A person weighs 30 lb on the moon, where g = 32 ft/s2.Determine (a) the mass of the person; and (b) the weight of the person on earth.Convert the following: (a) 400 lb ft to kN • m; (b) 6 m/s to mi/h;(c) 20 lb/in.2 to kPa; and (d) 500 slug/in. to kg/m.The kinetic energy of a car of mass, m moving with velocity v is E = mv2/2. If m = 1000 kg and v = 6 m/s, compute E in (a) kN · m; and (b) lb ft.A differential equation is d^2/dt^2=Ay^2=byt where y represents a distance and 1 is time. Determine the dimensions of constants A and B for which the equation will be dimensionally homogeneous.Calculate the gravitational force between the earth and the moon in newtons. The distance between the earth and the moon is 384 x 103Note: mass of earth = 5.9742 X 1024 kg, radius of earth = 6378 km, mass of moon = 0.073 483 x 1024 kg, radius of moon = 1737 km.

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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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A person weighs 30 lb on the moon, where g = 32 ft/s².Determine (a) the mass of the person; and (b) the weight of the person on earth.
Convert the following: (a) 400 lb ft to kN • m; (b) 6 m/s to mi/h;(c) 20 lb/in.2 to kPa; and (d) 500 slug/in. to kg/m.
The kinetic energy of a car of mass, m moving with velocity v is E = mv²/2. If m = 1000 kg and v = 6 m/s, compute E in (a) kN · m; and (b) lb ft.
A differential equation is d^2/dt^2=Ay^2=byt where y represents a distance and 1 is time. Determine the dimensions of constants A and B for which the equation will be dimensionally homogeneous.
Calculate the gravitational force between the earth and the moon in newtons. The distance between the earth and the moon is 384 x 10³

Note: mass of earth = 5.9742 X 10²⁴ kg, radius of earth = 6378 km, mass of moon = 0.073 483 x 10²⁴ kg, radius of moon = 1737 km.

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