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TRUEFriction is the reason more force is needed to push an object across a rough surface.
isotopes
true
The modern periodic table arranges elements based on properties. These properties include valence electrons of the elements and density for example.
its atomic number There are there properties of an element to mass. The three properties are density, melting and electrical.
Abstract classes are to be extended until to a concrete class.
Can have both abstract & non abstract methods.
An Abstract class can not be instantiated.
A non abstract class can be extended to an abstract class.
If At least one abstract method present in a class then that class must be abstract.
abstract & final modifiers can never be together.
abstract classes can have both abstract methods & non abstract methods.
Mathematical Figures Are Universal &&;nd Can Be Understood By Other Scientists
periodic table
Thay collect data with a graph
experimentation or observation
:)
measurements should be made precisely to ensure accuracy (:
Resistance from air.
True
he was an old man in the 70's he had no life
