Who was the one of the first scientists to suggest that Mars may be inhabited?
A) William Herschel
B) Percival Lowell
C) Giovanni Schiaparelli
D) Angelo Secchi
A
You might also like to view...
Free Fall: Two objects are thrown from the top of a tall building. One is thrown up, and the other is thrown down, both with the same initial speed. What are their speeds when they hit the street? Neglect air resistance.
A. The one thrown up is traveling faster. B. The one thrown down is traveling faster. C. They are traveling at the same speed. D. It is impossible to tell because the height of the building is not given.
What two quantities did Edwin Hubble compare for a sample of galaxies to discover the expansion of the universe?
A) velocity and distance B) luminosity and distance C) velocity and temperature D) luminosity and temperature E) age and distance
A ?+ particle, composed of uus quarks, has the same ____ as a proton
a. baryon number and charm. b. baryon number and electric charge. c. baryon number and strangeness. d. baryon number, electric charge, and charm. e. electric charge and strangeness.
To recharge a 12-V battery, a battery charger must move 3.6 × 10^5 C of charge from the negative to the positive terminal. What amount of work is done by the battery charger? How many kilowatt hours is this?