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3 years ago

What will the speed of a sound wave change if the Temperature of the medium rises

1 answer:

5 0

The speed of sound will increase because the rate at which the air particles move will increase. As rarefaction and compressions are formed at a faster rate, the frequency increases, thereby increasing the speed.

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If someone has a special rank in brainly how do you feel

Aliun [14]

Answer:

Explanation:tbh I wouldn’t care

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3 years ago

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What source of renewable energy makes up the vast majority of current global renewable energy resource use, and why is this?

umka2103 [35]

Answer:

hydropower

Explanation:

hydroelectric power is a domestic source of energy. This automatically allows each state to produce their own energy without being reliant on international fuel sources. It also won't pollute the air like power plants that burn fossil fuels, such as coal or natural gas. This is because it is powered by water.

I hope this helped. sorry it took so long. I was trying to get the right resources 4 you

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3 years ago

When a force of 2.4 newtons is applied to a spring, the extension is 0.4 m. What is the spring constant?

Neko [114]

Answer:

6N/m

Explanation:

k = Fe

f = 2.4

e = 0.4

2.4 ÷ 0.4

= 6N/m

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3 years ago

The drawing shows an equilateral triangle, each side of which has a length of 2.00 cm. Point charges are fixed to each corner, a

Kipish [7]

Answer:

$-2.60097\times 10^{-6}\ C$

Explanation:

k = Coulomb constant = $8.99\times 10^{9}\ Nm^2/C^2$

r = Distance between charges = 2 cm

The electric force is given by

$F=\dfrac{k4\times 10^{-6}q_A}{r^2}$

Also

$F=\dfrac{k4\times 10^{-6}q_B}{r^2}$

The sum of the force is given by

$\sum F=\dfrac{k4\times 10^{-6}q_A}{r^2}cos 30+\dfrac{k4\times 10^{-6}q_B}{r^2}cos 30\\\Rightarrow \sum F=2\dfrac{k4\times 10^{-6}q_A}{r^2}cos 30\\\Rightarrow q_a=\dfrac{\sum Fr^2}{2\times k4\times 10^{-6}cos30}\\\Rightarrow q_a=\dfrac{405\times 0.02^2}{2\times 8.99\times 10^9\times 4\times 10^{-6}cos30}\\\Rightarrow q_a=2.60097\times 10^{-6}\ C$

Thus $q_a=q_b=-2.60097\times 10^{-6}\ C$ .

The negative sign is because the force points downward which is taken as negative

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4 years ago

A safe weight loss plan recommends a weight loss of no more than __________ pounds per week

DiKsa [7]

I think the answer would be 2 lbs ;)

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3 years ago

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