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Given, distance x = ( t + 5)-1   ...... (i)Differentiating eq. (i) w.r.t, we get 
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Hari Singh’s reactions to the prospect of receiving an education change over time. He wanted to learn to write so that he could become proficient in trick
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Find CBSE, ICSE State Boards Textbook Solutions of Class 8 to 12 of all subjects. Read NCERT Textbooks Questions and Answers & Find Previous year solved papers.
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(i) ∵ Ending digit = 4 and 42 = 16
∴ (1234) will have 6 as the one’s digit.
(ii) ∵ Ending digit is 7 and 72 = 49
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Radius of nth orbit is given by, r = n2h24π2mKZe2   i.e.,   r ∝ n2Z For hydrogen,  Z
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When chlorine gas reacts with hot and concentrated NaOH solution, it disproportionates into Chloride (Cl-) and Chlorate (ClO3-) ions. 
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Solution :given that, pressure of CO2=2.5atm1 atm = 1.01325x 105 pa  so that pressure of CO2 = 2.5x1.01325x105pa   = 2.533125 x 10
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Let us consider a gas enclosed in a cylinder fitted with a frictionless piston having an area of cross-section equal to ‘a’. Let the gas expand against the external pressure P facing the piston to move through a small distance d. Then work of expansion is given by,





During expansion, work is done by the system and ∆V(V2 – V1) is positive. Therefore, in order to satisfy the sign conventions, a negative sign is put in the expression for work.



During compression, Work is done on the system. ∆V(V2 – V1) for compression is negative. Therefore work, as obtained from the abov

The Rikli and Jones Senior Citizen Fitness Test for assessing the functional fitness of older adults describe easy to understand and effective tests to measure aerobic fitness, strength and flexibility using the minimal and inexpensive equipment. The Individual fitness test items involve common activities such as getting up from a chair, walking, lifting, bending and stretching.The tests were developed to be safe and enjoyable for older adults while still meeting scientific standards for reliability and validity.The tests are :
Chair Stand Test - testing lower body strength
Arm Curl Test -