How do you keep a water bath at constant temperature? Example: You want the water to be at a constant 70c, heat the water up and put it in the main container, if its too hot then pour cold water, and vice versa. Once the temperature drops by a couple of degrees pour hot water […]
What are the 3 definitions of health?
What are the 3 definitions of health? Health is a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity. Why do we need models of health? model increases understanding of the relationship between stressors, coping and health. Why should we consider the wider determinants of health? As […]
How effective is tidal energy?
How effective is tidal energy? Tidal turbines are 80% efficient, which is higher than solar or wind energy generators. Barrages reduce the damage of high tidal surges on the land. What are the negatives of tidal energy? Disadvantages of tidal energy Limited installation sites. In order for a tidal power plant to be built, the […]
Why is a Spherometer called so?
Why is a Spherometer called so? A spherometer basically is a precision instrument to measure very small lengths. Its name reflects the way it is used to measure the radii of curvature of spherical surfaces. Where is Spherometer used? The Spherometer is a device use in measuring the radius of curvature of a spherical surface. […]
Is wavelength directly proportional to frequency?
Is wavelength directly proportional to frequency? Wavelength is commonly designated by the Greek letter lambda (λ). Assuming a sinusoidal wave moving at a fixed wave speed, wavelength is inversely proportional to frequency of the wave: waves with higher frequencies have shorter wavelengths, and lower frequencies have longer wavelengths. Which Colour Has Highest intensity? violet What […]
What are 3 factors that influence climate?
What are 3 factors that influence climate? 3.1 Factors affecting climate distance from the sea. ocean currents. direction of prevailing winds. shape of the land (known as ‘relief’ or ‘topography’) distance from the equator. the El Niño phenomenon. Which is the only country in the world that is carbon negative? Bhutan Is Bhutan a poor […]
What does refractive index indicate?
What does refractive index indicate? Refractive index, also called index of refraction, measure of the bending of a ray of light when passing from one medium into another. Refractive index is also equal to the velocity of light c of a given wavelength in empty space divided by its velocity v in a substance, or […]
Which sense would be most difficult to live without?
Why does sky turn pink?
What is gamma decay stopped by?
What is gamma decay stopped by? Gamma radiation is the most penetrating. It can penetrate air, paper or thin metal. It may only be stopped by many centimetres of lead or many metres of concrete. What is the strongest ionizing radiation? Alpha particles What is the most dangerous type of ionizing radiation? Gamma rays are […]