An ocean wave has a wavelength of 2 meters and a period of 5 seconds. What is the speed of the wave?

Answers

Answer 1

Answer: the answer is 2 meters per second!

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In a compressional wave the denser the medium is at the compressions the smaller is amplitude?

Answers

Wellll, let me think about that ...

I don't think I'd agree that you can characterize the amplitude of
a wave according to the density at only one point in it. After all ...
a tiny wave in steel would be much denser at a compression than
a huge wave in air would be.

The amplitude of any wave is described as the difference between
a peak and the resting value. Or even better ... half of the difference
between a maximum and a minimum.

So if you're looking at a longitudinal wave, like sound, I'd say if you
want to describe its amplitude, then you have to look at the density
at two points ... either the difference between the compression and
the resting densities, or the difference between the greatest compression
and the greatest rarefaction.

That's my opinion. I could be wrong.

Examples of the skills used in science include ____ and ____. a. data, diagrams b. clues, detectives c. facts, inferences d. observations, measurements

Answers

Examples of the skills used in science include measurements and observations. I am pretty sure that the last option is the most suitable one, because it represents main tools that scientists use during the research whereas the rest of represented tools are used in criminal and math issues.

Which best describes the motion of air particles when a sound wave passes through them? A. The particles move together and apart perpendicular to the direction of the wave. B. Air particles move parallel to the sound waves C. The particles move perpendicular to the direction of the wave. D. The particles move both perpendicular and parallel to the direction of the wave.

Answers

Before solving this question first we have to understand longitudinal wave and transverse wave.

A longitudinal wave is a wave in which the particles of the medium vibrate parallel to the direction of propagation of wave. In this type of wave one will notice compressions and rarefactions. Compressions are high pressure zones where the particles of the medium are close to each other . The rarefactions are low pressure zones where there will be large separation between particles.

A longitudinal wave is a repeated motion of compressions and rarefactions. The particle of the medium show a little displacement along the direction of wave.

A transverse wave is a wave in which the particle vibration is perpendicular to the direction of propagation of wave .In this type of wave one will notice crests and troughs.It is a repeated motion of crests and troughs.

Sound wave is a longitudinal wave. When it passes through air it forms rarefactions and compressions.

Hence from the above we get that out of the four options given in the question only option B is right which depicts that the air particles move parallel to the sound waves.

Sound waves are like waves in the ocean. when there is an earthquake under the water, the waves are created but, they do not move the water. This is because the water is acting as a medium for the energy produced by that earthquake. Because the energy stored in the sound wave needs particles to bounce off of the answer is D.

In a skateboard race, the winner covered 26 meters in 3.88 seconds . What was his speed?

Answers

26meter/3.88seconds=6.70m/s

I WILLL MARK YOUUUUUUU HELPPPPAcceleration due to gravity on the moon is 1.6 m/s2. If a person has a mass of 65 kg on Earth, what is their weight on the moon?

Answers

Answer:

weight of the moon = mass × gravity

= 65kg × 1•6

=104N/kg

Answer:

10.75 kg

Explanation:

moon = (weight on earth/9.81m/s^2)*1.622m/s^2

An 89 kg person climbs up a uniform 13 kg ladder. The ladder is 5.9 m long; its lower end rests on a rough horizontal floor (static friction coefficient 0.26) while its upper end rests against a frictionless vertical wall. The angle between the ladder and the horizontal is 52◦. Let d denote the climbing person's distance from the bottom of the ladder (see the above diagram). When the person climbs too far (d > dmax), the ladder slips and falls down (kaboom!). Calculate the maximal distance dmax the person will reach before the ladder slips. The acceleration of gravity is 9.8 m/s2.

Answers

Answer:

The maximum distance the person will reach before he slip is 1.82m.

Not even close to the middle of the ladder.

Explanation:

Check attachment for solution

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