What element has 7 neutrons, 7 protons and 7 electrons??

Answers

Answer 1

Answer:

A nitrogen atom contains 7 protons, 7 electrons and 7 neutrons.

What are Electrons, protons and Neutrons?

Electrons are defined as subatomic particles with a negative elementary electric charge that belong to the first generation of the lepton particle family, and are considered elementary particles because they have no known constituents or substructures.

A proton is defined as a stable subatomic particle, symbol p, H⁺, or ¹H⁺, having a positive electric charge of +1 e elementary charge, with a mass slightly less than that of a neutron and the mass of an electron is 1,836 times.

A neutron is defined as a subatomic particle found in the nucleus of every atom except simple hydrogen, where the particle derives its name from the fact that it has no electric charge as it is neutral. Neutrons are very dense. Atoms contains same number of protons, electrons and neutrons like in nitrogen.

Thus, a nitrogen atom contains 7 protons, 7 electrons and 7 neutrons.

Learn more about Electrons, here:

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Answer 2

Answer: The answer is nitrogen.

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What are three methods of heat transfer and what are some examples

Answers

Answer: I am studying heat transfer and have learned there are three kinds of heat transfer: conduction, convection, and radiation. Some examples are:

Conduction:

Touching a stove and being burned

Ice cooling down your hand

Boiling water by thrusting a red-hot piece of iron into it

Convection:

Hot air rising, cooling, and falling (convection currents)

An old-fashioned radiator (creates a convection cell in a room by emitting warm air at the top and drawing in cool air at the bottom).

Radiation:

Heat from the sun warming your face

Heat from a lightbulb

Heat from a fire

Heat from anything else which is warmer than its surroundings.

Explanation: A good example would be heating a tin can of water using a Bunsen burner. Initially the flame produces radiation which heats the tin can. The tin can then transfers heat to the water through conduction. The hot water then rises to the top, in the convection process.

The atmosphere would be another example. The atmosphere is heated by radiation from the Sun, the atmosphere exhibits convection as hot air near the equator rises producing winds, and finally there is conduction between air molecules, and small amounts of air-land conduction.

A force that causes an object to change its motion is called a(n) _______a. unbalanced force
b. resistant force
c. compound force
d. unnatural force

Answers

Unbalanced force causes an object to change its motion.

Answer: Option A

Explanation:

A force can be explained as push or a pull that has the tendency to change the velocity of a mass.

The force that makes any change in the movement of an object or body is known to be an unbalanced force. These forces are not equal and opposite. When an object is placed in a rest position and when unbalanced force acts on it, this will not make the object to move.

Example: Force applied against the ball.

The forces whose size is equal and opposite in their direction are known as balanced force. These forces will not make any change in motion of a body. When an object is placed in a rest position and when balance force acts on it, this will not make the object to move.

Example: Pushing against a wall.

Answer:

I believe it is A. Unbalanced.

Explanation:

Hope i helped you!

Sachi wants to throw a water balloon to knock over a target and win a prize. The target will only fall over if it is hit with a force of 0.035 N. The water balloon has a mass of 11.4 grams. How fast will Sachi have to make the water balloon accelerate to hit the target with enough force and win the prize?Round the answer to the nearest one tenth m/s2.
The water balloon must accelerate m/s2.

Answers

Answer:

3.1 m/s²

Explanation:

Given:

Mass of the balloon (m) = 11.4 g = 0.0114 kg ( 1 kg = 1000 g)

Force acting on the balloon (F) = 0.035 N

Acceleration with which the balloon must be hit (a) = ?

Now, we know that, from Newton's second law, net force acting on an object is equal to the product of its mass and acceleration.

Therefore, framing in equation form, we have:

$F=ma$

Rewriting in terms of acceleration 'a', we get:

$a=(F)/(m)$

Now, substitute the given values and solve for 'a'. This gives,

$a=(0.035\ N)/(0.0114\ kg)\n\na=3.07\approx 3.1\ m/s^2(Nearest\ tenth)$

Therefore, the acceleration of the water balloon to reach the target must be equal to 3.1 m/s².

Answer:

3.1

Explanation:

e2020

The intensity or brightness of light depends on

Answers

the square of the amplitude

Which is the force that slows a book sliding ona table

Answers

friction is the force. Friction is also what makes the heat when you rub your hands together really fast for a while, and without it, if you started running in an open field and then tried to stop, you would just keep going on forever until you collided with something

The force that slowed the book from sliding on a table is friction, friction is a type of force that causes things to slow down. In this the book slowed down because of friction.

You do 25 J of work to move a 4N object 5 meters. Find your efficiency and write down the formula.

Answers

4*5=20; ration of 20:25,
20/25= %80

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