Determine the cost of operating an electric range for a year. Assume the cost of electricity is $0.08/kWh
What will be an ideal response?
According to Table 8.7, a range with a large surface unit (the most common) uses
a total of 614 kWh + 197 kWh = 811 kWh every year. The net cost of cooking is 811
kWh x $0.08/kWh = $64.88.
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If we say that an object is 1,000 light-years away we see it
a. as it looked 1,000 years ago. b. as it would appear to our ancestors 1,000 years ago. c. as it looked 1,000 light-years ago. d. as it is right now, but it appears 1,000 times dimmer.
The image of an object placed in front
of a concave mirror is always upright.
1.True 2.FalseDielectrics: An air-filled capacitor carries enough charge to store 6.00 mJ of potential energy. It is then accidentally filled with water in such a way as not to discharge its plates. How much energy does it continue to store after it is filled? The dielectric constant for water is 78 and for air it is 1.0006.
A. 0.077 mJ B. 468 mJ C. 0.04 mJ D. 6.00 mJ
What is the hardest mineral known?
What will be an ideal response?