2 years ago

Who want to play "1v1 lol unblocked games 76 " with me

Engineering

2 answers:

ch4aika [34]2 years ago

6 0

Answer:

Explanation:

Fynjy0 [20]2 years ago

6 0

Answer: I will

Explanation:

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The hot water needs of an office are met by heating tab water by a heat pump from 16 C to 50 C at an average rate of 0.2 kg/min.

Alex777 [14]

Answer:

option B

Explanation:

given,

heating tap water from 16° C to 50° C

at the average rate of 0.2 kg/min

the COP of this heat pump is 2.8

power output = ?

$COP = \dfrac{Q_H}{W_{in}}\\W_{in} = \dfrac{Q_H}{COP}\\W_{in} = \dfrac{\dfrac{0.2}{60}\times 4.18\times (50-16)}{2.8}\\W_{in} = 0.169$

the required power input is 0.169 kW or 0.17 kW

hence, the correct answer is option B

7 0

2 years ago

Write multiple if statements: If carYear is before 1968, print "Probably has few safety features." (without quotes). If after 19

Rzqust [24]

Answer:

The solution code is written in Python

if(carYear < 1968):
print("Probably has few safety features.\n")
if(carYear > 1971):
print("Probably has head rests\n")
if(carYear > 1991):
print("Probably has anti-lock brakes.\n")
if(carYear > 2000):
print("Probably has tire-pressure monitor.\n")

Explanation:

To create if statement, we just use the keyword "if" and joined with an operator either < (before) or > (after). Then we can use the print function to display the message based on the condition that met.

3 0

2 years ago

Shows a closed tank holding air and oil to which is connected a U-tube mercury manometer and a pressure gage. Determine the read

damaskus [11]

Answer:

$P_2-P_1=27209h$

Explanation:

For pressure gage we can determine this by saying:

The closed tank with oil and air has a pressure of P₁ and the pressure of oil at a certain height in the U-tube on mercury is p₁gh₁. The pressure of mercury on the air in pressure gauge is p₂gh₂. The pressure of the gage is P₂.

$P_1+p_1gh_1=p_2_gh_2+P_2$