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3 years ago

12

You rent an apartment that costs $1800 per month during the first year, but the rent is set to go up 11,5% per year. What would

be the rent of the apartment during the loth year of living in the apartment? Round to the nearest tenth (if necessary).

1 answer:

11111nata11111 [884]3 years ago

4 0

how many years are they living in it for, there isnt all the information, because we wouldnt know when to stop.

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Liquid ethanol is a flammable fluid and can release vapors that form explosive mixtures at temperatures above its flashpoint at

marta [7]

Answer:

The volume flow rate necessary to keep the temperature of the ethanol in the pipe below its flashpoint should be greater than 1.574m^3/s

Explanation:

Q = MCp(T2 - T1)

Q (quantity of heat) = Power (P) × time (t)

Density (D) = Mass (M)/Volume (V)

M = DV

Therefore, Pt = DVCp(T2 - T1)

V/t (volume flow rate) = P/DCp(T2 - T1)

P = 20kW = 20×1000W = 20,000W, D(rho) = 789kg/m^3, Cp = 2.44J/kgK, T2 = 16.6°C = 16.6+273K = 289.6K, T1 = 10°C = 10+273K = 283K

Volume flow rate = 20,000/789×2.44(289.6-283) = 20,000/789×2.44×6.6 = 1.574m^3/s (this is the volume flow rate at the flashpoint temperature)

The volume flow rate necessary to keep the ethanol below its flashpoint temperature should be greater than 1.574m^3/s

6 0

4 years ago

While examining the color of an engine's coolant: Technician A says that because it is orange, the cooling system should be flus

Stells [14]

Answer:

Technician B is correct.

Explanation:

In every vehicles, coolants are very important as it keeps the engine cool and keep it running. The coolant serves the purpose of dissipating away the heat that is generated when the engine runs.

When the engine runs, the coolant passes all over the heating surfaces in the engine thus carrying away the heat along with it. With time the color of the coolant changes to rusty brown color when the coolant serves its purpose . It also washes away all the dirt particles from the engine part along with it. Thus the color changes and it is now can be flushed from the engine sump and fresh coolant can be put in to the engine.

Thus in the context, technician B is correct.

4 0

3 years ago

1) Plastics that soften when heated,harden when cooled, and then can be heated and softened many times

dolphi86 [110]

Answer:

2 yes ot will 2 would be a yes but i dont know how i would put that into a paragraph

4 0

3 years ago

Consider a Carnot heat-engine cycle executed in a closed system using 0.028 kg of steam as the working fluid. It is known that t

Paha777 [63]

Answer:

T=138 °C

Explanation:

Given that

m = 0.028 kg

Net work output W= 60 KJ

T₂=2T₁

As we know that efficiency of Carnot heat engine given as

$\eta=1-\dfrac{T_1}{T_2}$

$\eta=1-\dfrac{T_1}{2T_1}$

η = 0.5

We know that

$\eta=\dfrac{W}{Q_a}$

Qa=heat addition

W= net work output

$\eta=\dfrac{W}{Q_a}$

$0.5=\dfrac{60}{Q_a}$

Qa= 120 KJ

From first law

Qa= W+ Qr

Qr= 120 - 60

Qr= 60 KJ

Qr Is the heat rejection.

Heat rejection per unit mass

Qr=60 / 0.028 = 2142.85 KJ/kg

Qr= 2142.85 KJ/kg

Temperature at which latent heat of steam is 2142.85 KJ/kg will be our answer.

T=138 °C

The temperature corresponding to 2142.85 KJ/kg will be 138 °C.

T=138 °C

8 0

3 years ago

The lid on a pressure vessel is held down with 10 bolts that pass through the lid and a flange on the pressure vessel (similar t

Volgvan

Answer:

25120 N

Explanation:

The external load acting on each bolted joint

= P x A / N

= (8 x 10⁶) (31.4 x 10³ x 10⁻⁶) / 10

= 25120 N

4 0

4 years ago