At what frequency does a 10. ?F capacitor have a reactance of 0.12 k??
What will be an ideal response?
0.13 kHz
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A 7.50-kg bowling ball strikes a 5.20-kg pin. The pin flies forward with a velocity of 4.00 m/s; the ball continues forward at 5.50 m/s. What was the original velocity of the ball?
a. 11.3 m/s b. 8.27 m/s c. 0.128 m/s d. 1.34 m/s e. 4.61 m/s
The Sun has been on the main sequence
a. for about 10 million years. b. for about 5 billion years. c. forever. d. for about 14 billion years.
A 10-V battery is connected to a 15-? resistor and an unknown resistor R, as shown. The current in the circuit is 0.40 A. How much heat is produced in the 15-? resistor in 2.0 min?
a.
0.40 kJ
b.
0.19 kJ
c.
0.29 kJ
d.
0.72 kJ
e.
0.80 kJ
Graphical Analysis: The figure shows a graph of the position of a moving object as a function of time. What is the velocity of the object at each of the following times?(a) At t = 1.0 s(b) At t = 2.5 s(c) At t = 4.0 s(d) At t = 5.5 s
What will be an ideal response?