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3 years ago

Classify:Energyis the ability to exert force and cause change. Energy has manyforms:

Physics

1 answer:

Grace [21]3 years ago

6 0

Answer:

Energy: Kinetic, Sound, Thermal, gravitational, electric, light and nuclear

Explanation:

This exercise asks to clarify a little some important concepts

* Energy. It is the capable one that has the bodies to carry out a job.

* Kinetic energy. It is the energy due to the movement of objects

* sound energy. It is the energy due to the vibration of the atoms or molecules of the materials, it can be solid, liquid or gaseous

* Thermal energy. It is the energy due to movement of the particles

* Gravitational Energy. It is a configuration energy due to the height of the bodies with respect to a reference point

* Electric power. It is due to the movement of electric charges

* light energy. It is the energy that light carries due to the electric and magnetic fields that form it, it occurs throughout the electromagnetic spectrum

* Nuclear energy. It is the energy stored in the nucleus by the configuration and movement of protons and neutrons.

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What is the answer . y+-3=6

Gre4nikov [31]

y=9 because you would need to subtract 3 from both sides because its a -3, adding 3 would cancel it out on one side leaving y=9. 9 is the answer:)-May

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3 years ago

Read 2 more answers

Which chemical reaction is most likely the slowest?

NemiM [27]

B. takes the longest!

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3 years ago

Larry , Moe, and Curly are pushing on a 25 kg crate. The crate is sitting on a horizontal floor, and the coefficient of kinetic

monitta

Answer:

2 m/s².

Explanation:

The forces acting on the crate have been shown in the figure below.

Net force acting on the crate in the horizontal direction = 400 - 250 = 150 N towards right.

For the forces of vertical direction we can write,

Normal force = 150 + Mg = 150 + 250 = 400 N (here g = 10 m/s² have been taken)

The magnitude of frictional force that will act on the crate = μ × Normal force

So, Frictional force = 0.25 × 400 = 100 N

Thus, the net force that will cause acceleration in the crate will be

Force in the right direction - frictional force

= 150 - 100 = 50 N

As we know,

Acceleration = $\frac{Force}{Mass}$ = $\frac{50}{25}$ = 2 m/s²

So, the net acceleration in the crate will be 2 m/s².

7 0

4 years ago

1.A wave has a period of 20 seconds. What is the frequency?

Vesnalui [34]

1). Frequency = (1/period) = 1/(20sec) = (1/20) per sec .

2). Frequency= (3 waves) / (4 sec) = (3/4) (per sec)
Period = (1/freq) = 1/(3/4 per sec) = (4/3) sec

3). Speed= (freq) x (wavelength) (2 per sec) x (5 m) = (2 x 5) ( m per sec)
Speed doesn't depend on amplitude.

6 0

3 years ago

The enthalpy of fusion of mercury is 2.292 kJ mol-1 at its normal freezing point of 234.3 K; the change in molar volume on melti

aev [14]

Answer:

T_2= 234.37 K

Explanation:

According to Claperyon, we know that

$P_2-P_1= \frac{\Delta H_{fus}}{\Delta V}\times\frac{T_1}{T_2}$

P_1= Atmospheric pressure 760 mm Hg

P_2 = pressure at the bottom of the column

= 10×10^3 mm of Hg+ 760 mm of Hg

= 10760 mm of Hg

now,

P_2-P_1= 10760-760= 10^4 mm

P_2-P_1 ( in pascals) = 10^4× 133.322= 1333220 mm

the enthalpy of fusion (ΔH-fus) of mercury is 2.292 KJ/mol

use the above equation to calculate ΔT as follows

$1333220= \frac{2292}{0.517\times10^{-6}}\times ln\frac{T_2}{234.3K}$

therefore, T_2= 234.37 K

6 0

3 years ago