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3 years ago

In a transverse wave the particles Name

Physics

1 answer:

7nadin3 [17]3 years ago

3 0

Answer:

The direction a wave propagates is perpendicular to the direction it oscillates for transverse waves. A wave does not move mass in the direction of propagation; it transfers energy.

Explanation:

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A wire has a resistance of 27.2 ohms. It is melted down, and from the same volume of metal a new wire is made that is 3 times lo

solmaris [256]

Answer:

81.6 ohm

Explanation:

For a cable type conductor, the resistance is given by the following formula:

$R=\rho \frac{l}{S}$

Where:

$\rho=Material\hspace{3}resistivity\\l=Cable\hspace{3}length\\S=Cable\hspace{3}cross\hspace{3}section$

The problem doesn't give us additional information about resistivity or the cross section of the wire, so let's assume:

$S=constant\\\rho=constant$

Then, in this case, the resistance of the cable depends only on the length. Therefore, if its resistance was originally 27.2 ohms, if we triple its length, it makes sense that its new resistance is three times the original. Thus:

$R=3*(27.2)=81.6ohm$

5 0

3 years ago

To calculate the heat needed to melt a block of ice at its melting point what do you need to know

Alisiya [41]

You have to know what the temperature of your suroundings first and then you can melt it with the tools you need. yeah that's another thing know what tools you need and then be safe!:D

3 0

3 years ago

A spherical shell rolls without sliding along the floor. The ratio of its rotational kinetic energy (about an axis through its c

True [87]

Answer:

The ratio is $\frac{RE}{TE} = \frac{2}{3}$

Explanation:

Generally the Moment of inertia of a spherical object (shell) is mathematically represented as

$I = \frac{2}{3} * m r^2$

Where m is the mass of the spherical object

and r is the radius

Now the the rotational kinetic energy can be mathematically represented as

$RE = \frac{1}{2}* I * w^2$

Where $w$ is the angular velocity which is mathematically represented as

$w = \frac{v}{r}$

=> $w^2 = [\frac{v}{r}] ^2$

$RE = \frac{1}{2}* [\frac{2}{3} *mr^2] * [\frac{v}{r} ]^2$

$RE = \frac{1}{3} * mv^2$

Generally the transnational kinetic energy of this motion is mathematically represented as

$TE = \frac{1}{2} mv^2$

$\frac{RE}{TE} = \frac{\frac{1}{3} * mv^2}{\frac{1}{2} * m*v^2}$

$\frac{RE}{TE} = \frac{2}{3}$

5 0

3 years ago

Look at the diagram below. The value of equivalent resistor is: A. 4 Ω B. 6 Ω C. 8 Ω D. 10 Ω

Advocard [28]

Answer:

R=4Ω

Explanation:

R1 and R3 are parrallel

so we have : R=R1*R2/R1+R2

R=6*3/6+3

R=18/9

R=2Ω

R2 and 2Ω are in series,so we have

R=R2+2

R=2+2

R=4Ω

5 0

3 years ago

4. Explain the doppler effect. Be sure to talk about how the wave changes, the perceived change hear by a person that an emitted

Lemur [1.5K]

Answer:

4) The Doppler effect is the frequency change that occurs in a wave by the relative movement of the emitter and the observer

5) Sound originates from a repetitive movement of air molecules

6) The principle of stable superposition that if the medium complies with the elastic regime, the waves traveling in it can be added

Explanation:

4) The Doppler effect is the frequency change that occurs in a wave by the relative movement of the emitter and the observer. In the specific case of the fixed observer, each wave that is emitted travels at a constant speed, but as the emitter approaches the next wave lLa in less time, so the wave maxima are closer to each other

v = λ’ f’

λ‘=λ -Δλ = λ - vs / f

f’= v / λ’ = v / (λ - vs / f) = v / (v / f - vs / f)

f ‘= f v / (v-vs)

5) Sound originates from a repetitive movement of air molecules, this movement creates a longitudinal wave, which we call sound. It is characterized by the air volume module and its density

6) The principle of stable superposition that if the medium complies with the elastic regime, the waves traveling in it can be added

y total = y₁ + y₂

Let's see as an example two waves of the same amplitude that travel in the same direction, if this wave the maximums coincide they add up obtaining that the maximums are twice the amplitude

If the wave goes in the most directive but the maximum of one coincides with the minimum in the other, the sum gives zero,

The wave travels in the opposite direction, in this case the resulting wave in constant in time and we call it resonance

7 0

3 years ago