Explanation

• The SI unit of force is the newton (N).
• 1 N = the force needed to accelerate 1 kg of mass by 1 m/s²
• Derived unit: N = kg·m/s²
• Named after Sir Isaac Newton
• Based on F = ma (Newton's second law)

The base units relevant to force are:

1. The metre, unit of length — symbol m
2. The kilogram, unit of mass — symbol kg
3. The second, unit of time — symbol s

Explanation

A kilowatt hour (kWh) measures the amount of energy consumed when 1 kilowatt of power is used for 1 hour.

It is a unit of electrical energy.

Kilowatt hour is the unit of ENERGY.

Watt or Kilowatt is the unit of POWER.

Explanation

Unit of torque: newton metre (N m)

Explanation

The SI unit of radioactivity is becquerel (Bq).

Curie is a non-SI unit, with 1 curie equal to 37 billion Bq.

Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration)

It is the process by which an unstable atomic nucleus loses energy by radiation.

Three of the most common types of decay are:

• Alpha
• Beta
• Gamma decay

Explanation

Based on the search results, Velocity is not a unit.

It is a physical quantity, specifically a vector quantity, that measures the rate of displacement. 

Meter (m): This is the SI unit of length

Time: This is a fundamental physical quantity, and its SI unit is the second (s).

Kilogram (kg): This is the SI unit of mass. 

Explanation

The SI unit of acceleration is meters/second^2 (m/s^2 or ms^-2)

Acceleration (a) is defined as the rate of change of velocity.

Velocity is a vector quantity, and therefore acceleration is also a vector quantity.

Explanation

The centimeter (cm) is a metric unit of length or distance. 

It is equal to 0.01 meters.

Explanation

The quantity with the same unit as pressure x volume (PV) is work. 

Pressure (P) is measured in Pascals (Pa)

Volume (V) is measured in cubic meters (m^3)

When multiplied, these units give Joules (J), which is the unit of work

Therefore, PV represents work done or energy. 

In the ideal gas law (PV = nRT), the product PV represents the work done by or on a gas. 

This relationship is also seen in the formula for work: W = F * d, where F is force and d is distance.

Since pressure is force per unit area (P = F/A), PV can be considered equivalent to force times distance. 

Explanation

Pascal (Pa) is defined as 1 Newton per square meter (N/m²).

It measures the amount of force applied over a unit area.

Explanation

Pressure is typically measured in units of force per unit area.

In the Imperial system, pressure is commonly measured in Pounds per Square Inch (PSI).

This is a widely used unit of pressure in engineering, physics, and many other fields.

Other common units of pressure include:

• Atmospheres (atm)
• Bars
• Pascals (Pa)
• Torr