Category: Physics

Why water has high boiling point and freezing point? So despite its small molecular weight, water has an incredibly big boiling point. This is because water requires more energy to break its hydrogen bonds before it can then begin to boil. The same concept is applied to freezing point as well, as seen in the […]

What is the biggest star? UY Scuti How is a star born step by step? Stage 1- Stars are born in a region of high density Nebula, and condenses into a huge globule of gas and dust and contracts under its own gravity. This image shows the Orion Nebula or M42 . Stage 2 – […]

How do you solve chain rule problems? Solution: To use the chain rule for this problem, we need to use the fact that the derivative of ln(z) is 1/z. Then, by the chain rule, the derivative of g is g′(x)=ddxln(x2+1)=1×2+1(2x)=2xx2+1. Where do we apply chain rule? The chain rule can be applied to composites of […]

Is the stuff inside glow sticks toxic? The ingredients in glow sticks are generally non-toxic, and most cases will not require medical attention. However, if glow stick fluid is swallowed, it may cause an upset stomach and some mouth irritation. Can Glow sticks make you blind? If glow stick liquid is squirted into the eyes, […]

What is the importance of amendments? It is based on the verb to amend, which means to change for better. Amendments can add, remove, or update parts of these agreements. They are often used when it is better to change the document than to write a new one. What is the purpose of amendments? The […]

How do you calculate energy requirement? To calculate the energy required to raise the temperature of any given substance, here’s what you require: The mass of the material, m. The temperature change that occurs, ΔT. The specific heat capacity of the material, c (which you can look up). Here is a source of values of […]

What do you mean by internal forces? Internal forces are forces exchanged by the objects in the system. Internal forces may cause acceleration in different parts of the system but does not cause any acceleration in the center of mass of the entire system. Example: Friction is an external force if the body experiencing friction […]

Does material affect friction? The frictional force does not depend on mass or surface area. All that really matters is the types of materials that are in contact. When everything is stationary, the objects feel static friction. When they are moving, kinetic friction takes over. What 2 factors do not affect friction? Friction does not […]

How do scientists study landslides? To be able to predict landslides, scientists have developed slope stability models to analyze the risk locally. More recently, NASA has created a preliminary algorithm to map landslide hazards globally using satellite measurements of rainfall, land cover and other surface variables. What do you think is the best way to […]

What are the 10 steps of the design process? The 10 Steps to Design Thinking Identify needs. This is the most critical and most difficult step. Gather information. This is the research phase. Stakeholder analysis. Operational research. Hazard analysis. Specification creation. Creative design. Conceptual design. What is the first step in design process? Discovery is […]