3 years ago

Please answer me my question

Physics

1 answer:

Angelina_Jolie [31]3 years ago

5 0

3 - b) weight decreases
4 -a) 50 kg as mass is same everywhere
5 - b) 200 dynes

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What atmospheric conditions can cause sound wave refractions similar to those observed in the ocean?

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It has to do with we're the water is coming from and we're it's at like city or town

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3 years ago

Sue and Jenny kick a soccer ball at exactly the same time. Sue’s foot exerts a force of 75.9 N to the north. Jenny’s foot exerts

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Answer:

Fr^2 = 75.9N+105.8N=181.7

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3 years ago

A roller coaster travels around a vertical 8-m radius loop. Determine the speed at the top of the loop if the normal force exert

strojnjashka [21]

Answer:

$v=10m/sec$

Explanation:

From the question we are told that

Radius of vertical r= 8m

Force exerted by passengers is 1/4 of weight

Generally the net force acting on top of the roller coaster is give to be

$F_N+Fg$

where

$F_N =forceof the normal$

$Fg= force due to gravity$

Generally the net force is given to be $FC(force towards center)$

$F_C =F_N + Fg$

$F_N =F_C -Fg$

$F_N=F_C-F_g$

$F_N=\frac{mv^2}{R} -mg$

Mathematical we can now derive V

$m_g + \frac{8m}{4}= \frac{mv^2}{8}$

$\frac{5mg}{4} =\frac{mv^2}{8}$

$v^2 =\frac{40*10}{4}$

$v=10m/sec$

Therefore the speed of the roller coaster is given ton be $v=10m/sec$

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3 years ago

3. Identify three elements and three compounds. How are they similar? How are they different?

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Answer: A compound is a substance formed when two or more elements are chemically joined. Water, salt, and sugar are examples of compounds. When the elements are joined, the atoms lose their individual properties and have different properties from the elements they are composed of.

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3 years ago

A deer with a mass of 146kg is running head on toward you with a speed of 17 m/s. You are going north. Find the momentum of the

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Momentum = Mass * Velocity = 146 * 17 = 2482 kgm/s

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3 years ago

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Please answer me my question​

Please answer me my question