3 years ago

Any two ways to reduce sound pollution

Physics

1 answer:

charle [14.2K]3 years ago

8 0

Answer:

use earplugs

stay away from noisy areas

lower the volume

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Starting from one oasis, a camel walks 25 km in a direction 30° south of west and then walks 30 km toward the north to a second

shepuryov [24]

Answer:

distance between both oasis ( 1 and 2) is 27.83 Km

Explanation:

let d is the distance between oasis1 and oasis 2

from figure

OC = 25cos 30

OE = 25sin30

OE = CD

Therefore BC = 30-25sin30

distance between both oasis ( 1 and 2) is calculated by using phytogoras theorem

in $\Delta BCO$

$OB^2 = BC^2 + OC^2$

PUTTING ALL VALUE IN ABOVE EQUATION

$d^2 = 930-25sin30)^2 + (25cos30)^2$

$d^2 = 775$

d = 27.83 Km

distance between both oasis ( 1 and 2) is 27.83 Km

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3 years ago

If you weighed 130 pounds on earth, you would weigh _____pounds on the moon

Aneli [31]

Answer:

152 pounds

Explanation:

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You push a block to the top of an inclined plane. The mechanical advantage of the plane is 5. The inclined plane is 10 meters lo

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Answer: 50 m

Explanation:

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4 years ago

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The most useful unit of measurement for measuring the thickness of a side of a lab beaker would be a(n)

andrew11 [14]

The answer is letter c

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3 years ago

1. What is work done in holding a 15kg suitcase while waiting for a bus for 15 minutes?

Anettt [7]

The man is holding the suitcase at the same height above the surface of earth. So the gravitation potential energy remains the same.

<span>work done is force * displacement = weight * 0 = 0</span>

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3 years ago