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storchak [24]
3 years ago
10

The speed of a sound wave in seawater is approximately 1500m/s. If the wave is transmitted at 10ms-1, what is its wavelength? An

swer in cm
Physics
1 answer:
serg [7]3 years ago
7 0
The wave travels at the speed of sound in water: v=1500 m/s.

The frequency of the wave is 
10 ms^{-1} = 10000 s^{-1} = 10000 Hz

so we can find its wavelength \lambda by using the basic relationship between frequency, wavelength and speed of the wave:
\lambda= \frac{v}{f}= \frac{1500 m/s}{10000 Hz}=0.150 m = 15 cm
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Descibe the real-world examples of Newton's third lawthat were idenified in "Applications of Newton's Laws."
ehidna [41]

Answer:

A horse pulls a cart, a person walks on the ground

Explanation:

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2 years ago
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A magnet can attract or repel another magnet from a distance true or false?
Anuta_ua [19.1K]
False the strength off the magnet lessens the farther you get from it
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A bowler who always left the same three pins standing could be considered a(n) ____ bowler.
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A bowler who always left the same 3 pins standing could be considered a C. Precise bowler as from bowling countless number of times he has observed the same amount of pins knocked down each time.
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3 years ago
Three kids are riding on a snow sled traveling horizontally without friction at 19.8 m/s. The masses of Kid A, B, and C are 42.8
Kamila [148]

Answer:

34.6 m/s

Explanation:

From conservation of momentum, the sum of initial and final momentum are equal. Momentum is a product of mass and velocity. Initial mass will be 42.8+31.5+25.9=100.2 kg

Final mass will be 31.5+25.9=57.4 kg

From formula of momentum

M1v1=m2v2

Making v2 the subject of the formula then

V2=\frac {M1v1}{m2}

Substitute 100.2 kg for M1, 19.8 m/s fkr v1 and 57.4 kg for m2 then

V2=\frac {100.2 kg\times 19.8 m/s}{57.4 kg}=34.56376 m/s\approx 34.6 m/s

4 0
3 years ago
Dont skip and pls help ASAP bc if you do i will give 10 pts + brainliest but pls hurry
Fed [463]

ANSWER

Mass: The resistance of an object to acceleration, size-dependent

Volume: The amount of space an object occupies

Boiling point: The temperature at which a liquid boils and turns to vapor.

Melting point: The temperature at which a solid melts and turns to liquid

Density: Size-independent

Solubility: The ability of a substance (solvent) to dissolve when placed in a liquid (solute)

Magnetism: Size-dependent

EXPLANATION:

Mass: the more mass something has, the harder it is to accelerate. This is somewhat intuitive, but is also demonstrated in newton's third law. It's size-dependent because for an object of a given density, the size (volume) will change the mass.

Volume: big objects take up more space. If you put an apple in bucket filled to the brim with water, a little water will splash out, because the apple is now occupying the space that the water used to, but if you put in a watermelon, a lot of water will splash out, because the watermelon is taking up even more space.

Boiling point: when a liquid gets too hot, it will change to gas (example: water to steam)

Melting point: when a liquid gets too cold, it will change to a solid (example: water to ice)

Density: how much mass there is in a given volume. A sphere made of lead will have more mass than a sphere made of wood, even if they are the same size. Size-independent because a big lead sphere has the same density as a small lead sphere, they just have different masses.

Solubility: some substances dissolve in certain solvents, other's don't.

Magnetism: size-dependent because a bigger magnet is stronger than a smaller one if they are identical in every other way. More space means more domains means a stronger magnet.

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