Thirty microcoulombs of NEGATIVE charge experiences an electrostatic force of 27. mN. What is the magnitude and direction of the electric field?
What will be an ideal response?
0.90 kN/C (or kV/m) in the direction opposite the force
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Which of the following may explain the failure to observe Population III stars?
A. Population III stars had their surfaces contaminated by remnants of massive stars. B. We do not expect to observe Population III stars, because pure hydrogen and helium stars never formed. C. The first stars to be formed in the young Milky Way are too far away to be detected. D. None of these choices is correct.
What potential difference is needed to accelerate a proton from rest to give it a wavelength of 2.00 × 10^–12 m?
a. 411 V b. 206 V c. 1650 V d. 617 V
If you filter sea water to remove all of the particles you would be left with a clear
A) homogeneous mixture called a solution. B) homogeneous mixture called a suspension. C) heterogeneous mixture called a solution. D) heterogeneous mixture called a suspension. E) pure liquid.
Power: A series ac circuit containing a resistor, inductor, and a capacitor has a peak voltage of 116 V and a peak current of 2.00 A. If the current lags the voltage by 52.0°, what is the average power of the circuit?
A. 71 W B. 142 W C. 148 W D. 296 W