Pulling out of a dive, the pilot of an airplane guides his plane into a vertical circle. At the bottom of the dive, the speed of the airplane is 320 m/s
What is the smallest radius allowable for the vertical circle if the pilot's apparent weight is not to exceed 7.0 times his true weight?
A) 2200 m B) 1700 m C) 42 m D) 1500 m E) 230 m
B
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Series/Parallel Circuits: Identical light bulbs can be attached to identical ideal batteries in three different ways (A, B, or C), as shown in the figure. The ranking (from lowest to highest) of the total power produced by the battery is
A. B, A, C B. A, B, C C. C, B, A D. A, C, B E. C, A, B
A skater spins with a roatation of 3 cycles per second. If she draws in her arms so that rotational inertia is reduced to 80% of her former amount, what will be her spin rate?
Unlike the nuclear reactions in the Sun, everyday chemical reactions involve only the electromagnetic forces
Indicate whether the statement is true or false
The cause of electrical shock is predominantly
A) excess current. B) excess voltage. C) reduced resistance. D) none of the above