Mechanics (Part –1)

• One mole is equal to approximately 6.022 x 10²³ units (atoms, molecules, ions, etc.) of a substance, a number known as Avogadro's number.
• The mass is grams of one mole of substances is equal to the mass number in AMU (Atomic Mass Unit) of one atom/molecule of that substance.

• One mole is equal to approximately 6.022 x 10²³ units (atoms, molecules, ions, etc.) of a substance, a number known as Avogadro's number.
• The mass is grams of one mole of substances is equal to the mass number in AMU (Atomic Mass Unit) of one atom/molecule of that substance.

• One mole is equal to approximately 6.022 x 10²³ units (atoms, molecules, ions, etc.) of a substance, a number known as Avogadro's number.
• The mass is grams of one mole of substances is equal to the mass number in AMU (Atomic Mass Unit) of one atom/molecule of that substance.

Cubic meter or m³ is the unit of volume.

Impulse Force x Time (MLT⁻²)(T)=MLT⁻¹

Whereas

Momentum= mass x velocity

MLT⁻¹ = MLT⁻¹

So it is clear that the dimensions of impulse and linear momentum are same.

List of Basic SI Units

Time is a fundamental quantity. Time is a scalar quantity.

List of Basic SI Units

• Momentum Defined: Momentum is the product of an object's mass (m) and its velocity (v): p = m v. 
• SI Units:
  • Mass (m) is measured in kilograms (kg). 
  • Velocity (v) is measured in meters per second (m/s). 
• Therefore: The SI unit of momentum is kg (m/s) = kg·m/s. 

A kilowatt-hour (kWh) represents the amount of energy used by a device consuming one kilowatt (1,000 watts) of power for one hour.