3 years ago

The part of a vompressional wave that has the lowest density is the

1 answer:

8 0

Longitudinal waves have energy that vibrates parallel to the medium - a compression is the region of greatest density and the rarefaction the region of highest density .The rarefaction (much like the maximum amplitude in a transverse wave) has a region of lowest density, typically situated in the exact center of the region.

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A particle experiences a constant acceleration for 12 second after starting from rest. If it travels a distance s1 in the first

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Answer:

The last option is correct

ΔT1 = 4 sec ΔT2 = 4 sec ΔT3 = 4 sec

S = V0 t + 1/2 a t^2

S1 = 1/2 a t^2 = 8 a where V0 is the speed at the start of the interval

During any interval (of 4 sec) the particle travels 1/2 a t^2 = 8 a due to its acceleration - and you need to include the speed at the start of the interval

S1 = 8a

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The wavelength of a wave is the distance between

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The length of a displaced pendulum body which passes its lowest point twice every second

Troyanec [42]

Answer:

0.248 m

Explanation:

The period of a simple pendulum is given by

$T=2\pi \sqrt{\frac{L}{g}}$

where

L is the length of the pendulum

g is the acceleration of gravity

The pendulum in the problem passes its lowest point twice every second: this means: this means that it makes one complete oscillation in one second, so its period is 1 second:

T = 1 s

And using

$g=9.8 m/s^2$

We can rearrange the equation above to find L, the length of the pendulum:

$L=\frac{T^2 g}{4\pi^2}=\frac{1^2(9.8)}{4\pi^2}=0.248 m$

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