Answer:
We know that , mechanical advantage of lifting machine is
MA = W / P
For maximum mechanical advantage, we can substitute the value of P = mW + C
Explanation:
im not too sure about this one tho but i hope it helps
The sun's radiation is made up of rays of many different wavelengths.
Explanation:
Explanation:
Y = 5 Sin27(.2x-3t)
= 5 Sin(5.4x - 81 t)
Amplitude = 5 m
Angular frequency w = 81
frequency = w/ 2π = 81/(2 x 3.14)
-12.89
Wave length λ = 2π/ k,
k = 5.4
λ = 2π/ 5.4
= 1.163 m
Phase velocity=w / k
= 81/5.4
15 m/s.
The wave is travelling in + ve x - direction.
hope help
Complete Question:
A hollow cylinder with an inner radius of 4.0mm and an outer radius of 30mm conducts a 3.0-A current flowing parallel to the axis of the cylinder. If the current density is uniform throughout the wire, what is the magnitude of the magnetic field at a point 12mm from its center?
Answer:
The magnitude of the magnetic field = 7.24 μT
Explanation:
Inner radius, a = 4.0 mm = 0.004 m
Outer radius, b = 30 mm = 0.03 m
Radius, r = 12 mm = 0.012 m
let h² = b² - a²
h² = 0.03² - 0.004²
h² = 0.000884
Let d² = r² - a²
d² = 0.012² - 0.004²
d² = 0.000128
Current I = 3A
μ = 4π * 10⁻⁷
The magnitude of the magnetic field is given by:

B = 7.24 * 10⁻⁶T
B = 7.24 μT