In applications where electrical shocks may be more likely, such as around water in kitchens and bathrooms, special outlets called GFI's are used. What does GFI stand for?
a. get free instantly
b. ground-fault interrupter
c. give fast interruption
d. gravity-free insulator
b
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Suppose you find a rock that contains 10 micrograms of radioactive potassium-40, which has a half-life of 1. 25 billion years
By measuring the amount of its decay product (argon-40 ) present in the rock, you conclude that there must have been 80 micrograms of potassium-40 when the rock solidified. How old is the rock? A) 1.25 billion years B) 2.5 billion years C) 3.75 billion years D) 5.0 billion years
All of the Galilean moons are heavily cratered.
Answer the following statement true (T) or false (F)
Three capacitors are connected as shown in the figure. What is the equivalent capacitance
What will be an ideal response?
According to the selection rule, when a photon is emitted or absorbed, transitions can only occur between state with values of ? that differ by
A) five units. B) four units. C) three units. D) two units. E) one unit.