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rosijanka [135]
3 years ago
6

Drag each label to the correct location on the chart.

Physics
2 answers:
Soloha48 [4]3 years ago
7 0
Kinetic energy-flashlight, and guitar
potential-coal,and composed spring
slega [8]3 years ago
3 0

The answers would be:

POTENTIAL ENERGY

--- Energy of compressed spring

--- Energy of coal

KINETIC ENERGY

--- Energy of a guitar string when plucked.

--- Energy from a flashlight when turned on.

If you'd like to know why:

Energy can be divided into two broad categories, which are:

Potential and Kinetic energy. They differ from each other whereas <em>potential energy</em> is what we call <u>STORED </u>energy and <em>kinetic energy</em> is what we call energy <u>IN MOTION.</u>

Energy is then subdivided further into more specific forms of energy.

In your case, under potential energy you have the compressed spring and coal. A compressed spring's energy is stored through tension, which makes energy MECHANICAL energy. The energy in coal on the other hand comes in the form of CHEMICAL energy, where the energy is stored in the atomic bonds.

Under kinetic energy you have guitar string when plucked (the plucked part is the important clue) and the flashlight turned on. The guitar string creates sound when plucked, so the energy form in this case is what we call SOUND energy. The flashlight on the other hand creates light, which produces RADIANT energy.  The energy here is in motion and it is travelling in waves.

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Which of these processes are chemical reactions?
Rudiy27
I’m not very good at this subject but I’d say it’s A Boiling an egg
4 0
4 years ago
A 7.5 nC point charge and a - 2.9 nC point charge are 3.2 cm apart. What is the electric field strength at the midpoint between
Oduvanchick [21]

Answer:

Net electric field, E_{net}=91406.24\ N/C

Explanation:

Given that,

Charge 1, q_1=7.5\ nC=7.5\times 10^{-9}\ C

Charge 2, q_2=-2.9\ nC=-2.9\times 10^{-9}\ C

distance, d = 3.2 cm = 0.032 m

Electric field due to charge 1 is given by :

E_1=\dfrac{kq_1}{r^2}

E_1=\dfrac{9\times 10^9\times 7.5\times 10^{-9}}{(0.032)^2}

E_1=65917.96\ N/C

Electric field due to charge 2 is given by :

E_2=\dfrac{kq_2}{r^2}

E_2=\dfrac{9\times 10^9\times 2.9\times 10^{-9}}{(0.032)^2}

E_2=25488.28\ N/C

The point charges have opposite charge. So, the net electric field is given by the sum of electric field due to both charges as :

E_{net}=E_1+E_2

E_{net}=65917.96+25488.28

E_{net}=91406.24\ N/C

So, the electric field strength at the midpoint between the two charges is 91406.24 N/C. Hence, this is the required solution.

3 0
4 years ago
What happens to the speed of an object when dropped at free fall
dedylja [7]

If it's not falling through air, water, smoke, or anything else,
and gravity is the only force on it, then its speed increases
at a constant rate ... 9.8 meters per second for every second
it falls.  (That's the number on Earth.  It's different in other places.)
3 0
4 years ago
what is change in internal energy if 30j of heat are released from a system that does 50j of work on its surroundings
slamgirl [31]

Answer:

-80 J

Explanation:

The first law of thermodynamics states that:

\Delta U = Q - W

where

\Delta U is the change in internal energy of the system

Q is the heat absorbed by the system

W is the work done by the system

In this problem, we have:

Q = -30 J is the heat released by the system (negative because the system releases it)

W = +50 J is the work done by the system on the surrounding (positive since it is done by the system)

Therefore, the change in internal energy is

\Delta U = -30 J - (+50 J) = -80 J

3 0
4 years ago
Mountains forming today due to movement of the plates and mountains forming in the past due to movements of the plates would be
nataly862011 [7]

Answer: d.

Explanation:

3 0
4 years ago
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