Category: Physics

Why is DAB reception so poor? Much worse – because it’s an older CODEC. Internet radio feeds will be using AAC or other more efficient CODECs. The only station which broadcasts on DAB with decent quality is Radio 3, and even that is -just- OK. Generally, assuming you’ve got internet coverage, you’re better off streaming […]

Is a 50 profit margin good? You may be asking yourself, “what is a good profit margin?” A good margin will vary considerably by industry, but as a general rule of thumb, a 10% net profit margin is considered average, a 20% margin is considered high (or “good”), and a 5% margin is low. What […]

What are the factors affecting consumer buying behavior? 3.2 The factors which influence consumer behaviour Psychological (motivation, perception, learning, beliefs and attitudes) Personal (age and life-cycle stage, occupation, economic circumstances, lifestyle, personality and self concept) Social (reference groups, family, roles and status) Cultural (culture, subculture, social class system). What are the stages of the decision […]

Does specific heat depend on phase? The symbol c stands for specific heat and depends on the material and phase. The specific heat is the amount of heat necessary to change the temperature of 1.00 kg of mass by 1.00ºC. What material has the highest specific heat? Liquid water What does CPK 1.33 mean? capable […]

What are the two types of sport psychologists? Generally, there are two different types of sport psychologists: educational and clinical. Can Exercise physiologists diagnose? Accredited exercise physiologists do not provide invasive services (except for point of care testing), diagnosis, joint manipulation or pharmaceutical medicines. Is exercise science and exercise physiology the same thing? Exercise science […]

Can generator be used as motor? In principle, any electrical generator can also serve as an electric motor, or vice versa. In hybrid vehicles and other lightweight power systems, a “motor–generator” is a single electric machine that can be used as an electric motor or a generator, converting between electrical power and mechanical power. How […]

What is the height of water? Depth and hydrostatic pressure Height of Water Column Pressure (m) (ft) (psi) 2 6.56 2.85 3 9.84 4.27 4 13.1 5.69 Can the height of a column of water be used to determine pressure? In a barometer, the height, h, of the column of liquid is used as a […]

What is the independent variable in a function? An independent variable is a variable that represents a quantity that is being manipulated in an experiment. In the context of a function, the independent variables are the inputs to the function and the dependent variables are the outputs of the function. … What are some examples […]

Which agent has the most kinetic energy? Wind energy What are two ways to increase an object’s potential energy? What are two ways to increase potential energy? The larger the weight of an object the more potential energy it has and the further the object from the Earth’s surface the more potential energy it has. […]

What happens to the coefficient of friction when the weight is increased? What happens to the coefficient of friction, when weight of the body is doubled? Coefficient of Friction is defined as the ratio of the max resisting force parallel to the contact surface to the forces pressing them together. Therefore, by doubling the weight, […]