A charged particle with charge + 5.0 ?C is initially at rest. It is accelerated through a potential difference of 500 V. What is the kinetic energy of this charged particle?
A) 2.5 × 10-3 J/m
B) 2.5 × 10-3 J
C) 2500 J
D) 2500 J/m
E) 0 J
B
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This figure shows an airplane traveling east to west along Earth's equator at the same speed that Earth rotates from west to east. People on Earth would, of course, simply see the airplane fly westward at 1,670 km/hr. What is the significance of the difference in viewpoints between people on Earth and people on the Moon?
A) It shows that motion is relative not absolute. B) It shows that you can get a wrong answer if you don't view the situation from the correct perspective. C) It shows that the airplane is traveling in a direction opposite to Earth's rotation. D) It shows that airplanes can move quite fast if you view them from the right place.
Each 2.0-m length of a long cylinder (radius = 4.0 mm) has a charge of 4.0 nC distributed uniformly throughout its volume. What is the magnitude of the electric field at a point 5.0 mm from the axis of the cylinder?
A. 9.9 kN/C B. 8.1 kN/C C. 9.0 kN/C D. 7.2 kN/C E. 18 kN/C
A water line of 2 inch diameter is buried horizontally 4 feet deep in earth. Estimate the heat loss per foot from the water line if water at 50ºF flows through the line and the outside temperature of the line is assumed to be 50ºF. The surface temperature of the earth is -20ºF
What will be an ideal response?
The units of impulse are equivalent to:
a. those of energy. c. kg•m/s. b. N•s. d. those of force.