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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
What is time? 1. This is the question that each true scientist dreads to be asked especially in a public setting by extremely inquisitive young learners. We have learned to ca
What angle we take between magnetic field and plane of loop....discuss the cases when induced emf is zero in a rotating frame. Ans) We know that Magnetic Flux through a given area
Example of state function
a) A charge of 3X10 -4 Coulomb at P (1, 2, 3) and a charge of -10 -4 Coulomb at N (2, 0, 5) in a vacuum. We desire to measure the force exerted on second charge beacuse of firs
Are fibers safe? Fiber optics are passive components, hence do not use power to generate light, like the case with lamps. When light conductors only carry light from one point
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Which colour has got the minimum angle of deviation?
Physics assignment electron microscopy component, solve problem. can u solve these two problems with detailing and referencing if it needed
The matter consists of one or more basic substances called elements. An element is a substance whose all atoms are alike. Cohesion between atoms arises atoms because of interaction
Can two candles be taken as coherent sources? Explain how.
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