A jogger has a mass of 50 kg. Express her mass in grams and micrograms (µg)
A) 50,000 g; 5 × 106 µg
B) 500,000 g; 500 × 106 µg
C) 500,000 g; 5000 µg
D) 50,000 g; 5 × 1010 µg
E) 50,000 g; 50,000 µg
D
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It can be shown that the change in entropy in heating or cooling a sample is given by the relation src="https://sciemce.com/media/4/5ecd01164bafc272.png" class="w-image" />C?
A. 0.45 J/K
B. 0.60 J/K
C. 0.90 J/K
D. 0.30 J/K
= mc ln 
where m is the mass of the sample, c is the specific heat of the sample, and 
and 
are the final and initial temperatures respectively. What is the change in entropy when 10.0 grams of lead with a specific heat of 0.452 J/gm K is heated from 10.0
C to 50.0
Jupiter completes one revolution about its own axis every 9.92 hours. What is the radius of the orbit required for a satellite to revolve about Jupiter with the same period? Jupiter has a mass of 1.90 × 1027 kg and G = 6.67 × 10-11 N ? m2/kg2
A) 1.04 × 107 m B) 2.26 × 109 m C) 1.60 × 108 m D) 3.41 × 108 m E) 7.45 × 108 m
The fact that you can see stars in the nighttime sky is evidence that
A) our atmosphere is transparent to visible light. B) light can travel in a vacuum. C) both of these D) neither of these
When heat and pressure are applied to an igneous rock it turns into
A) another sedimentary rock B) an igneous rock C) a meteorite D) a metamorphic rock