A man who weighs 600 N is sitting in a chair with his feet on the floor and arms resting on the armrests. The chair weighs 100 N. Each armrest exerts an upward force of 25.0 N on his arms, and the seat exerts an upward force of 500 N. What force does the floor exert on his feet?
A. 75 N upward
B. 500 N upward
C. 525 N upward
D. 50 N upward
E. 0 N
D. 50 N upward
Physics & Space Science
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A white dwarf is supported against its own gravity by the inability of its _______________ electrons to pack into a smaller volume
Fill in the blank(s) with correct word
Physics & Space Science
The radio lobes of active galaxies can span ________ of light-years
A) tens B) hundreds C) thousands D) millions E) billions
Physics & Space Science
Methyl salicylate is an ester commonly called
a. glycerine. b. oil of wintergreen. c. heroin. d. chloroform. e. methamphetamine.
Physics & Space Science
An object is 12 cm in front of a converging lens with focal length 4 cm. Where is the image?
A) 8.0 cm in front the lens B) 8.0 cm behind the lens C) 6.0 cm in front of the lens D) 6.0 cm behind the lens E) 4.0 cm in front of the lens
Physics & Space Science