Why does the sky turn pink at sunset? Well when the sun sets, it is lower down and the light has further to travel. Light is made up of all different colours – that’s why we get rainbows. Blue light can’t travel very far so much of it ‘scatters’ out before it reaches us. But […]
How many circles do you need to balance the scale?
Is milk a Newtonian fluid?
Is milk a Newtonian fluid? Newtonian fluids are those having a constant viscosity dependent on temperature but independent of the applied shear rate. Low-concentration liquids in general, such as whole milk and skim milk, may for practical purposes be characterized as Newtonian fluids. Is honey a non Newtonian? Honey is an example of a non-Newtonian […]
What are some safety measures during severe bad weather changes?
What are some safety measures during severe bad weather changes? Stay indoors and move to a shelter – either an internal, ground-floor room with no windows or an official shelter nearby. Board up windows if you know about severe weather far enough in advance. Avoid metal, electrical, and tall objects during a thunderstorm. Never drive […]
What does high or low specific heat capacity mean?
What does high or low specific heat capacity mean? A substance with a high specific heat capacity can absorb a large quantity of heat before it will raise in temperature (water has a high specific heat). A substance with a low specific heat requires relatively little heat to raise its temperature (copper has a low […]
How long does a nuclear fuel rod last?
How long does a nuclear fuel rod last? To make that nuclear reaction that makes that heat, those uranium pellets are the fuel. And just like any fuel, it gets used up eventually. Your 12-foot-long fuel rod full of those uranium pellet, lasts about six years in a reactor, until the fission process uses that […]
What best compares radiation and conduction?
What best compares radiation and conduction? The statements that best compares radiation and conduction are the following: both transfer thermal energy from warm objects to cooler objects and both can transfer energy through matter. The difference is that conduction is through direct heat transfer; whereas, radiation transfers heat through waves. What describes how radiation moves? […]
Which acid is present in our stomach?
Which acid is present in our stomach? hydrochloric acid Does hydrochloric acid turns red litmus blue? In the given question, first the blue litmus paper was dipped in hydrochloric acid solution. Thus, the litmus would turn red. Further, when dipped in sodium hydroxide solution, it changes back to blue. Thus, the correct answer is B. […]
What products increase friction?
What products increase friction? There are two methods of increasing friction: one is by making the surfaces rough and the other by increasing the mass of the object that is moving. For example, the tyres of vehicles have treads (these are the ‘designs’ that you can see on the tyre surface), which increase the friction […]
What is the dimension of radiation intensity?
What is the dimension of radiation intensity? Hence, the unit of intensity will be kgm2s−2m2s=kgm0s−3. Mass has the unit of kg, length has the unit of m and time has the unit of s. Therefore, the dimensional formula of intensity is [ML0T−3]. What is the dimension of radiation? In this work it is shown that […]