In this figure, if there were twice as much charge on the object on the right, would the forces still be equal and opposite?
a. Yes, but the magnitudes of the forces will be twice as large.
b. Yes, but the magnitudes of the forces will be four times as large.
c. No, because the magnitude of one of the forces would double.
d. Yes, and the magnitudes of the forces remain as before.
e. Yes, but the magnitude of the forces would be half as large.
a
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X-ray bursters are caused by black holes
a. True b. False Indicate whether the statement is true or false
X-Ray Diffraction: A researcher is using x-rays to investigating a cubic crystal. He is looking at Bragg reflection from the planes parallel to the cube faces. He finds that when using x-rays with a wavelength of 0.165 nm, a strong first maximum occurs when the beam makes an angle of 23.5° with the planes. What is the spacing of adjacent atoms in this crystal?
Fill in the blank(s) with the appropriate word(s).
Currents in Earth's molten iron core create the planet's magnetic field. These currents are probably caused by
A. radioactivity and convection. B. rotational motion and radioactivity. C. rotational motion and convection. D. rifting and subduction.
A large coal-fired electric generating plant burns about 1000 kg [one tonne] of coal every 10 seconds. About much of the tonne actually goes into producing electric energy?
A) 990 kg B) 400 kg C) 800 kg D) 100 kg E) 40 kg