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3 years ago

Which of the following are true statements about the graph below? (choose 2)

Physics

2 answers:

Alexeev081 [22]3 years ago

6 0

Answer:

The amplitude of the wave is decreasing with time.

Something is damping the wave (the amplitude is decreasing with time)

ElenaW [278]3 years ago

5 0

Explanation:

The amplitde is measdured in the +/- y direction. Certainly you can observe that it is changing.

A damped wave is one whose vertical disdtance keeps going down until it is almost a straight line. Smething is causing that. The phenomenon is called damping.

So the answer is the last two. (c and d)

The frequency is measured on the x axis. If the distance between waves changes, then the frequency changes. Wavelength is also measured on the x axis. If the distance occupied by 2 consecutive waves changes , then the wave length changes.

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4 years ago

Which of these is something whose construction MOST LIKELY would be determined by the government? A) An airport B) A golf club C

vesna_86 [32]

The answer is; A

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3 years ago

Find the distance travelled when the initial angular velocity is 3 rad/s, the final angular velocity is 25 rad/s and the time of

Llana [10]

Answer:

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Explanation:

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3 years ago

Technician A says that the aspect ratio of a tire represents the relationship between the tire's cross-sectional height to its c

earnstyle [38]

Answer:

Technician A

Explanation:

Often referred to as the profile or series, the aspect ratio of a tire is determined by dividing a tire’s section height by its section width when the tire is: inflated to maximum air pressure, mounted on the approved measuring rim, and under no load. This rules out Technician B.

A tire with a lower aspect ratio responds to lateral force more effectively than a tire with a higher aspect ratio. The aspect ratio affects steering stability. Generally, the shorter the sidewall, or the lower the aspect ratio, the less time it takes to transmit the steering input from the wheel to the tread. The result is quicker steering response. Aspect ratio also affects the tread contact patch. As a rule, a low-profile tire produces a wider tread contact patch. This wider tread contact patch creates a stiffer footprint that reduces distortion and provides improved cornering traction. Aspect ratio also impacts ride. A low-profile tire usually has a stiffer ride than the standard aspect ratio of 75 or more.

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4 years ago

A bicycle-cab driver takes two customers across the park. The driver exerts a constant force of 1,400 Newtons as he pedals the c

seraphim [82]

Power is the work performed divided by time in seconds. The work is the force times distance:
$W=Fd=1400*200=280000J$

the time in seconds is 60*11+30=690s so the power is

$P=\frac{280000J }{690s}=405.8W$

So choice B

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3 years ago