Category: Physics

Why does an apple look green? Green apples appear green because of chlorophyll in the peel. In red apples, the colour of chlorophyll is masked by the presence of anthocyanins, which are red in colour. Interestingly, anthocyanins accumulate in vacuoles, while the chlorophylls are present in chloroplasts of apple peel cells. Why is the color […]

Why are the mirror fitted on the outside of cars convex? Convex mirrors have the ability to cover wider field of view by forming diminished and virtual image of the objects. Thus, the mirrors fitted on the outside of cars are convex so that larger view of the road can be observed by the driver […]

How many whooping cranes are left today? We appreciate your contribution to the recovery of the Whooping Crane Eastern Migratory Population. This report is produced by the International Crane Foundation. The current estimated population size is 80 (39 F, 38 M, 3 U). Seventeen of these 80 individuals are wild-hatched and the rest are captive-reared. […]

How do I know if my glasses are plastic or glass? All you need to do is tap a lens against your teeth, a tool that’s always available. If the lenses make a soft ringing sound, they are more likely to be glass. If they make a soft *thunk*, then they are definitely plastic. Do […]

What is the function of laminar flow? Functions, Types, and Advantages of Laminar Flow Workstation. The flow of the body of air in a uniform direction and velocity is termed as laminar flow. Following this definition, a laminar flow workstation is a carefully designed station that has the ability to direct HEPA filtered air accurately. […]

What do all urban growth boundaries have in common? What do all urban growth boundaries have in common? Explain. All urban growth boundaries try to protect the spread of urban areas into rural areas. They all have one main goal which is to help preserve parts of the environment. How does living in a smart […]

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 is the oxidation number for CO in LiCoO2? +3 Which region of the periodic table shown here contains elements that are easiest to oxidize? b) Region D contains the least readily oxidized elements. Those elements lack one or two electrons to reach the electronic configuration of noble gases, so they want to accept new […]

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? Since there are 3 purple circles, we need 3 × 2 = 6 3 \times 2 = 6 3×2=6 green squares in order to balance the scale. What is a balance beam scale? A device for weighing. It has a balanced beam and two pans. […]