Silver contains
conduction electrons per m3. How many conduction electrons are in a 1.0 m length of silver wire of diameter 2.6 mm?
a.
b.
c.
d.
e.
c.
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Which of the following is most unlikely to be found on Titan?
A) lakes of liquid water in the warmer equatorial regions B) lakes of liquid methane ethane C) rain or snow consisting of methane or ethane droplets or ice crystals D) volcanic outgassing of methane and other gases
A baseball is thrown by the center fielder (from shoulder level) to home plate where it is caught (on the fly at shoulder level) by the catcher. At what point does the magnitude of the vertical component of velocity have its minimum value? (air resistance is negligible)
a. just after leaving the center fielder's hand b. just before arriving at the catcher's mitt c. at the top of the trajectory d. magnitude of vertical component of velocity is constant
A radioactive substance containing 4.00 × 1016 unstable atoms has a half-life of 2.0 days. What is its activity (in curies) after 1 day?
What will be an ideal response?
A 6.0-?F capacitor is connected in series with= 5.0 M? resistor, and this combination is connected across an ideal 15-V DC battery. What is the current in the circuit when the capacitor has reached 20% of its maximum charge?
A) 6.5 ?A B) 2.4 ?A C) 1.3 ?A D) 4.7 ?A E) 9.1 ?A