You want to design an ideal Carnot heat engine that wastes only 35.0% of the heat that goes into it. The lowest cold-reservoir temperature available to you is +15.0°C. If 150.0 J of work is done per cycle, the heat input per cycle is closest to
A) 203 J
B) 231 J
C) 248 J
D) 429 J
E) 760 J
B
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A webbed website structure also is called a(n) ______ website structure.
A. random B. hybrid C. optimal D. tutorial
The bombs used against Japan were
A) two plutonium bombs. B) two fusion bombs. C) two uranium bombs. D) an fission bomb and a fusion bomb. E) a uranium bomb and a plutonium bomb.
The Tonga Trench in the Pacific Ocean is 36,000 feet deep. Assuming that sea water has an average density of 1.04 g/cm3, calculate the absolute (total) pressure at the bottom of the trench in atmospheres. (1.00 in = 2.54 cm, 1.00 atm = 1
01 × 105 Pa) A) 1.1 × 106 atm B) 1.1 × 105 atm C) 2.1 atm D) 1.1 × 108 atm E) 1.1 × 103 atm
How many joules of energy are required to accelerate a 1.0-kg mass from rest to a speed of 86.6% the speed of light? (c = 3.00 × 108 m/s)
A) 2.7 × 1012 J B) 3.0 × 103 J C) 4.5 × 109 J D) 1.8 × 1017 J E) 9.0 × 1016 J