The kinetic energy acquired by a mass m in traveling a certain distance d.starting from rest. under the action of a constant force is directly proportional to
Ratio of moment of inertia of two objects A and B is 2:3 which of the following is the ratio of torques of A and B respectively. If both are being rotated with constant angular acceleration
The cables holding a passenger lift swap and lift falls freely towards the ground. A person inside the lift is standing on a weighing machine. What does he notice?
The length breadth and thickness of a block are given by 1= 12 cm b= 6 cm and t= 2.45 cm.the volume of the block according to the idea of significant figures should be:
Electromagnetic waves from a source were found to be significantly diffracted when passing through gaps of the order of 10 m. What type of waves are they likely to be?
A body of mass M kg is lifted by a man to a height of one metre in 30 s. Another man lifts the same mass to the same height in 60 s.The work done by them is in ratio
Compound X & Y give effervesce with Na2CO3, solution. X gives a white ppt with ammonical AgNO3 while Y gives sweet smell compound on heating with alcohol X &Y are
A compound X has all of the properties below. It is a liquid at 25°C it mixes completely with water it reaets with aqueous sodium hydroxide, What could X be?
In many countries plastic waste is collected separetaly and sorted.Some of this is incinerated to provide heat for power stations. Why is pvc polyvinylchloride,removed from any waste that is to be incinerated?
The molecular mass of a polymer is obtained by multiplying mass of the monomer unit with the degree of polymerization, The degree of polymerization of PVC is 1000.What is molecular mass?
The decomposition of N2O4 to NO2 is carried out at 280°C in chloroform. When quilibrium is reached. 0.2 moles of N2O4 and 0.02 mole of NO2 are present in 1:1 ratio The equilibrium constant for the reaction N2O4------> 2NO2 is
Thick-walled dormant bodies formed during differentiation of vegetative cells that resist desiccation and can germinate under suitable conditions are called
John hogg separated blue green algae and bacteria (prokaryotes) form nucleated protists and placed them in a separate group called Monera, within the kingdom.
In Japanese art, profound emotion is frequently couched in images of nature, observed with ______ conditioned by life in a land of dramatic seasonal change, where perils of earthquake and typhoon make nature's bounty ______ and its processes awesome and beautiful
Many people mistakenly believe that the bodys nutritional requirements remain the same regardless of the quantity and form of other nutrients ingested physical activity and emotional state
Unlike Edgar Allan Poe whose works were ignored in his native country the works of Hawthorne were read and appreciated by the public and by contemporary critics
Primarily accomplished through the use of the electron microscope researchers have recently vastly increased their knowledge of the process of cell division
The accident victim was very grateful to the hospital that had saved his life but viewed his insurance company with suspicion out of fear that it will refuse to pay his claim and very expensive medical bills
