jdshjkaren jdshjkaren

24-03-2017
Physics

contestada

Two movers use a rope system to lift a box to a third-story apartment. they do 1,200 j of work on the rope system, and the rope system does 1,020 j of work on the box. what is the efficiency of the rope system?

Respuesta :

Аноним Аноним

24-03-2017

efficiency = energy output / energy input

Answer Link

chrislud010 chrislud010

06-02-2019

Efficiency = (1020 J / 1200 J) = 85%

Answer Link

Otras preguntas

Which organization is an interest group? A. the House Ways and Means Committee B. the Republican Party. the Department of Agriculture C. the Texas board o

Compare and contrast themes and topics of writers from the Americas and European writers.

Which of the following happens during prophase? A. The cell cytoplasm divides B. The nuclear membrane breaks down C. The chromatids attach to the spindle

What were the issues between the European nations that really led to war? A. militarism B. imperialism C. alliances D. all of the above E. none of the ab

Multiple sclerosis is a disease in which the immune system mistakenly destroys some of the myelin wrapped around nerve cell fibers. which nerve cell fibers are

All of the following are basic principles found in the U.S. free enterprise system except ___. A. centralized decision-making B. private property rights C.

Multiple sclerosis is a disease in which the immune system mistakenly destroys some of the myelin wrapped around nerve cell fibers. which nerve cell fibers are

Why is Hammurabi's Code important? A. It was the first time any ruler or society attempted to use written law that applied to everyone. B. It was a major step f

Hamilton's economic plans led to differences over the meaning of the Constitution. One view was that a strong federal government was most important to the succe

Is the italized participial phrase correctly placed or misplaced? Christina watered the flowers growing in the backyard. A. misplaced participial phrase B. c