English
Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 7

Scientists use the Kelvin scale (K) as an alternative temperature scale to degrees Celsius (°C) by the relation T°C = (T + 273)K. Convert the following to Kelvin: −400°C - Mathematics

Advertisements
Advertisements

Question

Scientists use the Kelvin scale (K) as an alternative temperature scale to degrees Celsius (°C) by the relation T°C = (T + 273)K. Convert the following to Kelvin:

−400°C

Sum

Solution

−400°C = (−400 + 273)K

= −127K

shaalaa.com
Statement Problems on Integers Using All Fundamental Operations.
  Is there an error in this question or solution?
Chapter 1: Number System - Exercise 1.5 [Page 28]

APPEARS IN

Samacheer Kalvi Mathematics - Term 1 [English] Class 7 TN Board
Chapter 1 Number System
Exercise 1.5 | Q 3. (iii) | Page 28

RELATED QUESTIONS

Scientists use the Kelvin scale (K) as an alternative temperature scale to degrees Celsius (°C) by the relation T°C = (T + 273)K. Convert the following to Kelvin:

−275°C


A poet Tamizh Nambi lost 35 pages of his ‘lyrics’ when his file had got wet in the rain. Use integers, to determine the following.

If four pages contained 1800 characters, (letters) how many characters were lost?


Scientists use the Kelvin scale (K) as an alternative temperature scale to degrees Celsius (°C) by the relation T°C = (T + 273)K. Convert the following to Kelvin:

45°C


Find the amount that is left in the student’s bank account, if he has made the following transaction in a month. His initial balance is ₹ 690

(i) Deposit (+) of ₹ 485

(ii) Withdrawal (−) of ₹ 500

(iii) Withdrawal (−) of ₹ 350

(iv) Deposit (+) of ₹ 89

(v) If another ₹ 300 was withdrawn, what would the balance be?


A poet Tamizh Nambi lost 35 pages of his ‘lyrics’ when his file had got wet in the rain. Use integers, to determine the following:

Tamizh Nambi pays Kavimann ₹ 100 per page for his help. How much money does Kavimaan receive?


Kamatchi, a fruit vendor sells 30 apples and 50 pomegranates. If she makes a profit of ₹ 8 per apple and loss ₹ 5 per pomegranate. What will be her overall profit or loss?


Kalaivani had ₹ 5000 in her bank account on 01.01.2018. She deposited ₹ 2000 in January and withdrew ₹ 700 in February. What was Kalaivani’s bank balance on 01.04.2018, if she deposited ₹ 1000 and withdraw ₹ 500 in March?


The price of an item x increases by ₹ 10 every year and an item y decreases by ₹ 15 every year. If in 2018, the price of x is ₹ 50 and y is ₹ 90, then which item will be costlier in the year 2020.


Match the statements in Column A and Column B

S.No. Column A Column B
1. For any two integers 72 and 108, 72 + 108 is also an integer. (a) Distributive property of multiplication over addition.
2. For any three integers 68, 25 and 99
68 × (25 + 99) = (68 × 25) + (68 × 99)
(b) Multiplicative identity
3. 0 + (−138) = (−138) = (−138) + 0 (c) Commutative property under
4. For any two integers (−5) and 10
(−5) × 10 = 10 × (−5)
(d) Closed under addition.
5. 1 × (−1098) = (–1098) = (–1098) × 1 (e) Additive identity.

Kannan has a fruit shop. He sells 1 dozen bananas at a loss of ₹ 2 each because it may get rotten next day. What is his loss?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×