At what temperature is the Celsius scale reading equal to twice the Fahrenheit scale reading?
a. ?12.3°F
b. ?24.6°F
c. ?12.3°C
d. ?6.1°C
e. ?20°F
a
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Which of the other terrestrial planets is closest in size to Earth?
A. Venus B. Mars C. the Moon D. Mercury
Metals are good conductors of both heat and electricity due to
A) similar thermal and electrical conductive properties. B) looseness of outer electrons in metal atoms. C) relatively high densities of metals. D) high elasticity of metals. E) both transferring energy easily.
A bullet is fired from ground level with a speed of 150 m/s at an angle 30.0° above the horizontal at a location where g = 10.0 m/s2. What is the horizontal component of its velocity after 4 seconds?
A) 150 m/s B) 35 m/s C) 130 m/s D) 75.0 m/s E) 37.5 m/s
A circular coil with 600 turns has a radius of 15 cm. The coil is rotating about an axis perpendicular to a magnetic field of 0.020 T. If the maximum induced emf in the coil is 1.6 V, at what angular frequency is the coil rotating?
A) 0.30 rad/s B) 0.60 rad/s C) 0.90 rad/s D) 1.4 rad/sec E) 1.9 rad/s