If vector = -3.0 - 4.0 , and vector = +3.0 -8.0 , then the magnitude of vector = - is
A) 3.0
B) 16
C) 7.2
D) 144
E) 13.4
C
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In the context of Uranus's rings, the passage of the planet in front of a star is referred to as a(n) _____
A) ablation B) blueshift C) occultation D) fasciculation
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A. Primary B. Subsidiary C. Contextual D. Adaptive
The position of an object is given by x = at3 – bt2 + ct, where a = 4.1 m/s3, b = 2.2 m/s2, c = 1.7 m/s, and x and t are in SI units. What is the instantaneous acceleration of the object when t = 0.7 s?
A) -13 m/s2 B) 2.9 m/s2 C) 4.6 m/s2 D) 13 m/s2
Specific heat capacity of ice = 2,000 J/kg-°C latent heat of fusion of water = 334,000 J/kg specific heat capacity of water = 4,000 J/kg-°C After the 1 kg block of ice melts, the amount of heat required to raise its temperature to 10 °C is
a. 2,000 J b. 4,000 J c. 20,000 J d. 40,000 J e. 334,000 J