Physics, 28.08.2019 23:30 Izzyfizzy

Asound wave is made of a series of compressions and
a.
extensions.
c.
rarefactions.
b.
volumes.
d.
refractions.

Answers: 2

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Answer from: tramqpham25

Answer;

C. Rarefactions.

Explanation;A wave is a transmission of a disturbance from one point to another. Wave involves transmission of energy from one point to another through a materials medium.Waves may require or may nor require a material medium for transmission. Those wave that do not require material medium for transmission are electromagnetic waves while those that require material medium are called mechanical waves.Mechanical waves transfers energy through the vibration of particles of the medium through which the wave travels, while electromagnetic waves transfer energy through the vibration of electric or magnetic fields.Sound waves are examples of mechanical waves whose motion is that of a longitudinal waves. Such that there is a series of compressions and rarefactions

Answer from: sports1997

Sound waves consist of compressions and rarefactions.

Answer from: Quest

given data:

determine the horse power (h.p) = ?

force applied to move the box(f) = 10 pounds,

box lifted from a distance (d) = 3 feet

time taken to lift (t) = 10 sec,

the horse power is defined as amount of work required to move a load. the horse power is equal to 550 foot-pound per second

1 h.p = 550 foot-pound/second

it can also be defined as the the load that need to be move a body for certain distance in a certain amount of time.

mathematically,

h.p = (force × distance)/ time

= (10 × 3)/ 10

= 30/10

= 3 foot -pound/sec

hence, the horse power is needed to move the box is 3 foot-pound/second

important note: 1 h.p = 550 foot-pound/second = 746 watts

Answer from: Quest

the diagram which shows forces as either balanced = same speed or unbalanced = accelerarting

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Asound wave is made of a series of compressions and
a.
extensions.
c.
rarefa...

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