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A body of mass 2 kg thrown vertically upwards with a velocity 40 m/s comes to instantaneous rest at a height 50 m. Is there any other force (other than gravitational force), if yes then calculate the value. Ans) Yes , a force due to air drag will be there , to calculate this wehave to first find work done by air drag..Acc. To work-energy theoremWgravity + Wair drag = change in K.E.-Mgh +Wair drag = change in K.E.Wair drag =change in K.E. +mgh=[0-1/2mu2] +mgh = -1/2 x 2 x (40)2 + 2x 10 x 50 = -1600+1000 = -600Jnow w.d. = F x sF= -600/50 = -12N
Little Fish in Motion is Caught by Big Fish The animation below portrays the inelastic collision among a extremely massive fish and a less massive fish. Before the collision, t
help by post offoce box explan rasistance of a wire
In a Newton's ring set up, the gap between the glass plate and the lens is filled with a transparent liquid. If the liquid is replaced by a second liquid, the rings shrink. Which o
1. A protein with a density of 1.41 g/cm 3 has a molecular weight of 5000 g/mol. a. Calculate its radius. b. The radius measured during an experiment turned out to be 2.24
. Design a 32:1 multiplexer using two 16:1 multiplexers and one OR Gate.
Proton-neutron hypothesis
Low resistivity materials: The conducting materials having resistivity between 10 -8 to 10 -6 ohm-m come under this category and are used in house wiring, as conductors for powe
Explain, with the help of a circuit diagram, how the thickness of depletion layer in a p-n junction diode alters when it is forward biased. In the following circuits which one of t
What is Normal Force?? Force exerted upon an object that is in get in touch with another stable object. If a book is resting upon a surface, then the surface is exerting an up
Magnesium is the lightest of the structural metals. While this low density is an attractive property, magnesium also has a high corrosion rate that has often been seen as a disadv
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