An RL series circuit has: 4.8-mH coil, 2.8-? resistor, 1.0-V battery, ammeter and switch. After the switch is closed for a long time, find the final value of the current
a. 7.4E+1 A
b. 3.6E–1 A
c. 1.3E–2 A
d. 2.8E+2 A
e. 1.3E–2 A
b
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The terms velocity and speed have identical meanings in physics
Indicate whether the statement is true or false
An exerciser lifts 10.00 N weights a vertical distance of 50.00 cm. How many times would the exerciser have to lift the weight to use 10.00 Calories of energy?
A. 7,503 B. 4,125 C. 5,170 D. 8,370 E. 9,670
Can you charge an object without actually touching it with another charged object?
A. Of course not, you can only charge an object by touching it with something else charged. B. Yes, this is an example of charging by induction. C. Yes, this is an example of charging by convection. D. No, objects do not become charged.
A book is resting on a table. How many forces would be in the free-body diagram of the book?
A. one B. two of the same type C. two of different types D. three or more of the same type E. three or more of at least two different types