A 72 nC charge is located at x = 3.00 m on the x-axis and an 8.0 nC charge is located at x = 7.0 m. At what point on the x-axis is the electric field zero?
A. - 9.0 m
B. 4.0 m
C. -5.0 m
D. 6.0 m
E. 6.3 m
D. 6.0 m
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A 2.65-kg block of ice is at STP (0°C, 1 atm) while it melts completely to water. What is its change in entropy? (For ice, Lf = 3.34 × 10^5 J/kg)
a. zero b. 1 620 J/K c. 811 J/K d. 3 240 J/K e. 6 480 J/K
Pulsars could not be ordinary stars that are pulsating because the pulses are too short
a. True b. False Indicate whether the statement is true or false
Parts (a), (b), and (c) of the figure below represent three graphs of the velocities of different objects moving in straight-line paths as functions of time. The possible accelerations of each object as functions of time are shown in parts (d), (e), and (f). Match each velocity vs. time graph with the acceleration vs. time graph that best describes the motion
The ratio of mass to volume is known as ______________
Fill in the blank(s) with correct word