (d - d' )
0² = v₀² + 2 (- 7.2) (3.6 - (0.55) v₀)
v₀ = 4.3 m/s