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labwork [276]
3 years ago
8

On Monday while Johnny was getting ready for school, he was in the bathroom holding his comb when he got an itch on his head. Jo

hnny used the comb to rub his itch away and when he did his hair was a mess. He turned on the faucet so there was a small stream of water flowing and as he brought the comb near the water to dampen it, he noticed that the water was pulling towards the comb. Thinking he was seeing things, he pulled the comb back and the water was flowing straight down. He again moved the comb near the stream of water and the water again was pulling towards the comb. He repeated this process many times and the water continued to move towards the comb when the comb was near the water.
What do you think is happening to the stream of water flowing from the faucet?
Support you claim in Question 1, by explaining why you think it is happening.
Formulate your hypothesis for the problem.
Physics
2 answers:
kaheart [24]3 years ago
7 0

Answer:

it is to do with the static electricity produced by using the comb

zavuch27 [327]3 years ago
3 0

Answer:

it is to do with the static electricity produced by using the comb

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. Inside a conducting sphere of radius 1.2 m, there is a spherical cavity of radius 0.8 m. At the center of the cavity is a poin
MAVERICK [17]

Answer:

 E = 1,873 10³ N / C

Explanation:

For this exercise we can use Gauss's law

        Ф = E. dA = q_{int} / ε₀

Where q_{int} is the charge inside an artificial surface that surrounds the charged body, in this case with the body it has a spherical shape, the Gaussian surface is a wait with radius r = 1.35 m that is greater than the radius of the sphere.

The field lines of the sphere are parallel to the radii of the Gaussian surface so the scald product is reduced to the algebraic product.

        The surface of a sphere is

             A = 4π r²

             E 4π r² = q_{int} /ε₀

  The net charge within the Gauussian surface is the charge in the sphere of q1 = + 530 10⁻⁹ C and the point charge in the center q2 = -200 10⁻⁹ C, since all the charge can be considered in the center the net charge is

           q_{int} = q₁ + q₂

           q_{int} = (530 - 200) 10⁻⁹

           q_{int} = 330 10⁻⁹ C

The electric field is

             E = 1 / 4πε₀   q_{int} / r²

            k = 1 / 4πε₀

            E = k q_{int}/ r²

Let's calculate

           E = 8.99 10⁹   330 10⁻⁹/ 1.32²

           E = 1,873 10³ N / C

7 0
3 years ago
A 1200 kg car traveling east at 4.5 m/s crashes into the side of a 2100 kg truck that is not moving. During the collision, the v
Rasek [7]

Answer:

Explanation:

This is a simple Law of Momentum Conservation problem of the inelastic type. The equation for this is

[m_1v_1+m_2v_2]_b=[(m_1+m_2)v]_a  Filling in:

[1200(4.5)+2100(0)]=[(1200+2100)v] which simplifies to

5400 + 0 = 3300v

so v = 1.6 m/s to the east, choice B

6 0
2 years ago
if you poured oil and water into a beaker , which liquid would be on top and which would be on the bottom ? How would the densit
Effectus [21]

Answer:

 oil floats in water due to the fact that it is less dense. since the water is more dense, it is basically heavier, and heavier items always sink, while lighter items float, the same can be said about liquids. denser liquids will sink while less dense items will float.

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2 years ago
HELP ME PLEASE ASAP!!!!! WILL GIVE BRAINLIEST, FIVE STARS, AND HEART!!!!!<br>(picture included)
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Answer:

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2 years ago
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Vadim26 [7]
An electron shell can hold 2(n^2) electrons (technically) where n is the shell number, i.e. shell 1 can hold 2, shell 2 can hold 8, 3 holds 18 and so on.
The atomic number of Nitrogen is 7, i.e. it has 7 electrons (to match its 7 protons, assuming it isn't an ion).

With the atomic number, you simply start from shell 1 and work out. So we put 2 electrons in shell 1, leaving us with 5 left. Shell 2 can hold 6 so we can fit all 5 in.

In other words, you should have 2 electron shells on the atom, shell 1 with 2 e- and shell 2 with 5 e-.
3 0
2 years ago
Read 2 more answers
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