State And Explain Hubbles Law?
Hubble’s law states that the distance to a galaxy is proportional to its recession velocity. Mathematically, this can be stated... View Article
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Why Does One Get Hurt On Jumping From A Great Height To The Floor?
Jumping from greater height means that you achieve higher velocity before landing, hence there is a larger downward momentum at... View Article
Why do roads on mountains have inward inclination at sharp turns?
When a vehicle moves along a horizontal curved road on a mountain, the necessary centripetal force is supplied by the... View Article
Action And Reaction Forces Do Not Balance Each Other. Why?
Newton’s third law of motion states that every action has an equal and opposite reaction. This indicates that forces always... View Article
A Force Is Always Required To Move A Body Uniformly. Comment.?
A continuous supply of force is needed to keep a body in uniform motion because when a constant force is... View Article
What Are The Properties Of Magnetism?
Magnets exhibit the following properties: All magnets have two poles: the North Pole and the South Pole Magnets attract ferromagnetic... View Article
If The Net Force Acting On A Body Be Zero, Then Will The Body Remain Necessarily In Rest Position?
Answer: No, if the net force acting on a body be zero, then the body won’t necessarily be in the... View Article
Why Frictional Force Gets Increased When Two Surfaces In Contact Are Polished Beyond A Certain Limit?
When two surfaces in contact are polished beyond a certain limit and made extremely smooth, they come in intimate contact... View Article
Automobile Tyres Are Generally Provided With Irregular Projections Over Their Surfaces, Why?
The automobile tyres have irregular projections over their surface due to the following reasons: To increase the friction Increase the... View Article
What is the source of centripetal force, when an electron revolves around the nucleus?
Answer: The charge of the nucleus is positive and the charge of the electron is negative. There exists an electrostatic... View Article
Why does a cyclist lean to one side, while going along a curve? In what direction does he lean?
Answer: The cyclist bends slightly inwards while going on a curved road because by doing that the cyclist is generating... View Article
What Are The Characteristics Of Coulombian Force?
Following are the characteristics of Colombian Force: The force may either be attractive or repulsive depending on the nature of... View Article
What Is Rectilinear Motion Example?
Any motion in which objects take a straight path is known as a rectilinear motion. Following are the many examples of... View Article
What Is Series Resonance Circuit?
In RLC series circuit, when the circuit current is in phase with the voltage, the circuit is said to be... View Article
What Is Time According To Physics?
Time in physics is defined as the progression of events from the past to the present into the future. Basically,... View Article
What Are The Various Evidences In Favour Of Evolution?
Following are the various pieces of evidence in favour of evolution: Analogous Organs Organs that have different basic structures but... View Article
What Is The Difference Between Mole And Molecule?
Mole and molecule are two distinct terms used in chemistry. These terms have a large difference and are vital components... View Article
What Is The Principle Of DC Generator?
The main function of DC generators is to change mechanical energy into electricity. DC’s generators produce electrical power based on... View Article
What Is Light Reflection And Refraction?
Reflection takes place when light bounces off objects. Different surfaces reflect light in different ways. We learned earlier that non-luminous... View Article
Does Acid Corrode Metal?
The acid has reacted with the iron in the nail and has started to eat it away. The nail has... View Article
