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# Tag Archives: Projectile motion

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How many time constant will be elapsed before the power delivered to the battery drops to half of its maximum value? Asked Mrityunjoy

Nucleus of an atom consists of neutral neutrons and positively charged protrons… then why do protons not attract neutrons and share charges with them? (+ve charges are supposed to attract neutral & -ve charges,aren’t they? and once they are in contact they share charges!) Asked sree

## How was your CBSE Class 12 Physics Exam 2013?

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## Previous Question Papers of NIOS Physics

NIOS April 2007 NIOS April 2008 NIOS April 2009 NIOS April 2010 NIOS April 2011 NIOS April 2012
View 312 – Physics – April 2007(3.19 MB)   View 312 – Physics – April 2008(335 KB)   View 312 – Physics – April 2009(246 KB)   View 312 – Physics – April 2010(164 KB)   View 312 – Physics – April 2011  View 312 – Physics – April 2012(175 KB)

## A Physics homework problem based on projectile motion and reaction time

A missile is launched and travels at 309m/s. If the operator discovers that the missile is locked on the wrong target and must be detonated by remote signal before impact, how far will the missile travel if the operator’s reaction time to send the signal is 1.21s? (Rwood Posted this) Answer will be posted soon. Waiting for response […]

## Homework from Projectile Motion

A projectile is projected at an angle theta with horizontal with speed u . If air resistance is taken in account , the angle with vertical at the time of hitting the ground will be a)more than (90 + theta) b)less than (90 – theta) c)(90 + theta) d)equal to theta Answer: (b) Se the figure below […]