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larisa86 [58]
3 years ago
8

Melissa heated a few blue crystals in a test tube. After a few minutes, she observed that the crystals had turned white and a fi

lm of water had formed on the inside of the test tube. Before Melissa conducted this experiment, she most likely developed a theory.developed a hypothesis.developed a bias.developed a scientific law.
Physics
1 answer:
seraphim [82]3 years ago
4 0
I think it will be developed theory
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A tugboat pulls a ship with a constant net horizontal force of 4.71 × 103 N and causes the ship to move through a harbor. How mu
Studentka2010 [4]

Answer:

21.53 x 10^{6} N

Explanation:

force (F) = 4.71 x 10^{3} N

distance (s) = 4.57 km = 4570 m

how much work is done.

work = force x distance

work = 4.71 x 10^{3} x 4570 = 21.53 x 10^{6} N

8 0
3 years ago
What would happen if you held the South Pole of one magnet near the North Pole of another magnet of the same size?
KiRa [710]

The correct choice would be

(B) The magnets would be attracted to each other.

we know that like poles repel each other and unlike poles attract each other. hence when south pole of one magnet is placed near the north pole of other magnet, the two magnets attract each other due to interaction of magnetic fields of the two magnets. the magnetic field lines originating from north pole of one magnet ends at the south of other magnet

4 0
4 years ago
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An air track car with a mass of 6 kg and velocity of 4 m/s to the right collides with a 3 kg car moving to the left with a veloc
sammy [17]

Remember that moment before collision is equal to the moment after collision.

(m1 \times u1) + (m2 \times u2) = (m1 \times v1) + (m2  \times u2)

Plugging in our values,

(6 \times 4) - (3 \times 2) = (6 \times 1) + (3 \times v2) \\ 24 - 6 = 6 \times 3v2 \\ 18 = 18v2 \\ v2 = 1 {ms}^{ - 1}

8 0
2 years ago
What are the standard units of measurement for scientific experiments
Ivanshal [37]
In science, the metric units are most often the units used for experiments. These units are not often used in America otherwise.
4 0
3 years ago
Read 2 more answers
I NEED HELP :) ty.............
Black_prince [1.1K]

Answer:

The answer to your question is given below

Explanation:

From the question given above, we can see that the wave with a higher frequency has a shorter wavelength while that with a lower frequency has a longer wavelength. This is so because the frequency and wavelength of a wave has inverse relationship. This can further be explained by using the following formula:

Velocity = wavelength x frequency

Divide both side by wavelength

Frequency = Velocity /wavelength

Keeping the velocity constant, we have:

Frequency ∝ 1 / wavelength

From the above illustration, we can see clearly that the frequency and wavelength are in inverse relationship. This implies that the higher the frequency, the shorter the wavelength and the shorter the frequency, the higher the wavelength.

7 0
2 years ago
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