Explanation

Speed is defined as.

The rate of change of position of an object in any direction.

Speed is measured as the ratio of distance to the time in which the distance was covered

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RY 13-01-2023

Explanation

Volvox is a motile green algal colony. 

These colonies are called coenobium.

AGM 25-12-2022

Explanation

Electric Field Intensity is a vector quantity, denoted by 'E'. Formula: Electric Field = F/q. Unit of E is NC-1.

AGM 25-12-2022

Explanation

Californium-252 Isotope is used to measure the moisture content of soil in road construction and in buildings.

Californium-252

آاسوٹوپ کا استعمال سڑک کی تعمیر اور عمارتوں میں مٹی کی نمی کی پیمائش کے لیے کیا جاتا ہے۔

Explanation

InCorrect the sentence: We often walk across the fields

correct sentence:  We often walk over the fields

Explanation

 Electric lines of force are always diverging from positive charge and they converge at a negative charge.

Explanation

The fundamental units in the SI (International System of Units) are:

1. The meter (m) for length,
2. The kilogram (kg) for mass,
3. The second (s) for time,
4. The ampere (A) for electric current,
5. The kelvin (K) for thermodynamic temperature,
6. The mole (mol) for the amount of substance, 
7. The candela (cd) for luminous intensity.

These seven base units are independent and form the foundation of the SI system, from which all other units are derived.