## The Calculator Encyclopedia Computes the Significant Figures of a Number

According to Wikipedia,

The significant figures (also known as the significant digits) of a number are digits that carry meaning contributing to its measurement resolution. This includes all digits except:

• All leading zeros;
• Trailing zeros when they are merely placeholders to indicate the scale of the number (exact rules are explained at identifying significant figures); and
• Spurious digits introduced, for example, by calculations carried out to greater precision than that of the original data, or measurements reported to a greater precision than the equipment supports.

Nickzom Calculator computes the significant figures of any given number.

For Example: apply 3 significant figures to 123876  and apply 2 significant figures to 0.00009872.

First, you need to obtain the Nickzom Calculator – The Calculator Encyclopedia app.
You can get this app via any of these means:

Once, you have obtained the calculator encyclopedia app, proceed to the Calculator Map, then click on Significant Figures under the Mathematics section

On clicking the page or activity to enter the values is displayed.

From the first example: apply 3 significant figures to 123876
It implies that the number is 123876 and the number of significant figures to apply is 3.

## The Calculator Encyclopedia Calculates the Hydraulic Mean Depth or Hydraulic Radius of Flow in Open Channels | Fluid Mechanics

Hydraulic mean depth or hydraulic radius can be defined as the cross-sectional area of flow divided by wetted perimeter.

Wetted perimeter is the perimeter of the cross sectional area that is “wet”.
Hydraulic mean depth or hydraulic radius is a very important parameter in flow in open channels and fluid mechanics calculations.

The formula for computing hydraulic mean depth or hydraulic radius is:

R = A / P

Where:
R = Hydraulic Depth
A = Cross-sectional Area of Flow
P =  Wetted Perimeter

For Example:

Find the hydraulic mean depth or hydraulic radius of flow in an open channel where the cross-sectional area is 150 m2 and the wetted perimeter is 100 m.

From the example we can see that the cross-sectional area is 150 m2 and the wetted perimeter is 100 m.

R = 150 / 100
R = 1.5

Therefore, the hydraulic mean depth or hydraulic radius is 1.5 m.

Now, I would love to show you how to use Nickzom Calculator The Calculator Encyclopedia to get answers for your questions on hydraulic mean depth or hydraulic radius.

## Nickzom Calculator Calculates the Hydraulic Depth of Flow in Open Channels | Fluid Mechanics

Hydraulic depth can be defined as the cross-sectional area of flow divided by the top width of surface.

Hydraulic depth is a very crucial parameter in calculations dealing with fluid mechanics and flow in open channels.

The formula for computing hydraulic depth is:

R = A / T

Where:
R = Hydraulic Depth
A = Cross-sectional Area of Flow
T =  Top Width or Top Surface Water Width

For Example:

Find the hydraulic depth of flow in an open channel where the cross-sectional area is 120 m2 and the top width is 12 m.

From the example we can see that the cross-sectional area is 120 m2 and the top width is 12 m.

R = 120 / 12
R = 10

Therefore, the hydraulic depth is 10 m.

Now, I would love to show you how to use Nickzom Calculator The Calculator Encyclopedia to get answers for your questions on hydraulic depth.

## The Calculator Encyclopedia Calculates and Solves the Wavelength for a Wave – Particle Behaviour

According to Wikipedia,

Wave–particle duality is the concept in quantum mechanics that every particle or quantum entity may be partly described in terms not only of particles, but also of waves.

In physics, the wavelength is the spatial period of a periodic wave—the distance over which the wave’s shape repeats.

Nickzom Calculator requires two parameters to compute the wavelength of a wave or particle. These parameters are:

• Mass
• Velocity

The formula for computing the wavelength is:

λ = h / mv

Where:
λ = Wavelength
h = Planck’s Constant (6.63 x 10-34 js)
m = Mass
v = Velocity

Let’s solve an example, find the wavelength of a wave – particle with a mass of 300 Kg and a velocity of 3 x 1010 m/s.

From the example, we can see that:
m = 300
v = 3 x 1010

λ = 6.63 x 10-34 / 300 (3 x 1010)
λ = 6.63 x 10-34 / 9 x 1012
λ = 7.37 x 10-47

Therefore, the wavelength of the wave – particle (λ) is 7.37 x 10-47.

## Nickzom Calculator Calculates and Solves for Polynomials | Cubic and Quartic

According to Wikipedia,

In mathematics, a polynomial is an expression consisting of variables (also called indeterminates) and coefficients, that involves only the operations of additionsubtractionmultiplication, and non-negative integer exponents of variables.

Nickzom Calculator is the very first calculator encyclopedia to come out from Nigeria. It is capable of solving over 50,000 calculations and presenting the steps (workings). Fortunately, Nickzom Calculator can compute conception and best intercourse dates.

