Answer:
37.96usd , 9.49usd
Explanation:
From the data given we have
cost of electricity= $0.13,
and annual cost of electricity is express as
Annual cost= power *hours*days*cost of electricity
note the unit of power must be in kilowatt(Kw),
a. to determine the cost of running 100w we first convert to kw
Hence the annual cost of running it 8.00 hours per day is calculated as
b. to determine the cost of running 25w we first convert to kw
Hence the annual cost of running it 8.00 hours per day is calculated as
Hence from the answers we can conclude that less amount of money required to run the 25w incandescent bulb compare to the 100w
Answer:
-24.76 kJ/mol
Explanation:
given,
mass of solid magnesium burned = 0.1375 g
the temperature increases by(ΔT) 1.126°C
heat capacity of of bomb calorimeter (C_{cal})= 3024 J/°C
heat absorbed by the calorimeter
heat released by the reaction
energy density will be equal to heat released by the reaction divided by the mass of magnesium
Energy density =
Energy density = -24.76 kJ/mol
heat given off by burning magnesium is equal to -24.76 kJ/mol
Displacement is your answer :)
Answer:
The answer is A.
Explanation:
The graph would show the unit rate otherwise known as a ratio
Answer:
376N
Explanation:
Newtons are a measurement of force so the answer is 376 Newtons