3 years ago

What is the speed of sound dependent on?

Physics

1 answer:

mojhsa [17]3 years ago

5 0

Depends on the elasticity and density of the medium through what it is traveling

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A 1800kg car has a velocity of 30 m/s to the east what is the momentum of the car p=m(v)

Anastasy [175]

Answer:

54000 kg*m/s

Explanation:

1800*30= 54000

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2 years ago

How much energy from the sun actually reaches the corn answer?

Serhud [2]

The energy from the sun that reaches the corn is about two billionths.

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3 years ago

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If the mass of a materials is 44grams and the volume of the material is 11cm^3 what would the density of the material be

jok3333 [9.3K]

Density =mass/volume
density= (0.044kg/(11 x10^-6)
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3 years ago

If Sherry took her pulse for 6 seconds and felt 14 beats, What would her heart rate be?

Tom [10]

Answer:

140 beats per minute

Explanation:

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2 years ago

A mail carrier leaves the post ofﬁce and drives 2.00 km to the north. He then drives in a direction 60.0° south of east for 7.00

den301095 [7]

Answer:

$\theta=7^o$

Explanation:

Displacement

It is a vector that points to the final point where an object traveled from its starting point. If the object traveled to several points, then the individual displacements must be added as vectors.

The mail carrier leaves the post office and drives 2 km due north. The first displacement vector is

$\vec r_1=\ km$

Then the carrier drives 7 km in 60° south of east. The displacement has two components in the x and y axis given by

$\vec r_2=\ km=\ km$

Finally, he drives 9.5 km 35° north of east.

$\vec r_3=\ km=\ km$

The total displacement is

$\vec r_t=\ km+\ km+\ km$

$\vec r_t=\ km$

The direction can be calculated with

$\displaystyle tan\theta=\frac{1.39}{11.28}=0.1232$

$\boxed{\theta=7^o}$

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3 years ago