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3 years ago

What do mechanical waves carry?

1 answer:

7 0

A mechanical wave is a wave that is not capable of transmitting its energy through a vacuum. Mechanical waves require a medium in order to transport their energy from one location to another. A sound wave is an example of a mechanical wave.

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If I wanted to generate a maximum emf of 20 V, what angular velocity (radians/sec, aka Hz) would be required given a circular co

MissTica

Answer:

35.36776 Hz

Explanation:

B = Magnetic field = $9\times 10^{-3}}\ T$

$E_m$ = Maximum voltage = 20 V

d = Diameter of coil = 40 cm = 0.4 m

A = Area = $\pi \frac{d}{2}^2=\pi 0.2^2$

N = Number of turns = 500

$\omega$ = Angular velocity

Maximum emf is given by

$E_m=NAB\omega\\\Rightarrow \omega=\frac{E_m}{NAB}\\\Rightarrow \omega=\frac{20}{500\times \pi\times 0.2^2\times 9\times 10^{-3}}\\\Rightarrow \omega=35.36776\ Hz$

The angular velocity would be 35.36776 Hz

8 0

4 years ago

Which best describes what happens to sunlight after passing through the keyhole of a door

Law Incorporation [45]

Given the answers I would say B, Is your best choice because when the light goes through a hole it spreads out, because most light rays (<) outward.

7 0

4 years ago

A 4.0-μF capacitor that is initially uncharged is connected in series with a 4.0-kΩ resistor and an ideal 17.0-V battery. How mu

Komok [63]

Answer:

Indian girls

Explanation:

I don't know what do you expect I don't know this

4 0

3 years ago

How is fabric made from fur different from fabric made of hair?

Dmitry [639]

Answer:

The principal hair fiber used to produce textile fabrics is sheep's wool. In wild sheep, the wool is a short, soft underlayer protected by longer, coarser hair. ... Fur fibers from animals such as mink and beavers are sometimes blended with other hairs to spin luxury yarns but are most often found as fur pelts.

3 0

3 years ago

Plz help

slamgirl [31]

Answer:

Force,friction,inertia and momentum

Explanation:

The speed that the marble is moving at can be determined by the amount of force used when pushed or pulled and what kind of surface it's on.Momentum is also a factor because of the mass of the marbles.

6 0

3 years ago