true or false:- 1. Friction is less for smooth surfaces. 2. At least Two objects must interact for a force to come into play. 3. cells locking nuclear membrane are called eukaryotic cells. 5. A fuel with high calorific value is called an ideal fuel.
Answers
Answer:
1. True
2. True
3. True
5. True
Explanation:
1.Friction is Opposed a force or Resistance so if a surface is smooth it has low friction
2. Force is Push or pull. F= PA it means force is equal to Pressure× Area
3. In eukaryotes, however, the DNA takes the form of compact chromosomes separated from the rest of the cell by a nuclear membrane (also called a nuclear envelope). Eukaryotic cells also contain a variety of structures and organelles not present in prokaryotic cells.
5. A good fuel should have high calorific value. That means it should produce large amount , of heat per unit mass.. which is the amount of heat energy produced on complete combustion of 1 kg of a fuel. The calorific value of a fuel is expressed in kJ/kg. A good fuel should have high calorific value