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Posted by Syeda Aisha 6 years, 3 months ago
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Yogita Ingle 6 years, 3 months ago
Let the initial mass of the body be m and its velocity be v.
Initial momentum of the body = mv
Initial KE = mv^2/2
If the momentum increases by 10%, new momentum = mv + 10% of mv
= mv + 10/100mv
= mv + mv/10
=11mv/10
=m(11v/10)
New velocity = 11v/10
Increase in velocity = v/10
New KE = m(11v/10)^2/2
= 121/100mv^2/2
Increase in KE = 21%
Posted by Anshul Sharma 6 years, 3 months ago
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Gaurav Seth 6 years, 3 months ago
Ans:
(n+1)! / r! ( n-r+1)!
To prove
n! / r!(n-r)! + n! / (r-1)! (n-r+1)! = (n+1)! / r!(n-r+1)!
L.H.S
n! / (r)(r-1)! (n-r)! +n! / (r-1)! (n-r+1)(n-r)!
n! / (r-1)! (n-r)! will be common
so,
n! / (r-1)! (n-r)! *[ 1/r + 1/(n-r+1) ]
n! / (r-1)! (n-r)! *[ n-r+1+r / nr-r2 +r ]
we will get ,
n! / (r-1)! (n-r)! / * [n+1 / r(n-r+1)]
(n!) (n+1) / (r-1)! (r) (n-r)! (n-r+1)
(n+1)! / r! ( n-r+1)!
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Sia ? 6 years, 3 months ago
Doping' refers to an athlete's use of prohibited drugs or methods to improve training and sporting results. Steroids are the drugs that often come to mind when we talk about doping, but doping also includes an athlete's use of other forbidden drugs (such as stimulants, hormones, diuretics, narcotics and marijuana), use of forbidden methods(such as blood transfusions or gene doping), and even the refusal to take a drug test or an attempt to tamper with doping controls.
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Gaurav Seth 6 years, 3 months ago
Because in closed vessel the amount of liquid is constant i.e the water which is converted into vapour again condense to form water and boiling occurs when vapour pressure is equal to atmospheric pressure since it is closed so they couldn't be equal
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Harsh Mishra 6 years, 3 months ago
As mole is itself a unit of Amount of Substance denoted by mol. It is one of the Seven basics unit of S.I. System!!!!
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Ramesh Chand 6 years, 3 months ago
1Thank You