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4 years ago

What's the difference between a wavelength and an an amplitude?

2 answers:

7 0

A wave is propagated by a point or a particle in a medium that vibrates or oscillates between its mean position and a maximum displacement position.

<u>Amplitude is the maximum displacement from the mean position.</u>

Due to the vibration of the particle, neighbouring particles get disturbed and they also oscillate but some small time (phase) behind.

Along the direction of propagation of the wave, the wave travels a wavelength distance in the same time that is taken by a particle to complete one oscillation.
It is the<u> distance between two successive crests (</u>maximum displacement positions - When a snap shot of wave is taken at one point of time.

valkas [14]4 years ago

3 0

Wavelength - the distance from one wave crest or trough to another wave crest or trough. Amplitude - the distance from the median point or "middle" of the wave straight up to a crest (a maximum) or straight down to a trough (or minimum), which is the peak amplitude; or the distance from a trough straight up to a crest, or a crest straight down to a trough, called peak-to-peak amplitude.

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If P = 4.00î + 3.00k, P · Q = 17.0, and P ✕ Q = −6.00ĵ, determine the vector Q.

Butoxors [25]

let the vector Q is given as

$\vec Q = a\hat i + b\hat j + c\hat k$

given that

$P X Q = -6\hat j$

here we know that

$P = 4\hat i + 3 \hatk$

now by above equation

$(4\hat i + 3\hat k) X (a\hat i + b\hat j + c\hat k) = - 6\hat j$

$4b\hat k - 4c\hat j + 3a\hat j - 3b\hat i = - 6\hat j$

so by comparing both sides

b = 0

4c - 3a = 6

also we know that

$a^2 + b^2 + c^2 = 17^2$

$a^2 + 0 + (1.5 + 0.75a)^2 = 289$

by solving above equation

a = 12.85 and c = 11.14

so the vector Q is given as

$Q = 12.85\hat i + 11.14\hat k$

8 0

4 years ago

The pressure gauge on a tank registers the gauge pressure, which is the difference between the interior pressure and exterior pr

Arisa [49]

Answer:

9.67 kg

Explanation:

If the gauge pressure is 43 atm, the absolute pressure is 44 atm

p1 = 44 atm = 4.46 MPa

If the gauge pressure is 29.4 atm, the absolute pressure is 30.4 atm

p2 = 30.4 atm = 3.08 MPa

The ideal gas state equation is

p * V = m * R * T

We can set two eqaution for these two times

p1* V1 = m1 * R * T1

p2* V2 = m2 * R * T2

SInce V1 = V2 and T1 = T2

p1 = m1 * R

p2 = m2 * R

Rearranging

R = p1 / m1

R = p2 / m2

Equating:

p1 / m1 = p2 / m2

m2 = m1 * p2 / p1

m2 = 14 * 3.08 / 4.46 = 9.67 kg

7 0

3 years ago

The figure shows two vectors, u and v. Which law of vector addition should be used to find the resultant of these two vectors?

nalin [4]

Answer:

eugeuegeueyegueeyye8egeueu8e8

Explanation:

jshdhdyuehdbdbhdhddhhdhd

5 0

3 years ago

How do you think electricity was discovered

sasho [114]

Italian physicist Alessandro Volta discovered that particular chemical reactions could produce electricity, and in 1800 he constructed the voltaic pile (an early electric battery) that produced a steady electric current, and so he was the first person to create a steady flow of electrical charge.

8 0

3 years ago

Read 2 more answers

Un pendul cu arc oscileaza cu frecventa de 0,25Hz. Cite oscilatii efectueaza acest pendul timp de 10s?

vodka [1.7K]

Given:

The frequency of the pendulum ( f) = 0.25 Hz.

Total time (t) = 10 s

Concept: Frequency means, the number of oscillation in one second.

Time period is the required time by pendulum to complete one oscillation.

∵ In 1.0 second, number of oscillations = 0.25

∴ In 10.0 second, number of oscillations = (0.25 ×10.0) / 1.0 = 2.5

Hence, the required number of oscillation = 2.5

4 0

3 years ago