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3 years ago

15

HELP PLEASE!! A musician is playing an instrument some distance away from the crowd. If the air temperature is 15 degrees Celsiu

s what is the speed of sound in this medium?

1 answer:

ycow [4]3 years ago

8 0

Answer:

weesdshrhrjjrjtjthht

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Reggie and Charlotte are baking oatmeal cookies. They dip the baked cookies in melted chocolate. The chocolate cools to form a h

aleksandrvk [35]

The answer is D. When you melt something, it only changes its physical change.

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3 years ago

Read 2 more answers

If the earth were twice the distance from the sun that it is now, the gravitational force exerted on it by the sun would be: a)

devlian [24]

Answer:

a) 1/4 what it is now

Explanation:

As we know that force of gravitation between two planets at some distance "r" from each other is given as

$F_g = \frac{Gm_1m_2}{r^2}$

now since we know that if the distance between Earth and Sun is changed

So the force of gravity will be given as

$\frac{F_g'}{F_g} = \frac{r_1^2}{r_2^2}$

now we know that the distance between sun and earth is changed to twice the initial distance between them

so we have

$r_2 = 2r_1$

so new gravitational force between sun and earth is given as

$F_g' = \frac{r_1^2}{(2r_1)^2}F_g$

$F_g' = \frac{1}{4}F_g$

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3 years ago

A 56-N net force acting on a cart accelerates it at a rate of 0.5 m/s/s. What is the mass of the cart

Anuta_ua [19.1K]

Answer:

F = m × a = 50 kg × 0.8 m/s2 = 40 kg • m/s2, or 40 N

Explanation:

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3 years ago

A spring is 50 cm in length when not compressed. The spring is then compressed by 35 cm by a force of 100N What is the k valu

tankabanditka [31]

Answer:

k=6.666

Explanation:

F=kx

100=k 50-35

100=k*15

k=6.666

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3 years ago

Potential energy is the ability to:

Ymorist [56]

Answer:

potential energy is the ability to do work

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4 years ago