When Burl and Paul on a sign-painting scaffold are in equilibrium, the net upward supporting force of the vertical ropes is
A. equal and opposite to the combined weights of Burl, Paul, and the scaffold.
B. greater than their weights.
C. equal to their weights.
D. none of the above
Answer: A
You might also like to view...
The most water can be held within a soil mixture consisting of equal masses of which soil types?
A) Sand and silt B) Clay and sand C) Silt and clay D) Small stones and sand
The Mediterranean shrubland biome is the most extensive terrestrial biome
Indicate whether the statement is true or false
The cycling of chemical substances throughout the biosphere is accomplished through
A. vertical transfer of momentum. B. the rock cycle. C. the first law of thermodynamics. D. the work of living things and physical and chemical processes.
Define air mass. What is air-mass weather?
What will be an ideal response?