All-in-One Exam Prep Platform

Explanation

A power level of 1 hp is approximately equivalent to 746 watts (W) or 0.746 kilowatts (kW).

Explanation

The ampere, symbol A, is the SI unit of electric current.

It is defined by considering the fixed  value of the elementary charge e as 1.602 176 634 x 1019,

where the unit C is equal to As and the second is defined by Δν Cs.

Explanation

Light Year is the distance that light can travel in one year.

The distance light travels in one year is known as light year.

Explanation

The hertz is the unit of frequency of one cycle per second. 

 symbol: hertz (Hz)

Hertz in honor of the German physicist Heinrich Hertz

hertz in the International System of Units (SI)

frequency is defined as one cycle per second

***

Explanation

The SI unit of force is the Newton, symbol N.

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

The coulomb, also written as its abbreviation 'C', is the SI unit for electric charge.

One coulomb is equal to the amount of charge from a current of one ampere flowing for one second.

One coulomb is equal to the charge on 6.241 x 1018 protons.

***

Explanation

The SI unit of pressure is Pascal (represented as Pa) 

in SI base units, one kilogram per meter per second squared (N/m2 or kg m-1s-2)

Definition of Pressure: Pressure can be defined as the force acting per unit area.

***

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

ND23-9-2023

Explanation

The SI unit of electric charge is the coulomb, represented by the symbol C.

One coulomb is the amount of charge that passes through a conductor carrying one ampere of current for one second.

It's also equal to the charge of about 6.24 quintillion electrons or protons.

Explanation

Joule is a unit of work or energy or heat.

Joule is a scalar quantity.

Explanation

The power of the lens is the reciprocal of focal length.

The SI unit is dioptre.

Dioptre (D)

Power of lens = 1/ focal length in meter.