1. Compared to gasoline, hydrogen has(A) higher energy density per unit volume and per unit mass(B) higher energy density per unit volume but lower energy density per unit massdensity per unit mass(C) lower energy density per unit volume but higher energy(D) lower energy density per unit volume and per unit mass2. A new hydroelectric power plant proposed for the Mississippi River near St. Louisis advertised as "delivering 438,000 megawatt-hours of renewable electricity to theregion annually". What is the average power output of the plant?(A) 50 MW(B) 1.2 GW(C) 438 GW(D) 438 MW3. A car accelerates from 0 to 60 miles/hour in 6 seconds. What is a good estimateof the power output of the engine?(A) the mass of the car divided by 60 miles(B) the chemical energy of the gasoline consumed during the acceleration(C) the thermal energy produced by the engine during the acceleration(D) the final kinetic energy of the car divided by 6 seconds

1. (D) lower energy density per unit volume and per unit massHydrogen has a lower energy density…

1. Compared to gasoline, hydrogen has (A) higher energy density per unit volume and per unit mass (B) higher energy density per unit volume but lower energy density per unit mass (C) lower energy density per unit volume but higher energy density per unit mass (D) lower energy density per unit volume and per unit mass

1. Compared to gasoline, hydrogen has (A) higher energy density per unit volume and per unit mass (B) higher energy density per unit volume but lower energy density per unit mass (C) lower energy density per unit volume but higher energy density per unit mass (D) lower energy density per unit volume and per unit mass

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

1. Compared to gasoline, hydrogen has
(A) higher energy density per unit volume and per unit mass
(B) higher energy density per unit volume but lower energy density per unit mass
density per unit mass
(C) lower energy density per unit volume but higher energy
(D) lower energy density per unit volume and per unit mass
2. A new hydroelectric power plant proposed for the Mississippi River near St. Louis
is advertised as "delivering 438,000 megawatt-hours of renewable electricity to the
region annually". What is the average power output of the plant?
(A) 50 MW
(B) 1.2 GW
(C) 438 GW
(D) 438 MW
3. A car accelerates from 0 to 60 miles/hour in 6 seconds. What is a good estimate
of the power output of the engine?
(A) the mass of the car divided by 60 miles
(B) the chemical energy of the gasoline consumed during the acceleration
(C) the thermal energy produced by the engine during the acceleration
(D) the final kinetic energy of the car divided by 6 seconds

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