Answer:
178 kJ
Explanation:
Assuming no heat transfer out of the cooling device, and if we can neglect the energy stored in the aluminum can, the energy transferred by the canned drinks, would be equal to the change in the internal energy of the canned drinks, as follows:
ΔU = -Q = -c*m*ΔT (1)
where c= specific heat of water = 4180 J/kg*ºC
m= total mass = 6*0.355 Kg = 2.13 kg
ΔT = difference between final and initial temperatures = 20ºC
Replacing by these values in (1), we can solve for Q as follows:
Q = 4180 J/kg*ºC * 2.13 kg * -20 ºC = -178 kJ
So, the amount of heat transfer from the six canned drinks is 178 kJ.
Answer:
C
Explanation:
Sumerians invented new technologies and perfected the large-scale use of existing ones. In the process, they transformed how humans cultivated food, built dwellings, communicated and kept track of information and time
Answer:
Resistance = 3 Ω
Explanation:
As we know that, By Ohm's Law
V = IR
where
V is the voltage in volt
I is the current in amps
R is the resistance in ohm
Now,
Given that,
V = 15 volts
I = 5 amps
So,
R = V/I
= 15/5
= 3 Ω
⇒R = 3 Ω
The specific machine information concerning lubrication/maintenance found is Preventative Maintenance Manual.
<u>Explanation:</u>
Specific machine information concerning lubrication/maintenance is required for a long life term of the machine as well as for better availability and great profit. The specific machine information concerning lubrication/maintenance found is Preventative Maintenance Manual.
This manual helps the machines to have better maintenance and also prevents the danger that they might occur anytime.
This maintenance helps the equipment process day to day without any issues. Everything is kept under schedule, the past inspections are recorded, and every maintenance scheduled in future are followed under certain time and checks on the service reports.
