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。
Stephen Hawking is known for his work in physics. What was his greatest achievement? A. Winning a Nobel Prize B. Publishing many books C. Understanding the universe D. Becoming rich and famous 相关知识点: 试题来源: 解析 C。解析:斯蒂芬·霍金以在物理学方面的工作闻名,他最大的成就是理解宇宙...
Can you tell us ___? [ ] A. how to do B. what to do it C. how to do it D. what should to do 4 We can’t work out the physics problem. Can you tell us ___? A. how to do B. what to do it C. how to do it D. what should to do 反馈 收藏 ...
LateWork Anessaynotsubmittedinclassonthedue datewilllosealettergradeforeachclassperiodit islate.Ifitisnotturnedinbythe4thdayafter theduedate,itwillearnazero.Dailyassignmentsnotcompletedduringclasswillgetazero. Shortwritingsmissedasaresultofanexcused absencewillbeaccepted. 1.Whereisthistextprobablytakenfrom? A....
This means that power is the rate at which work is done. For example, if an object is moved a certain distance in a shorter amount of time, more power is being used to do the work. What are some examples of work in everyday life? Some examples of work in everyday life include ...
Tom is a scientist. What field does he work in? A. Physics. B. Chemistry. C. Biology. D. Mathematics. 相关知识点: 试题来源: 解析 A。本题考查对人物职业领域的理解。文中提到 Tom 是一位科学家,且对其在物理领域的研究有介绍,可推出他工作的领域是 physics(物理)。选项 B、C、D 在文中...
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In physics, one way to distinguish between mass and matter is to define matter as a substance consisting of particles that exhibit rest mass. Even so, in physics and chemistry, matter exhibits wave-particle duality, so it has properties of both waves and particles....
Force is everywhere and it comes in a variety of sizes, directions, and type. We can define Force as the push or pull of an object. Learn Force definition, unit & types of Force with solved examples.