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ira [324]
3 years ago
6

I can’t figure it out! Please help I have a test tomorrow

Physics
1 answer:
nignag [31]3 years ago
7 0

it's 20m/s i.e. no. (2)


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A)what are oxidation numbers? b) what useful functions do oxidation numbers serve
9966 [12]
<span>A) indicate the general distribution of electrons among bonded atoms in molecular compounds
B)</span>useful in naming compounds, writing formulas, and balancing chemical equations
<span>may be used to determine the simplest chemical formula </span>
5 0
3 years ago
What do we mean by primitive material? How can we tell if a meteorite is primitive?
zimovet [89]

Answer:

Primitive material was formed in the early stage of the solar system, before planets cooled off enough to differentiate elements of different density. It was not subject to great heat or pressure after it formed.

We can identify primitive meteorites by their composition, primitive meteorites are usually undifferentiated stones, with some metallic grains mixed in. Some primitive meteorites are darker, carbonaceous stones.

4 0
3 years ago
A 2.74 g coin, which has zero potential energy at the surface, is dropped into a 12.2 m well. After the coin comes to a stop in
nata0808 [166]

Answer:

- 0.328J

Explanation:

POTENTIAL ENERGY = mgh

                                   = 0.00274 × 9.81×12.2  here 2.74g = 0.00274kg

                                   = 0.32792868 J

                                   = 0.328J

AS IT IS BELOW THE SURFACE HENCE MUST BE NEGATIVE

hence potential energy = - 0.328J

8 0
3 years ago
What produces the magnetic field of an electromagnet?
andrew11 [14]

An electromagnet is a magnet whose magnetic field is created when electricity is flowing.

<h2>What is an electromagnet?</h2>

A device consisting of an iron or steel core that is magnetized by electric current in a coil that surrounds it.

<h2>What is magnetic field?</h2>

Magnetic force is defined as the space surrounding a magnet in which magnetic force is exerted.

<h2>What is electricity?</h2>

A form of energy created by charged or moving <em>electrons</em> or <em>protons</em>.

<h2>What does it mean when electricity is flowing?</h2>

The movement of energy is called a flow. The flow of electricity through a wire can be thought of as being similar to the flow of water through a pipe. Electricity usually flows in specially protected wires, but it can also move around using many other objects.

<h2>How does a magnetic field and the flow of electricity relate?</h2>

The electromagnetic force produces two related phenomena: electricity and magnetism. They combine to generate electromagnetism. A magnetic field is created by a moving electric charge. Electric charge movement is induced by a magnetic field, resulting in an electric current.

<h2>What produces a magnetic field? </h2>

Electric charges in motion. Charged particles in motion have both an electric field and magnetic field associated with them.

<h2>How does an electromagnet work?</h2>

An electric current flows through a coil of wire. This produces a magnetic field in the wire. The sides of the coil that carry current at 90 degrees to the magnetic field experience a force as they interact with the magnetic field.

4 0
2 years ago
Which of the following is an example of work being done on an object?
dlinn [17]

Answer:

B

Explanation:

Work is defined as force x distance so a man pushing is the force and the couch moving is the distance

6 0
3 years ago
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