Answer:
1.41 × 10⁻⁵Ωm
Explanation:
Resistance of wire is defined by the formula
R = ρL / A
RA / L = ρ
using ohm's law
V = IR
R at 20°C = V / I = 14 / 18.2 = 0.769 ohms
RA / L = ρ
diameter = 0.55 cm = 0.55 / 100 in m = 0.0055 m
A = πr² = 3.142 × (0.0055 m/ 2 )² = 0.0000238 m²
ρ = ( 0.769 ohms × 0.0000238 m²) / 1.30 m = 1.41 × 10⁻⁵Ωm
Answer:
You could throw away the following items:
Mixed paper: Newspaper, magazine, junk mail, cardboard, frozen food packaging, wrapping paper, paper bags, etc.
Cans: aluminum, foil, tin, steal, aerosol (empty without pressure) and metal food trays. ...
Unbroken glass: Wine bottles, bottles and jars.
Plastic: Rigid containers like milk jugs, shampoo or water bottles.
Hope this helped
Answer:
hearing range for a healthy young person is 20- 20,000 hertz. The highest frequency for a normal middle aged man is 12-14 kilohertz.
The answer is true
Step by step explanation:
Answer:
The air-water interface is an example of<em> </em>boundary. The <u><em>transmitted</em></u><em> </em> portion of the initial wave energy is way smaller than the <u><em>reflected</em></u><em> </em> portion. This makes the <u><em>boundary</em></u> wave hard to hear.
When both the source of the sound and your ears are located underwater, the sound is louder because the sound waves can <u><em>travel directly to your ear</em></u>.
Explanation:
The air-to-water sound wave transmission is inhibited because more of reflection than transmission of the wave occurs at the boundary. In the end, only about 30% of the sound wave eventually reaches underwater. For sound generated underwater, all the wave energy is transmitted directly to the observer. Sound wave travel faster in water than in air because, the molecules of water are more densely packed together, and hence can easily transmit their vibration to their neighboring molecules, when compared to air.