Heat is
A) temperature.
B) thermal energy.
C) thermal energy flowing from hot to cold.
D) radiant energy.
Answer: C
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Which Terrestrial planet has the combination of most rapid rotation, liquid interior, and strongest magnetic field?
a. Venus b. Mercury c. Earth d. Mars
A 4.00-kg mass is attached to a very light ideal spring hanging vertically and hangs at rest in the equilibrium position
The spring constant of the spring is 1.00 N/cm. The mass is pulled downward 2.00 cm and released. What is the speed of the mass when it is 1.00 cm above the point from which it was released? A) 0.0443 m/s B) 0.0744 m/s C) 0.0201 m/s D) 0.0866 m/s E) The mass will not reach the height specified.
A charge of 1.0 × 10-6 ?C is located inside a sphere, 1.25 cm from its center. What is the electric flux through the sphere due to this charge? (?0 = 8.85 × 10-12 C2/N • m2)
A) 0.11 N • m2/C B) 8.9 N • m2/C C) 0.028? N • m2/C D) It cannot be determined without knowing the radius of the sphere.
The focal length of a converging lens is 10 cm. What is the angular magnification of this lens if the image is viewed by a relaxed eye with a near point of 25 cm?
A) 0.50 B) 1.5 C) 2.5 D) 3.5 E) 4.5