The most important reason that an alpha particle can be stopped by a single sheet of paper while an electron of the same energy might not be stopped by hundreds of sheets of paper is that the alpha particle
A. Is a nucleus, while the electron is not.
B. Moves more slowly than the electron.
C. Interacts more strongly than the electron does.
D. Has greater mass than the electron.
E. Has more charge than the electron.
B. Moves more slowly than the electron.
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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. E. B. F. C. G. D. H. E. A.
Kinetic energy is conserved in __________ collisions
Fill in the blank(s) with correct word
A car moving at 10.0 m/s encounters a bump that has a circular cross-section with a radius of 30.0 m. What is the normal force exerted by the seat of the car on a 60.0-kg passenger when the car is at the top of the bump?
A) 200 N B) 389 N C) 789 N D) 489 N E) 589 N
A 60.0-Hz ac generator with a peak voltage of 110 V drives a series RC circuit with R = 10.0 ? and C = 300 ?F. The peak current in the circuit is
a. 8.24 A. b. 8.84 A. c. 11.0 A. d. 12.4 A. e. 23.5 A.