A compass needle in a magnetic field experiences
A) a torque.
B) a net force.
C) both of these
D) none of the above
Answer: A
You might also like to view...
Rocks with a high water content have a
A) higher melting point. B) lower melting point. C) higher pressure. D) lower pressure.
Convection in the outer layers of a star like the Sun helps mixing and makes more hydrogen available for burning.
Answer the following statement true (T) or false (F)
Relative Velocity: A boat, whose speed in still water is 8.0 m/s, crosses a river with a current of 6.0 m/s. If the boat heads perpendicular to the current, what is the speed of the boat relative to an observer standing on the shore as it crosses the river?
A. 5.3 m/s B. 6.0 m/s C. 8.0 m/s D. 10.0 m/s
A Carnot engine operates between two reservoirs with unknown temperatures. If the Carnot engine operates at efficiency, what is the ratio of the absolute temperatures of the reservoirs, Tc/Th?
A) 0.33 B) 0.0012 C) 0.0025 D) 0.67