8 (a) Explain what is meant by an electric field.[1](b)The charges on an isolated metal sphere are uniformly distributed on its surface. Fig. 8.1shows a positively charged metal sphere A.On Fig. 8.1, draw the charge distribution on the sphere and the electric field around it.A Fig....
相关知识点: 试题来源: 解析 在波的上下文中,位移是指介质中的粒子从其平衡位置移动的距离。 在波的传播过程中,介质中的粒子会围绕其平衡位置振动。位移指的是粒子在某一时刻偏离其平衡位置的距离,可以是正值或负值,取决于粒子相对于平衡位置的位置。反馈 收藏 ...
This iswhat is meant bythinking in terms of the majority. 这就是照顾多数的观点. 互联网 I am not even certainwhat is meant byplacental fluid. 我甚至不确定“胎液”到底指的是什么. 互联网 First,what is meant byanguish? 首先, 痛苦是什么意思?
(a) State what is meant by the specific latent heat of fusion (melting) of a substance.[2] 相关知识点: 试题来源: 解析 (a) energy/heat needed to change state of substance/melt(from solid to liquid at constant temperature/ melting point) per kg/per unit mass ...
这里meant 是mean 的被动语态。例(1)：主动语态： “Forthrightness” means what?被动语态： What is meant by “forthrightness”?例(2)：主动语态： Rita writes a letter.被动语态： A letter is written by Rita.例(3)：主动语态： 一辆车撞死了行人 被动语态： 行人被一辆车撞死...
题目(a) State what is meant by the photoelectric effect. 相关知识点: 试题来源: 解析 The emission of electrons from the surface of a metal when EM radiation [1] of high enough frequency [1] is incident on the surface. 反馈 收藏
The resulting oscillations o f the trolley are simple harmonic.The acceleration a o f the trolley is given by the expression。=-()×where x is the displacement o f the trolley from its equilibrium position.The mass o f the trolley is 840g.Calculate the frequency f o f oscillation o f...
4 (a) State what is meant by the term polarisation when applied to a wave.[1](b)Explain why only transverse waves can be polarised.[2](c)Some films released have enabled viewing in three dimensions (3D). This can be done using two superimposed polarised images on the screen. One of ...
Is complacency a bad thing? 1 : self-satisfaction especially when accompanied by unawareness of actual dangers or deficiencies When it comes to safety,complacency can be dangerous. How do I stop being so complacent? Here are five steps to avoid complacency once you've achieved your dream goal....
What factors does it depend on ? View Solution What is meant by the quality (or timbre) of sound? On what factor does the quality (or timbre) of a sound depend? View Solution The loudness of sound depends upon View Solution The loudness of sound is related to: View Solution...