Why do neutrons make better nuclear probes than alpha particles?
a. Neutrons are more massive than alpha particles.
b. A neutron has less mass than an alpha particle.
c. Neutrons are not subject to the strong force.
d. Neutrons have about the same mass as a proton.
e. Neutrons have no electrical charge.
e
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Phase Angles: A 120-V rms voltage at 60 Hz is applied across an RC circuit. The rms value of the current in the circuit is 0.60 A, and it leads the voltage by 60°. What is the capacitance in this circuit?
A. 13 ?F B. 14 ?F C. 15 ?F D. 16 ?F E. 17 ?F
If your mass is 60 kilograms on Earth, what would your mass be on the Moon?
A) 10 pounds B) 10 kilograms C) 360 kilograms D) 60 kilograms E) 60 pounds
This visible-light photo shows a starburst galaxy. What is going on with the reddish gas that seems to be emerging on both sides of it?
A) It is gas being blown out in a galactic wind. B) It is gas from a protogalactic cloud that is still falling inward toward the galactic center. C) The gas represents jets being shot out from the region of a supermassive black hole. D) The gas consists of many individual stars that are bursting out from the central regions of the galaxy.
How does the size of a planet determine its internal temperature?
What will be an ideal response?