How much kinetic energy does a proton gain if it is accelerated, with no friction, through a potential difference of 1.00 V? The proton is 1836 times heavier than an electron, and e = 1.60 × 10-19 C
A) 1836 eV
B) 1.00 eV
C) 1.60 × 10-19 eV
D) 1.00 J
E) 1836 J
B
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The structure of polycarbonate is _________. As a result, it is transparent, and this leads to applications such as safety-glass lenses.
Fill in the blank(s) with the appropriate word(s).
A cylindrical tank is assembled by welding steel sections circumferentially. Tank diameter is 1.5 m, thick- ness is 20 mm, and internal pressure is 2.0 MPa. The maximum tensile stress in the cylindrical part of the tank is approximately:
(A) 45 MPa
(B) 57 MPa
(C) 62 MPa
(D) 75 MPa
Compared with falling on a stone floor, a wine glass may not break when it falls on a carpeted floor because the
A) carpeted floor provides a smaller impulse. B) stopping time is shorter on the carpet. C) stopping time is longer on the carpet. D) carpet provides a smaller impulse and a longer time.
An electron, moving south, enters a magnetic field of certain strength. Because of this field the electron curves upward. What is the direction of the magnetic field?
A) downward B) towards the east C) upward D) towards the west E) towards the north