When gasoline is burned, it gives off 41 000 J/g of heat energy. If an automobile uses 14.1 kg of gasoline per hour with an efficiency of 23.0%, what is the average horsepower output of the engine? (1 hp = 746 W)
a. 49.5 hp
b. 105 hp
c. 35.1 hp
d. 29.8 hp
e. 59.5 hp
a
Physics & Space Science
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The Chandrasekhar mass limit is
A) .08 solar masses. B) .4 solar masses. C) 1.4 solar masses. D) 3 solar masses. E) 8 solar masses.
Physics & Space Science
A lobster crawls onto a bathroom scale submerged on the ocean bottom. Compared to its weight above the surface, its weight under water is
A) greater. B) less. C) the same.
Physics & Space Science
When the equation NH4NO3? N2O + H2O is balanced, the total of all the coefficients (both written and "understood") is
a. 3. b. 4. c. 7. d. 8.
Physics & Space Science
How long would each of the materials on the list in Table 10.1 last at the 2000 use rate assuming the reserves given in 1968 were still correct? Compare your answers to those given in Table 10.3
What will be an ideal response?
Physics & Space Science