1 mA = 0.001 A
Therefore, 5 mA = 0.001 * 5
=0.005 A
Resistance = voltage / current
= 100 / 0.005
= 20000 ohms
Current = voltage / resistance
= 25 / 20000
= 0.00125 A (or) 1.25 mA
Heat pumps are also known as refrigeration units for heating and cooling homes by taking heat from air outside in the winter time and then reversed to take heat out of the inside of a home in the summertime. The Geothermal heat pumps take heat from the ground by way of buried pipes deep in ground with chemicals such as water and glycol or similar and transfers that heat into homes in the winter time.
Heating buildings
draw x,y axes.
x is deg M
y is deg C
0 of deg M = -38.9degC
100 >>> 356.9
draw st line 0,-38.9 to 100,356.9
slope is 3.95
line eq is degC = 3.95xdegM-38.9
set degC to 100. find degM
degM about 35 for boiling water
Answer:
-415 J
Explanation:
The amount of heat released when the ethylene glycol is cooled is given by:
where:
m = 3.65 kg = 3650 g is the mass of the ethylene glycol
Cs = 2.42 j/(g·°c) is the specific heat capacity of the substance
is the change in temperature of the coolant
By substituting the numbers into the equation, we find
And the sign is negative because the heat is released by the system.
Answer:
U would need to know the depth of the water
Explanation: