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3 years ago

Please help !!!!! I’ll give brainliest !

Physics

1 answer:

pickupchik [31]3 years ago

5 0

Answer:

Honestly for me it's a bit too blurry. Sorry luv.:(

Explanation:

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In a liquid with a density of 1400 kg/m3 , longitudinal waves with a frequency of 370 Hz are found to have a wavelength of 8.40

VARVARA [1.3K]

Answer:

Bulk modulus = 1.35 × $10^{10}$ Pa

Explanation:

given data

density = 1400 kg/m³

frequency = 370 Hz

wavelength = 8.40 m

solution

we get here bulk modulus of the liquid that is

we know Bulk Modulus = $v^2*\rho$ ...............

here $\rho$ is density i.e 1400 kg/m³

and v is = frequency × wavelength

v = 370 × 8.40 = 3108 m/s

so here bulk modulus will be as

Bulk modulus = 3108² × 1400

Bulk modulus = 1.35 × $10^{10}$ Pa

3 0

4 years ago

At 9:00 on Saturday morning, two bicyclists heading in opposite directions pass each other on a bicycle path.The bicyclist headi

notka56 [123]

Between 9:00 am and 10:45 am, there have been 1 hour and 45 minutes or 1.75 hours have passed. Let x be the speed of the slower cyclist and x+ 5 be the rate of the second cyclist. The given situation is best represented through the equation below,
x(1.75) + (x + 5)(1.75) = 47.25 km
The value of x from the equation is 11. Thus, the two bicyclists' rates are 11 km/h and 16 km/h.

3 0

3 years ago

Read 2 more answers

Why do stars twinkle

vlada-n [284]

As light from a star races through our atmosphere, it bounces and bumps through the different layers, bending the light before you see it. Since the hot and cold layers of air keep moving, the bending of the light changes too, which causes the star's appearance to wobble or twinkle.

4 0

3 years ago

In an experiment, 50 g of each material were placed in a calorimeter with the same starting water volume and temperature. Which

eimsori [14]

Answer:it’s different materials have different abilities to transfer energy.

Explanation:

Just took it.

3 0

3 years ago

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A certain string just breaks when it is under400N of tension.

OLEGan [10]

Answer:

The string will break with a speed of 20 m/s.

Explanation:

It is given that,

Tension at which the string just breaks, T = 400 N

Mass of the stone, m = 10 kg

Radius of the circle, r = 10 m

We need to find the speed at which the string will break. The boy continuously increases the speed of the stone. The tension acting on the stone is equal to the centripetal force. It is a force that acts towards the center of circle. It is given by :

$T=F=\dfrac{mv^2}{r}$

$v=\sqrt{\dfrac{Tr}{m}}$

$v=\sqrt{\dfrac{400\ N\times 10\ m}{10\ kg}}$

v = 20 m/s

So, the string will break with a speed of 20 m/s. Hence, this is the required solution.

4 0

3 years ago