Answer:
0.00225 N/m
Explanation:
Parameters given:
Current in first wire, I(1) = 15A
Current in second wire, I(2) = 15A
Distance between two wires, R = 1cm = 0.01m
The force per unit length between two current carrying wires is:
F/L = μ₀I(1)I(2)/2πR
μ₀ = 4π * 10^(-7) Tm/A
F/L = [4π * 10^(-7) * 15 * 15] / (2π * 0.01)
F/L = 2.25 * 10^(-3) N/m or 0.00225 * 10^(-3) N/m
Answer:
The total distance the bird travels is d.
Explanation:
Each train travels at the speed s. They will meet at the center, a distance d/2 (which is where the bird might be crushed). Each train travels the same distance d/2 in a time t which is also equal for both. This is also the time the bird spends travelling between them.
For any of the train, the time t is the distance divided by the speed.
The bird travels at the speed of 2s. Its distance is given by the product of its speed and the time taken.
Answer:
0.358 kg
Explanation:
From simple harmonic motion,
T = 2π√(m/k)................ Equation 1
Where T = period of the spring, k = spring constant of the spring, m = mass suspended, π = pie
make m the subject of the equation
m = kT²/4π².................. Equation 2
Given: k = 15 N/m, T = 0.97 s, π = 3.14
Substitute into equation 2
m = 15(0.97²)/(4×3.14²)
m = 14.1135/39.4384
m = 0.358 kg.
Hence mass suspended = 0.358 kg
Answer:
A. Muscular endurance
Explanation:
Muscular endurance is measured by the amount of time a muscle group can sustain a contraction.