4 years ago

Which would be the least effective medium for traveling sound waves?

Physics

1 answer:

-BARSIC- [3]4 years ago

5 0

It goes in order of from least effective to most effective
Gas
Liquid
Solid

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The kinetic energy of a ball with the mass of 0.5 kg and a velocity of 10 m/s is what

slamgirl [31]

Answer:

25J

Explanation:

Kinetic energy = 1/2 mv²

Mass = m= 0.5kg

Velocity = v = 10m/s

K. E = 1/2 x 0.5 x 10 x 10

K. E = 0.5 x 5 x 10

K. E = 2.5 x 10

K. E = 25 J

The S. I unit of energy is joules with symbol J

I hope this was helpful, Please mark as brainliest

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4 years ago

WHY light travel in straight line?reason?

Dafna1 [17]

Light travels in a straight line because it doesn't usually interact with its medium. When it does it is called refraction.

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4 years ago

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Calculate the difference in blood pressure between the feet and top of the head for a person who is 1.70 m tall.

cupoosta [38]

Answer:

$P_2 - P_1 = 1.8 * 10^4\ Pa$

Explanation:

Given

$Height (h) = 1.70m$

Required

Determine the difference in the blood pressure from feet to top

This is calculated using Pascal's second law.

The second law is represented as:

$P_2 = P_1 + pgd$

Subtract P1 from both sides

$P_2 - P_1 = pgd$

Where

$p = blood\ density = 1.06 * 10^3kg/m^3$

$g = acceleration\ of\ gravity = 9.8N/kg$

$d =height = 1.70m$

P2 - P1 = Blood Pressure Difference

So, the expression becomes:

$P_2 - P_1 = 1.06 * 10^3 * 9.8 * 1.70$

$P_2 - P_1 = 17659.6Pa$

$P_2 - P_1 = 1.8 * 10^4\ Pa$

Hence, the difference in blood pressure is approximately $1.8 * 10^4\ Pa$

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3 years ago

Which is the most likely location in the home for mold growth? A) bathroom windows B) living room furniture C) computer keyboard

FinnZ [79.3K]

Answer:

Explanation:

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How long will it take to travel 546 km at 110 km/hr (answer in hours)

Andre45 [30]

(60 * 546) / 110 = 297

297 hrs.

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3 years ago