Last updated at Feb. 13, 2019 by Teachoo

Transcript

Ex 1.3, 6 A certain freezing process requires that room temperature be lowered from 40 C at the rate of 5 C every hour. What will be the room temperature 10 hours after the process begins? Initial temperature = 40 C Room temperature decreases at 5 C per hour Temperature change in 1 hour = 5 C Temperature change in 10 hours = 5 10 C = 50 C Room temperature after 10 hours = Initial temperature + Temperature change in 10 hour = 40 + ( 50) = 40 50 = ( 40 + 50) = (50 40) = 10 C Room temperature after 10 hours = 10 C

Ex 1.3

Ex 1.3, 1
Important

Ex 1.3, 2 (a) Important

Ex 1.3, 2 (b)

Ex 1.3, 3 (i)

Ex 1.3, 3 (ii)

Ex 1.3, 4

Ex 1.3, 5 (a) Important

Ex 1.3, 5 (b)

Ex 1.3, 5 (c)

Ex 1.3, 5 (d)

Ex 1.3, 5 (e)

Ex 1.3, 5 (f)

Ex 1.3, 5 (g)

Ex 1.3, 5 (h)

Ex 1.3, 6 Important You are here

Ex 1.3, 7 Important

Ex 1.3, 8 Important

Ex 1.3, 9

About the Author

Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.