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4 years ago

Sort the processes based on the type of energy transfer they involve.??

Physics

2 answers:

Natasha_Volkova [10]4 years ago

5 0

Explanation:

Thermal energy is defined as the kinetic energy present within the particles of a substance.

A process in which energy is absorbed by the molecules of a substance is known as endothermic process. On the other hand, a process in which energy is released by the molecules of a substance is known as exothermic process.

Condensation : A process in which vapors change into liquid as bonds are formed and energy is released.

Freezing : A process in which liquid changes into solid as bonds are formed and energy is released.

Deposition : A process in which particles of a substance come closer to each other resulting in bond formation and release of energy.

Sublimation : A process in which solid state directly changes into gaseous state without undergoing liquid state is known as sublimation. In this process, bonds break and energy is absorbed by the solid particles.

Evaporation : A process in which liquid changes into gas as energy is absorbed leading to breakage bond.

Melting : A process in which solid changes into liquid as energy is absorbed leading to breakage bond.

Thus, we can conclude that given processes are sorted as follows.

Thermal energy added : Sublimation, evaporation, and melting.

Thermal energy released : condensation, freezing and deposition.

klemol [59]4 years ago

3 0

The 1st one goes two added sodoes the second one then the third goes to removed then the fourth goes to added and the rest go to removed

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the cells in your body get energy from the foods you eat. however, your cells must use energy to get this energy. why?

sergiy2304 [10]

Because energy is required for several things in the whole digestive system, including secreting enzymes for chemical digestion of food, and also controlling the peristalsis of oesophagus, means the movement, and the physical digestion of food such as chewing or the churning in stomach

4 0

3 years ago

Read 2 more answers

Calculate the number of vacancies per cubic meter in iron at 850 °C. The energy for vacancy formation is 1.08 eV/atom. Furthermo

Fed [463]

Answer:

The number of vacancies per cubic meter is 1.18 X 10²⁴ m⁻³

Explanation:

$N_v = N*e[^{-\frac{Q_v}{KT}}] = \frac{N_A*\rho _F_e}{A_F_e}e[^-\frac{Q_v}{KT}}]$

where;

N $_A$ is the number of atoms in iron = 6.022 X 10²³ atoms/mol

ρFe is the density of iron = 7.65 g/cm3

AFe is the atomic weight of iron = 55.85 g/mol

Qv is the energy vacancy formation = 1.08 eV/atom

K is Boltzmann constant = 8.62 X 10⁻⁶ k⁻¹

T is the temperature = 850 °C = 1123 k

Substituting these values in the above equation, gives

$N_v = \frac{6.022 X 10^{23}*7.65}{55.85}e[^-\frac{1.08}{8.62 X10^{-5}*1123}}]\\\\N_v = 8.2486X10^{22}*e^{(-11.1567)}\\\\N_v = 8.2486X10^{22}*1.4279 X 10^{-5}\\\\N_v = 1.18 X 10^{18}cm^{-3} = 1.18 X 10^{24}m^{-3}$

Therefore, the number of vacancies per cubic meter is 1.18 X 10²⁴ m⁻³

3 0

3 years ago

When you urinate, you increase pressure in your bladder to produce the flow. For an elephant, gravity does the work. An elephant

weqwewe [10]

Answer:

a) v = 1.19 m / s , b) P₁ = 0.922 10⁵ Pa

Explanation:

1) Let's use the fluid continuity equation

Q = A v

The area of a circle is

A = π r2 = π d²/4

v = Q / A = Q 4 / pi d²

v = 0.006 4/π 0.08²

v = 1.19 m / s

2) write Bernoulli's equation, where point 1 is the bladder and point 2 is the urine exit point

P₁ + ½ rho v₁² + rho g y₁ = P₂ + ½ rho v₂² + rho g y₂

The exercise tell us

P₂ = 1.0013 105 Pa

v₁ = 0

y₁ = 1 m

y₂=0

Rho (water) = 1000 kg / m³

P₁ + rho y₁ = P₂ + ½ rho v₂²

P₁ = P₂ + ½ rho v₂² - rho g y₁

P₁ = 1.013 10⁵ + ½ 1000 (1.19)² - 1000 9.8 1

P₁ = 1.013 10⁵ +708.5 - 9800

P₁ = 92208.5Pa

P₁ = 0.922 10⁵ Pa

8 0

3 years ago

How do organisms use communication to survive?

just olya [345]

Answer: Im not entirly sure but I think It's D all the above. I think all but B because I never really heard of that but if you look in our history I think that happen im not sure I would wait untill you know that somone knows for sure.

Explanation:

3 0

2 years ago

A cylinder is fitted with a piston, beneath which is a spring, as in the drawing. The cylinder is open to the air at the top. Fr

maw [93]

Answer:

x = 0.081 m.

Explanation:

a) To find how much does the atmospheric pressure cause the spring to compress we need to use the following equation:

$F = k*x$ (1)

<u>Where</u>:

F: is the force

k: is the spring constant = 3300 N/m

x: is the distance of compression =?

The force can be found as follows:

$F = P*A$

<u>Where</u>:

P: is the atmospheric pressure = 101325 Pa

A: is the area of the piston = πr²

r: is the radius = 0.029 m

$F = 101325 Pa*\pi*(0.029 m)^{2} = 267.7 N$

Now, from equation (1) we can find x:

$x = \frac{F}{k} = \frac{267.7 N}{3300 N/m} = 0.081 m$

Therefore, the atmospheric pressure causes the spring to compress 0.081 m.

I hope it helps you!

6 0

4 years ago