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Kerala - XI Science - Physics
When a body slides down from rest along a smooth inclined plane of angle 45degree with horizontal , it takes T time. When same body slides down a rough inclined plane making same angle & through same distance, It is seens to be taken pT, where p is some number greater than 1. Calculate the coefficient of friction between body and rough plane.
Asked by Jojo
6th March 2016,
9:04 PM
Kerala - XI Science - Maths
Find 3nP4=5(n-1)P4 , for n>4 ? (From 7th chapter permutations and combinations.)
Asked by antonyjojy999
15th January 2016,
7:11 PM
Kerala - XI Science - Physics - Work, Energy and Power
Sir, can you give me a detailed note on spring force?
Asked by kpshabnam
16th October 2015,
9:34 PM
Kerala - XI Science - Physics
A ball rolls off the edge of a 1.0m high table with a speed of 4.0m/s.How far horizontally from the edge of the table does the ball strike the floor?
Asked by mythili Suresh
26th September 2015,
10:22 AM
Kerala - XI Science - Physics - Motion in a Plane
From the top of a cliff a ball is projected with a velocity of 24 m/s in a horizontal direction.At this instant a car at rest at a location 90m from the clif accelerates from rest at a constant acceleration of 4.0m/s^(2) toward the cliff.the ball hits the car.
(a)How long is the rock in the air?
(b)How high is the cliff?
Asked by mythili Suresh
26th September 2015,
10:14 AM
Kerala - XI Science - Physics - Work, Energy and Power
An engine pumps out water continuosly through a hose with a velocity v ,If miss the mass/unit length of water jet the rate at which K.E imparted is...?
A)1/2(mv^2)
B)1/2(mv^3)
Asked by mythili Suresh
21st September 2015,
1:51 PM
Kerala - XI Science - Maths - Sequences and Series
If the sum of a certain no. of terms of the A.P. 25,22,19,...is 116.Find the last term.
Asked by mythili Suresh
2nd September 2015,
8:14 PM
Kerala - XI Science - Physics - Kinetic Theory
A stone is stopped from a height 'h' ,it hits the ground with a certain momentum p.If the samestoneis dropped from a height 100% more than the previous height,the momentum when it hits the groun will change by ............?
Asked by mythili Suresh
1st September 2015,
9:37 PM
Kerala - XI Science - Physics - Motion in a Plane
So when the body moves up, acceleration= -g and the graph looks like what was drawn before for a decelerating body. Then when the body is moving downwards, acceleration= +g , now why does this graph have a curve similar to a decelerating body? Shouldn't the curve of this graph be in the opposite direction? How can I insert images here? It will be much easier to explain the question if I can upload images.
Asked by Deebu
20th March 2015,
1:36 PM
Kerala - XI Science - Physics - Motion in a Plane
So if the shape is similar to that seen in an upwardly projected body doesn't it mean that the body is decelerating as it moves up and then continues to decelerate as it reaches maximum height and come back down? When a body is projected vertically upwards it is undergoing negative acceleration,right? After reaching maximum height when the object starts moving down is it still undergoing negative acceleration? Please explain.
Asked by Deebu
19th March 2015,
1:32 AM
