Explanation

The SI unit of power is the watt (W). 

Explanation: A watt is equal to one joule of work done per second. 

Key points:

Symbol: W

Definition: 1 watt = 1 joule per second

Named after: James Watt 

Explanation

The SI unit of volume is the cubic meter (m3), which is a derived unit.

1 m3 = 1 m • 1 m • 1 m.

***

The SI unit of energy/work is the joule (J)

Explanation

Svedberg (Sv):

A unit measuring the sedimentation coefficient (how fast particles settle in a centrifuge).

Used in ultracentrifugation to study macromolecules (e.g., proteins, ribosomes).

1 Sv = 10⁻¹³ seconds.

Explanation

Wavelength is a measure of distance between two wave crests or troughs.

The SI unit for measuring distance is the meter (m), hence it is used for wavelength.

It is typically denoted by the symbol λ (lambda).

Explanation

InCorrect the sentence: We often walk across the fields

correct sentence:  We often walk over the fields

Explanation

The fundamental units in the SI (International System of Units) are:

1. The meter (m) for length,
2. The kilogram (kg) for mass,
3. The second (s) for time,
4. The ampere (A) for electric current,
5. The kelvin (K) for thermodynamic temperature,
6. The mole (mol) for the amount of substance, 
7. The candela (cd) for luminous intensity.

These seven base units are independent and form the foundation of the SI system, from which all other units are derived. 

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

Energy density is defined as energy per unit volume, so the SI unit is joules per cubic meter (J/m³).

It applies to electric fields where

𝑢 = 1/2𝜀𝐸², with 𝑢 being energy density.

Explanation

Electric field intensity is defined as force per unit charge (N/C) or potential difference per unit distance (V/m).

So, V/m is an equivalent.

It is commonly used unit for electric field intensity.

Explanation

The bar is a metric unit of pressure, but not part of the International System of Units (SI).

Bar is defined as 100,000 Pa (100 kPa)