मराठी
तामिळनाडू बोर्ड ऑफ सेकेंडरी एज्युकेशनएस.एस.एल.सी. (इंग्रजी माध्यम) इयत्ता ७

An atom can contain protons which have a positive charge (+) and electrons which have a negative charge (−). When an electron and a proton pair up, they become neutral (0) and cancel the char

Advertisements
Advertisements

प्रश्न

An atom can contain protons which have a positive charge (+) and electrons which have a negative charge (−). When an electron and a proton pair up, they become neutral (0) and cancel the charge at. Now determine the net charge:

7 protons and 6 electrons →

बेरीज
Advertisements

उत्तर

7 protons and 6 electrons → (+7) + (−6)

= +1

= 1 proton ⊕

shaalaa.com
Statement Problems on Integers Using All Fundamental Operations.
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 1: Number System - Exercise 1.5 [पृष्ठ २८]

APPEARS IN

सामाचीर कलवी Mathematics - Term 1 [English] Class 7 TN Board
पाठ 1 Number System
Exercise 1.5 | Q 2. (v) | पृष्ठ २८

संबंधित प्रश्‍न

One night in Kashmir, the temperature is −5°C. Next day the temperature is 9°C. What is the increase in temperature?


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?


An atom can contain protons which have a positive charge (+) and electrons which have a negative charge (−). When an electron and a proton pair up, they become neutral (0) and cancel the charge at. Now determine the net charge:

9 protons and 12 electrons →


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 Tamizh Nambi is paid ₹ 250 for each page produced, how much money did he lose?


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 Kavimaan helps Tamizh Nambi and they are able to produce 7 pages per day, how many days will it take to recreate the work lost?


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?


During a drought, the water level in a dam fell 3 inches per week for 6 consecutive weeks. What was the change in the water level in the dam at the end of this period?


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?


A submarine was situated at 650 feet below the sea level. If it descends 200 feet, what is its new position?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×