A. Power is equal to work divided by time. B. Power is equal to time divided by work. C. Power is equal to work multiplied by time. D. Power is E. qual to the sum of work and time. 相关知识点: 试题来源: 解析 A。本题考查功率、功和时间的关系。功率等于功除以时间,A 选项正确。
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Power is the rate of doing work or the rate of transfer of energy. If W is the amount of work done in time t, the power is given by the expression, Power = Work/Time = Energy/Time P= W//T It is expressed in watt (W).
8.Whatcanwelearnabouttheparticipantsinthe study? A.Thewhitesaremoreaggressive. B.Thewhitesgothighereducation. C.Moreblacksthanwhitesdiedyoung. D.Morewhitesthanblacksdiedofcancer. 9.Comparedwitheducation,theinfluenceofrace ondeathratesis . A.significant B.unnoticeable C.growing D.long-lasting 10.Whatdo...
In Physics, force is defined as: The push or pull on an object with mass causes it to change its velocity. Force is an external agent capable of changing a body’s state of rest or motion. It has a magnitude and a direction. The direction towards which the force is applied is known...
740.Albert Einstein, who is perhaps the greatest scientist in modern physics, is often considered one of the smartest men who ever lived. 阿尔伯特·爱因斯坦——这位或许是现代物理学领域最伟大的科学家——被公认是有史以来...
Here, AP Board Class 9 students will find everything about the diversity, present among living organisms, and they will also learn how to classify them as well as understand terms like evolution and nomenclature from this AP Board Class 9 Biology Chapter
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