α-particle.••■.[1](b)Describe how an electric field between two charged plates could be used to determine whether a beam of particles consists of α- or β-particles.[2](c)Describe the path of y-rays in a magnetic field.■.[1](d)State what is meant by the term isotopes. ...
5 (a) State what is meant by the specific heat capacity of a substance.[2](b) A student carries out an experiment to find the specific heat capacity of aluminium. He uses an electric heater and a thermometer, inserted into separate holes in an aluminium block.The following dat a are o...
6 (a)State what is meant by critical angle.[1](b)Fig. 6.1 shows the cross-section of an optical fibre. The optical fibre has a very thin glass core with a diameter of 14 um. The refractive index of the glass core is 1.65.plastic cladding十airīglass core Fig. 6.1(i) The glass ...
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...
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...
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 ...
(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 ...
2 (a) (i) State what is meant by the moment of a force about a point...[1](ii) Fig. 2.1 shows a large crane on a construction site lifting a block of mass 14000 kg.operator's cabin20m AB counterweight block Fig.2.1Calculate the moment about A due to the 14000 kg block su...
(a) State what is meant by a ‘mixed sale’ and briefly explain the business tax (BT) and/or value added tax (VAT) treatment of mixed sales activities. (5 marks) 答案: 你可能感兴趣的试题 问答题 (a) 答案: 问答题 (a) Mr Zhang, a Chinese citizen, is a University professor. He ha...
What is meant by a state function? Give an example.Thermodynamic Functions:In thermodynamics, various functions include enthalpy, internal energy, pressure, volume, temperature, Gibbs energy, and many more. Therefore, categorized into two types: 1. State Functions ...