Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 11-science Answered

a particle travels a distance of 20 metres in 7th seconds and 24 metres in 9 th seconds how much distance it should be travel in 15th second
 
 
First write formula
Asked by Sudhanshu Shridhar | 30 May, 2015, 04:20: AM
answered-by-expert Expert Answer
begin mathsize 12px style Let space straight u space abd space straight a space be space the space intial space veleocity space and space unifrom space acceleration space of space the space body. Distance space travelled space in space 7 th space seconds comma space straight D subscript 7 space equals 20 straight m Distance space travelled space in space 9 th space seconds comma space straight D subscript 9 space equals 24 straight m Formula space is space given space as comma straight D subscript straight n equals straight u plus straight a over 2 open parentheses 2 straight n minus 1 close parentheses therefore space straight D subscript 7 equals straight u plus straight a over 2 open parentheses 2 cross times 7 minus 1 close parentheses rightwards double arrow 20 equals straight u plus 13 over 2 straight a space space space space space space space space space space left parenthesis straight i right parenthesis straight D subscript 9 equals straight u plus straight a over 2 open parentheses 2 cross times 9 minus 1 close parentheses 24 equals straight u plus 17 over 2 straight a space space space space space space space space space left parenthesis ii right parenthesis Substracting space left parenthesis ii right parenthesis space from space left parenthesis straight i right parenthesis comma space we space get 4 equals 2 straight a therefore straight a equals 2 space straight m divided by straight s squared Substituting space in space eq left parenthesis straight i right parenthesis space we space get comma 20 equals straight u plus 13 over 2 cross times 2 equals straight u plus 13 plus straight u equals 20 minus 13 equals 7 space straight m divided by straight s squared straight D subscript 15 equals straight u plus straight a over 2 open parentheses 2 cross times 15 minus 1 close parentheses therefore 7 plus 2 over 2 cross times 29 equals 36 space straight m space Distance space travel space in space 15 th space second space is space 36 space straight m end style
Answered by Priyanka Kumbhar | 01 Jun, 2015, 09:34: AM

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 11-science - Physics
an ideal gas is enclosed in a cylinder at pressure 2 atm and temperature 300k the mean time between two successive collisions is 6×10–⁸s if the pressure is doubled and temperature is increased to 500k the mean time between two successive collisions will be close to
Asked by ifrayaseen31 | 28 Oct, 2023, 09:26: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
Dear experts, Kindly explain this question with a proper solution. Thank you.
question image
Asked by pratikshyadashrkl | 01 May, 2020, 10:24: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
Derive allotropic constant in terms of degree of freedom and hence find it's value for monotonic diatomic and polyatomic gases . 4. Derive the expression for mean free path for a gas .
Asked by karanchandra34 | 29 Jan, 2019, 11:10: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
Kinetic and calculus method
Asked by Madhurimaurya609 | 11 Jul, 2018, 08:14: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
Does the average K.E per module of the gas depend upon the mass of the molecule?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
What do you mean by the number of degrees of freedom of a dynamical system?  How many degrees of freedom are associated with (i)  a bob of an oscillating simple pendulum (ii)  an insect moving on a horizontal floor (iii)  a buzzing bee (iv)  a particle moving in a plane  
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
State the factors on which mean free path (λ) of a gas molecule depends.
Asked by Topperlearning User | 11 May, 2015, 01:59: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
What is meant by the term ' Molar specific heat ' of a gas?  The molar specific heat of hydrogen in the temperature range of about 250 K to 750 K is about (5/2) R.  At lower temperatures the value of molar specific heat of hydrogen decreases to the value typical of monoatomic gases (3/2) R while at higher temperatures, it tends to the value (7/2) R.  Explain.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
Find the average increase in kinetic energy of a molecule of gas per unit rise in temperature.
Asked by Topperlearning User | 11 May, 2015, 02:13: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
(a)  How many degrees of freedom are there due to vibration motion of diatomic gas molecules? (b)  How many degrees of freedom are there for monoatomic, diatomic and triatomic gas due to translational and rotational motion only?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×