Which temperature scale has the smallest sized degrees?
A) Fahrenheit
B) Celsius
C) Kelvin
D) none of the above
Answer: A
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Phil stands at rest with both feet on a scale that reads 500 N. When he gently lifts one foot, the scale reads
A) less than 500 N. B) 500 N. C) more than 500 N.
Compared to a cluster containing type O and B stars, a cluster with only type F and cooler stars will be
A) further away. B) older. C) younger. D) more obscured by dust. E) less obscured by dust.
If ? = 40° and the tension in string 2 is 30 N, determine M.
A. 3.4 kg B. 3.6 kg C. 2.6 kg D. 4.9 kg E. 7.5 kg
Energy and Momentum: In a police ballistics test, a 2.00-g bullet suddenly hits and becomes embedded in a 5.00-kg wood block which is hanging from a 1.20-m long string. This causes the block to swing through an arc of 3.50°. What was the speed of the bullet just before it hit the block?
A. 16.7 m/s B. 524 m/s C. 25.3 m/s D. 262 m/s E. 789 m/s