A charge of -4.00 nC is located at (0, 1.00) m. What is the x component of the electric field due to the charge at (4.00, -2.00) m?
1.1.15 N/C
2.-0.864 N/C
3.1.44 N/C
4.-1.15 N/C
5.0.864 N/C
4
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Suppose your normal resting heart rate is 60 beats per minute. Now, suppose you board a spaceship that travels away from Earth at 90% of the speed of light. While on the ship, you measure your heart rate. What will it be?
A) It will still be 60 beats per minute. B) It will be 46 beats per minute. C) It will be 74 beats per minute. D) It will be 12 beats per minute.
Two water waves, call them X and Y, have the same amplitude but different wavelengths: X has a longer wavelength than Y. Regarding their frequencies and their energies,
A) X has the larger (higher) frequency and carries the greater energy. B) Y has the larger frequency and X carries the greater energy. C) Y has the larger frequency and carries the greater energy. D) X has the larger frequency and Y carries the greater energy. E) Y has the larger frequency and the two waves carry the same energy.
Power is the rate at which
A) energy is transferred. B) voltage can be changed. C) current can be induced.
In Figure 5.14, the external force P is closest to:
A) 170 N B) 190 N C) 210 N D) 230 N E) 250 N