Explanation

• The Crude Birth Rate (CBR) is the number of live births per 1,000 people in a population in one year.
• It is calculated by dividing the total live births during a year by the mid-year population and multiplying by 1,000.
• It is commonly used to measure population growth and compare birth levels between countries.

Last verified on 12-11-2026

Explanation

Explanation

• Human Geography studies people and their activities across the Earth's surface.
• It examines population, settlements, migration and economic activities.
• It also explains how humans interact with their natural environment.

Last verified on 12-11-2026

Explanation

• The unit of specific heat capacity is Joules per kilogram per Kelvin (J/(kg·K)) or Joules per kilogram per Celsius (J/(kg·°C))
• It can also be expressed as J⋅kg−1⋅K−1 or J⋅kg−1⋅°C−1. 

Additional information:

• Joules (J): Represents the unit of energy.
• Kilograms (kg): Represent the unit of mass.
• Kelvin (K) or Celsius (°C): Represents the unit of temperature change.
• Therefore, specific heat capacity indicates the amount of energy (in Joules)
• Required to raise the temperature of one kilogram of a substance by one Kelvin (or one degree Celsius).

Last verified on 11-11-2026

Explanation

The SI unit of momentum is kg·m/s (or N·s). In brief:

• Definition: Momentum is the product of mass and velocity (p = mv).
• Formula: p = mv
• Vector: has magnitude and direction
• Conservation: constant in closed systems
• No named unit
• Measured in kilograms (kg) and velocity in meters per second (m/s). 
• The dimensional formula of momentum is:[M L T⁻¹]
• Momentum is the product of an object’s mass and its velocity → Momentum = Mass × Velocity.
• It is a vector quantity.