Equilibrium: A 10-m uniform beam weighing 100 N is supported horizontally by two vertical ropes at its ends. If a 400-N person sits at a point 2.0 m from the left end of the beam, what is the tension in each rope?
What will be an ideal response?
370 N (left rope), 130 N (right rope)
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Early human culture, involving villages and a sense of history, could best be described as a(n)
A) industrial culture. B) migratory culture. C) hunting culture. D) scientific culture. E) agri-culture.
Rutherford's experiments involving the use of alpha particle beams directed onto thin metal foils demonstrated the existence of which of the following?
a. proton c. nucleus b. neutron d. positron
A bobsled makes a run down an ice track starting at 250 m vertical distance up the hill. If there is no friction, what is the velocity at the bottom of the hill?
a. 35.0 m/s b. 49.5 m/s c. 46.7 m/s d. 70.0 m/s e. 58.3 m/s
The strong nuclear force is how many times as strong as the gravitation force?
A) 1038 B) 1 (They are the same.) C) 2 D) 100 E) 106