(3) State what is meant by the term alley. 相关知识点: 试题来源: 解析 An alloy is a mixture of metals, or a mixture of a metal and another element. Alloys are defined by a metallic bonding character. Alloys are made to create materials with enhanced properties or desired characteristic...
2 (a) State what is meant by kinetic energy.相关知识点: 试题来源: 解析 动能是物体由于其运动而具有的能量。物体运动得越快,其动能就越大。例如,一辆快速行驶的汽车比一辆缓慢行驶的汽车具有更大的动能。 问题要求解释动能的含义。参考答案“动能是物体由于其运动而具有的能量”简洁明了地回答了这个问题,是...
* Diversity scheme, a method for improving the reliability of a message signal by using multiple communications channels * Diversity jurisdiction, a concept under which U.S. federal courts can hear suits between parties from different states1. b) What is meant by the term "Dignity"?If you ...
The ground state of an atom refers to its lowest energy state, where the atom's electrons occupy the lowest energy levels possible, resulting in the most stable configuration for the atom. 原子的基态是指原子处于最低能量状态,此时原子中的电子占据着能量最低的轨道,即最靠近原子核的轨道。这是原子...
2 (a) State what is meant by work done.---[1](b) A beach ball is released from a balcony at the top of a tall building. The ball falls vertically from rest and reaches a constant (terminal) velocity. The gravitational potential energy of the ball decreases by 60J as it f...
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...
解析 The frequency of a progressive wave is the number of cycles of the wave that pass a fixed point per unit time. 频率是指单位时间内波形重复的次数。对于进行波来说,频率指的是单位时间内波形经过某一点的次数。 简而言之,频率代表了波的振动速度,它决定了波的音调或颜色。
(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 ...
3 (a)State what is meant by simple harmonic motion.[2](b) A trolley o f mass m is held on a horizontal surface by means o f two springs. One spring is attached to a fixed point P. The other spring is connected to an oscillator, as shown in Fig. 3.1.spring trolley spring osc...
百度试题 结果1 题目(a) State what is meant by a gravitational field. bó 1...。[1] 相关知识点: 试题来源: 解析 Region of space in which a mass experiences a force 反馈 收藏