What is the shield volcano shape?
What will be an ideal response?
Flat and wide
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When a thin copper wire that is 178 m long is connected between a 1.2-V potential difference, the current through the wire is 2.0 amps. What is the diameter of this wire? The resistivity of copper is 1.72 × 10-8 ? ? m
What will be an ideal response?
Rutherford's experiment, in which he fired alpha particles of 7.7 MeV kinetic energy at a thin gold foil, showed that nuclei were very much smaller than the size of an atom because
a. some alpha particles passed through the foil undeflected. b. some alpha particles were deflected backwards. c. some alpha particles were captured by the gold nuclei. d. the alpha particles could not get closer than 10-10 m to the gold nuclei. e. the alpha particles split into deuterium nuclei when they encountered the gold nuclei.
A uniformly charged rod (length = 2.0 m, charge per unit length = 5.0 nC/m) is bent to form one quadrant of a circle. What is the magnitude of the electric field at the center of the circle?
a. 62 N/C b. 56 N/C c. 50 N/C d. 44 N/C e. 25 N/C
String theories, like GUTs, explain how gravity was combined with the other fundamental forces in the very early universe
Indicate whether the statement is true or false