Burl and Paul have a total weight of 1300 N. The tensions in the ropes that support the scaffold they stand on add to 1700 N. The weight of the scaffold itself must be
A) 400 N.
B) 500 N.
C) 600 N.
D) 800 N.
Answer: A
You might also like to view...
Molar Specific Heats: A certain ideal gas has a molar specific heat at constant volume 7R/2. What is its molar specific heat at constant pressure?
A. 5R/2 B. 3R/2 C. 8R D. 9R/2 E. 6R
Heavy atoms are not appreciably larger in size than light atoms because the nuclei of heavy atoms have more
A) mass. B) electric charge. C) nucleons. D) all of the above E) none of the above
A 100-? resistor is connected in series with a 10.0-mH inductor across an ac source operating at 1.00 kHz. What is the impedance of this circuit?
A) 100 ? B) 200 ? C) 1000 ? D) 236 ? E) 118 ?
Most active galactic nuclei are powered by:
A) supermassive black holes. B) a large number of supernovae. C) mergers of compact objects. D) black hole mergers. E) extra-terrestrial civilizations.