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joja [24]
3 years ago
9

Social media presents some dangers that you should be aware of

Physics
2 answers:
wariber [46]3 years ago
6 0

Answer:

true ...........................

Triss [41]3 years ago
5 0
Definitely true social media can be a very dangerous thing
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What does it mean when there is a curved line going upwards on a graph?<br><br>science 8th grade :)
yulyashka [42]

Answer: it is the asymptote

Explanation: a line that continually approaches a given curve but does not meet it at any finite distance.

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3 years ago
A 150 cm long string vibrates with 3 loops and its frequency is 80 Hz. What will be the wavelength and velocity of the waves?
Vlad1618 [11]

Answer:

since each loop is ewuvivalent to one half wave lenght . the length of the string is equal to two halves of a wavelength . put in the form of an equation in the same reasoning also

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3 years ago
How is kinetic energy related to the distance
astra-53 [7]

Kinetic energy =

1/2 (mass) • (velocity squared).

I don't see distance in that formula anywhere, so they're not related.

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3 years ago
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A train car has a mass of 10,000 kg and is moving at +3.0 m/s. It strikes an identical train car that is at rest. The train cars
shtirl [24]
In order to compute the final velocity of the trains, we may apply the principle of conservation of momentum which is:
initial momentum = final momentum
m₁v₁ = m₂v₂

The final mass of the trains will be:
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Substituting the values into the equation:

10,000 * 3 = 20,000 * v
v = 1.5 m/s

The final velocity of the trains will be 1.5 m/s
3 0
3 years ago
A sound wave has a speed of 343 m/s in air. What is the wavelength of a sound wave with a frequency of 686 Hz
Svetradugi [14.3K]

Wavelength is the distance between 2 adjacent points in a wave

we can use the following equation to find the wavelength of a sound wave

wavelength = speed / frequency

frequency is the number of waves passing a point in 1 second

substituting the values in the equation

wavelength = 343 m/s / 686 Hz

wavelength = 0.5 m

wavelength of the wave is 0.5 m

6 0
3 years ago
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