百度试题 结果1 题目The formula for calculating work done in physics is: A. Work = Force × Distance B. Work = Force × Time C. Work = Mass × Acceleration D. Work = Force × Velocity 相关知识点: 试题来源: 解析 A 反馈 收藏
Although he knew little about the work done in the field of physics, he succeeded ___ other experienced experts failed.whichthatwhatwhere 相关知识点: 试题来源: 解析 【答案】 D 句意:虽然他对物理方面的工作一窍不通,但是他在其他比他有经验的专家失败的地方成功了。分析句意和结构可知,where oth...
1 Although he knew little about the work done in the field of physics,he succeed---other experienced experts failed.A which B that C what D where2 ---upset st the exam result at the beginning of the term,Amy has the determination to try her best this year,---have all her ...
In physics, the term work refers to the transference of energy that occurs when a force is applied to a body that is moving in such a way that the force has a component in the direction of the body's motion. Thus work is done on a weight that is being lifted, or on a spring tha...
Q.1. When is work done negative? Ans.Work done is negative when the displacement caused is in the direction opposite to the direction of the force. Q.2. What is work in Physics? Ans.Work is the product of force and displacement in the direction of the force. ...
In physics, work is done when a force acts on an object and causes a ___ in its position. A. movement B. shift C. change D. displacement 相关知识点: 试题来源: 解析 D。“displacement(位移)”在物理中是指位置的变化。选项 A“movement(运动)”比较宽泛,选项 B“shift(转移)”不太准确,...
How does the field of physics define “work”?A) It is the research done by physicists in a laboratory.B) It is the change in speed of a falling object.C) It is the amount of energy in the solar system.D) It is the ability to move an object.2.Why does the professor talk about...
The term work was first introduced by the French mathematician GaspardGustave Coriolis in 1826.Work done by a force acting on the object is equal to the magnitude of the force multiplied by the distance moved in the direction of the force and it is calculated as − Work done WW = Force...
Useful work does include that done in climbing stairs or accelerating to a full run, because these are accomplished by exerting forces on the outside world. Forces exerted by the body are nonconservative, so that they can change the mechanical energy (KE + PE) of the system worked upon, ...
social service, welfare work - an organized activity to improve the condition of disadvantaged people in society toil, labor, labour - productive work (especially physical work done for wages); "his labor did not require a great deal of skill" subbing, substituting - working as a substitute ...