Very high pressures, like those found deep within planetary interiors, can compress rocks so much that they stay solid even when temperatures are high enough to melt them under ordinary conditions
Indicate whether the statement is true or false
TRUE
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As a result of friction between internal parts of an isolated system
A. the total mechanical energy of the system increases. B. the total mechanical energy of the system decreases. C. the total mechanical energy of the system remains the same. D. the potential energy of the system increases but the kinetic energy remains the same. E. the kinetic energy of the system increases but the potential energy of the system remains the same.
Change in internal energy is
A) 1 – Qcold/ Qhot. B) Q/m. C) Qout/ Win. D) Q - W. E) 1 - Tcold/ Thot.
The diagram below shows the position of a long straight wire perpendicular to the page and a set of directions labeled A through H. When the current in the wire is directed up out of the page, the direction of the magnetic field at point P is
A. D. B. E. C. F. D. G. E. H.
A student weighing 700 N climbs a flight of stairs 5.0 m high. Calculate the work done