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Amiraneli [1.4K]
3 years ago
12

The irreversible thermite reaction (Fe2O3 + 2 Al --> 2 Fe + Al2O3) is highly exothermic, changing the temperature by over 100

0 of degrees. If this reaction were to occur in a bucket of liquid water, what would happen to the water? Think about changes to state of matter.
Physics
1 answer:
likoan [24]3 years ago
6 0

Answer:

the water will boil and change into a gas

Explanation:

This is because it is exothermic and releases the energy into the surroundings and the fact that water boils at 100 degrees Celsius

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The plates of a spherical capacitor have radii 6.25 cm and 15.0 crn. The space between the two spheres is filled with a material
aleksklad [387]

Answer:

Capacitance is 0.572×10⁻¹⁰ Farad

Explanation:

Radius = R₁ = 6.25 cm = 6.25×10⁻² m

Radius = R₂ = 15 cm = 15×10⁻² m

Dielectric constant = k = 4.8

Electric constant = ε₀ = 8.854×10⁻¹² F/m

ε/ε₀=k

ε=kε₀

Capacitance\ (C)=\frac{4\pi k\epsilon_0 R_1\times R_2}{R_2-R_1}\\\Rightarrow C=\frac{4\pi 4.8\times 8.854\times 10^{-12}\times 15\times 10^{-2}\times 6.25\times 10^{-2}}{15\times 10^{-2}-6.25\times 10^{-2}}\\\Rightarrow C=0.572\times 10^{-10}\ Farad

∴ Capacitance is 0.572×10⁻¹⁰ Farad

3 0
3 years ago
Small rockets are used to make small adjustments in the speed of satellites. One such rocket has a thrust of 42 N. If it is fire
Over [174]

To solve this problem we will apply the concepts related to Newton's second law that relates force as the product between acceleration and mass. From there, we will get the acceleration. Finally, through the cinematic equations of motion we will find the time required by the object.

If the Force (F) is 42N on an object of mass (m) of 83000kg we have that the acceleration would be by Newton's second law.

F = ma \rightarrow a = \frac{F}{m}

Replacing,

a =\frac{42N}{83000kg}

a =5.06*10^{-4}m/s^2

The total speed change

\Delta v = v_f -v_0 \rightarrow v_f =\text{Final velocity and } v_0 = \text{Initial velocity } we have that the value is 0.71m/s

If we know that acceleration is the change of speed in a fraction of time,

a= \frac{\Delta v}{t} \rightarrow t = \frac{\Delta v}{a}

We have that,

t= \frac{0.71m/s}{5.06*10^{-4}m/s^2 }

t = 1403.16s

Therefore the Rocket should be fired around to 1403.16s

7 0
2 years ago
A kind of foliated metamorphic rock a. coal b. limestone c. marble d. slate
djyliett [7]
Limestone is a kind of Foliated Metamorphic rock.  
4 0
3 years ago
Read 2 more answers
If the baseball and the plastic ball were moving at the same speed which ball would hit a bat harder
Natali [406]
The baseball because it has a greater mass and would go farther because it don't have holes for the air to go through and slow it down
6 0
3 years ago
In 1780, Galvani, studying animal electricity, connected a long wire to a dissected frog via a nerve. He put another wire from t
lubasha [3.4K]

Answer:

The responses to the question can be defined as follows:

Explanation:

The power of animals is produced through tissues in the body of frogs. Cells in all biological animals perform the same functions as electrochemical cells. There nerve transmission electrical and chemical signals through muscles that respond to this signal. The whole signal could be externally reproduced while using the power which gives its nerve impetus.

6 0
2 years ago
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