Answer:
Transformers use “electrical steel” alloys. ... From 1% to 6.5% silicon is added, as well as a small amount (up to 0.5%) of manganese and aluminum to reduce brittleness in alloys with higher percentages of silicon. Electrical steels are formulated and processed to have low hysteresis and eddy-current losses.
Explanation:
The eddy currents consume energy and heat the iron core. The designers of the electrical machines and transformers laminate the core with thin sheets of iron coated with a thin oxide layer.
Answer:
0.87 m
70.6 Hz
Explanation:
= length of the rope = 1.30 m
= order of the harmonic = 3
= Wavelength
Wavelength is given as
= 0.87 m
= Speed of transverse wave = 61.4 m/s
= frequency of the third harmonic
frequency is given as
= 70.6 Hz
Answer:
It takes 77 N
Explanation:
Using Newton's second law of motion, F=ma (Force equals mass times acceleration. Since the mass of the couch is 385 kg and the target acceleration is 0.2 m/s, you simply multiply mass times acceleration (ma) to get the total force, or 77 N.
Mechanical waves nees a material medium to propagate
Electromagnetic waves can propagate in vaccum
