What is the kinetic energy of a 5,000 kg truck traveling at 25 m/s?
1,562,500 J
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A light bulb operating at a voltage of 120 V has a resistance of 200 ?. What is the power?
A) 100 W B) 60 W C) 72 W D) 14 x 10-3 W E) 7.2 W
Resistance and Resistivity: When a thin copper wire that is 178 m long is connected between a 1.2-V potential difference, a current of 2.0 amps flows through the wire. What is the diameter of this wire? The resistivity of copper is 1.72 × 10-8 ? ? m.
Fill in the blank(s) with the appropriate word(s).
A body is oscillating up and down at the end of a spring. Let's consider when the body is at the top of its up and down motion. The acceleration
a. is zero c. points up b. has its largest magnitude d. points down
Two 4. ? resistors are connected in parallel, and this combination is connected in series with 3 ?. What is the effective resistance of this combination?
A) 11. ? B) 5. ? C) 7. ? D) 1.2 ? E) 4. ?