Answer:
Power, P is equal to 10 watts.
Explanation:
Given the following parameters;
Voltage drop, V = 50volts.
Resistance, R = 250ohms.
Power, P =?
The power developed in an electrical circuit is given by;
......equation 1
But we also know that;
Ohm's law states that at constant temperature, the current flowing in an electrical circuit is directly proportional to the voltage applied across the two points and inversely proportional to the resistance in the electrical circuit.
Mathematically, V = IR
Making I the subject of formula;
I = V/R
Substituting into equation 1;
P = (50²)/250
P = 2500/250
P = 10 watts.
Answer:
The conductivity of the material from which the conductor is made is 2.95 x10⁶ [S. m⁻¹] .
Explanation:
L= 1.1m
S= 0.91 mm²= 9.1 x10⁻⁷ m²
I= 4.4 A
V= 1.8V
R=9/22Ω
Conductivity=2.95 x10⁶ [S. m⁻¹]
Answer:
The extension of a material or a spring is its increase in length when pulled. Hooke’s Law says that the extension of an elastic object is directly proportional to the force applied to it. In other words:
Explanation:
What is a projectile give example?
The motion of such a particle is called Projectile Motion. In the above diagram, where a particle is projected at an angle θ, with an initial velocity u.
...
Few Examples of Two – Dimensional Projectiles.
Answer
F = 124 N
Explanation:
given,
mass, m = 5 Kg
time, t = 4.1 s
displacement = y(t)=(2.80 m/s)t +(0.61 m/s³)t³
velocity
again differentiating to get the equation of acceleration
force at time t = 4.10 s
F = m a
F = 5 x 3.66 x 4.1
F = 75 N
the net force when crate is moving upward
F = Mg + Ma
F = 5 x 9.8 + 75
F = 124 N
the magnitude of force is equal to 124 N
