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Cloud [144]
3 years ago
14

Which statement describes a property of a proton?

Physics
1 answer:
lesantik [10]3 years ago
7 0

Answer:

They have no charge and are present in the nucleus of an atom. They have a negative charge and travel around the nucleus of an atom. They have a positive charge and travel around the nucleus of an atom

Explanation:

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Membrane walls of living cells have surprisingly large electric fields across them due to separation of ions. (Membranes are dis
Arturiano [62]

Answer:

Voltage, V = 0.0524 volts

Explanation:

Thickness of the membrane, d=7.95\ nm=7.95\times 10^{-9}\ m

Electric field strength, E=6.6\ MV/m=6.6\times 10^6\ V/m

We need to find the voltage across it. The relationship between the voltage, electric field and the distance is given by :

V=E\times d

V=6.6\times 10^6\ V/m\times 7.95\times 10^{-9}

V = 0.0524 volts

So, the voltage across the thick membrane is 0.0524 volts. Hence, this is the required solution.

7 0
3 years ago
What is meant by a colored shadow? If "shadow" means
Natasha_Volkova [10]

Explanation:

Red, green, and blue are therefore called additive primaries of light. ... When you block two lights, you see a shadow of the third color—for example, block the red and green lights and you get a blue shadow. If you block only one of the lights, you get a shadow whose color is a mixture of the other two.

First, your definition of a shadow is incorrect. A shadow is an area that receives less light than its surroundings because a specific source of light is blocked by whatever is "casting" the shadow. Your example of being outside reveals this. The sky and everything around you in the environment (unless you are surrounded by pitch black buildings) is sending more than enough light into your shadow, to reveal the pen to your eyes. The sky itself diffuses the sunlight everywhere, and the clouds reflect plenty of light when they are not directly in front of the Sun.

If you are indoors and have two light bulbs, you can throw two shadows at the same time, possibly of different darknesses, depending on the brightness of the light bulbs.

It can take a lot of work to get a room pitch black. One little hole or crack in some heavy window curtains can be enough to illuminate the room. There are very few perfectly dark shadows.

4 0
3 years ago
A chart showing the type of reproduction that occurs in several organisms is shown below. Organism Type of Reproduction Bacteria
quester [9]

Answer:

C

Explanation:

7 0
3 years ago
Read 2 more answers
How do convection cells in Earth's atmosphere cause high and low pressure belts?
seropon [69]
Areas of rising air causes low air pressure areas and <span>Areas of sinking air are areas of high air </span>pressure
6 0
4 years ago
A cyclist acceleration from 0m/s to 8m/s in 3second. what is his acceleration?​
umka2103 [35]

Answer:

2.66 m/s² .

Explanation:

Initial velocity , u = 0 m/s

Final Velocity , v = 8 m/s

Time Taken , t = 3 s

So , Acceleration = (v-u)/t = (8 m/s - 0 m/s) /3 sec . = 8/3 m/s² = 2.66 m/s²

4 0
3 years ago
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