You can access Nickzom Calculator via any of these means:
Web – https://www.nickzom.org/calculator-plus
Android (Paid) – https://play.google.com/store/apps/details?id=org.nickzom.nickzomcalculator
Android (Free) – https://play.google.com/store/apps/details?id=com.nickzom.nickzomcalculator
Apple (Paid) – https://itunes.apple.com/us/app/nickzom-calculator/id1331162702?mt=8

Once, you have access to Nickzom Calculator proceed to the Calculator Map, click on Polynomials under Mathematics section

For Nickzom Calculator, there are two polynomials which are cubic and quartic.

A cubic equation or polynomial has a degree or order of 3 whereas a quartic equation or polynomial has a degree or order of 4.

Let’s start with a cubic equation

## How to Calculate the Resultant of Two Vectors (Physics)

According to Math Warehouse,

The resultant vector is the vector that ‘results’ from adding two or more vectors together.

The formula for calculating the resultant of two vectors is:

R = √[P2 + Q2 + 2PQcosθ]

Where:
R = Resultant of the Two Vectors
P = Magnitude of the First Vector
Q = Magnitude of the Second Vector
θ = Inclination Angle between the Two Vectors

Let’s solve an example, find the resultant of two vectors where the first vector has a magnitude of 30 and the second vector has a magnitude of 40 with 50° has the inclination between the two vectors.

From the example above, we can see that P is 30, Q is 40 and θ is 50. Now, inserting these values into the formula we compute for the resultant of the two vectors.

R = √[(30)² + (40)² + 2(30)(40) . cos50°]
R = √[900 + 1600 + 2(1200) . (0.6427876096865394)]
R = √[900 + 1600 + 2400(0.6427876096865394)]
R = √[900 + 1600 + 1542.6902632476945]
R = √[4042.6902632476945]
R = 63.58215365373915

Therefore, the resultant of the two vectors is 63.58215365373915.

To be able to get the resultant of two vectors using Nickzom Calculator. You need to know the magnitude of the two vectors and the inclination between the two vectors.

## Nickzom Calculator Calculates Conception and Best Intercourse Dates

According to Wikipedia,

Conception, the beginning of pregnancy involving fertilisation (the fusion of gametes to produce an embryo) and implantation of the embryo onto the uterine wall.

Nickzom Calculator is capable of informing you on the conception date of your baby, due date of the baby and the most probable and possible conception. There are two major parameters that needs to be provided to obtain the required information.

• First Day of Your Last Period
• Average Length of Cycles

Nickzom Calculator provides 6 subsequent cycle dates on the following dates:

• Most Probable Conception Dates
• Best Intercourse Days
• Possible Conception Days
• Estimated Due Date

Nickzom Calculator is the very first calculator encyclopedia to come out from Nigeria. It is capable of solving over 50,000 calculations and presenting the steps (workings). Fortunately, Nickzom Calculator can compute conception and best intercourse dates.

## Nickzom Calculator Calculates Basal Metabolic Rate

According to Wikipedia,

Basal Metabolic Rate is a variant of standard metabolic rate measurement that excludes the temperature data, a practice that has led to problems in defining “standard” rates of metabolism for many mammals.

Basal Metabolic Rate is the rate of energy expenditure per unit time by endothermic animals at rest. It is reported in energy units per unit time ranging from watt (joule/second) to ml O2/min or joule per hour per kg body mass J/(h·kg). Proper measurement requires a strict set of criteria be met. These criteria include being in a physically and psychologically undisturbed state, in a thermally neutral environment, while in the post-absorptive state (i.e., not actively digesting food).

Nickzom Calculator is the very first calculator encyclopedia to come out from Nigeria. It is capable of solving over 50,000 calculations and presenting the steps (workings). Fortunately, Nickzom Calculator can solve for your body metabolic rate.

You can access Nickzom Calculator via any of these means:
Web – https://www.nickzom.org/calculator-plus
Android (Paid) – https://play.google.com/store/apps/details?id=org.nickzom.nickzomcalculator
Android (Free) – https://play.google.com/store/apps/details?id=com.nickzom.nickzomcalculator
Apple (Paid) – https://itunes.apple.com/us/app/nickzom-calculator/id1331162702?mt=8

Once, you have access to Nickzom Calculator proceed to the Calculator Map, click on Health | Fitness Calculator under Calculator section

Then, click on Basal Metabolic Rate

Up next, comes a page or activity to enter the values for the respective parameters needed in computing the basal metabolic rate. These parameters according to Nickzom Calculator are:

• Age
• Gender
• Weight (in Kilograms)
• Height (in Centimeters)

For Example: I am 23 years old. I am a male. I weight 105 Kilograms and I am 182 centimeters tall.

The screenshot below displays the values entered appropriately.

Now, click on Calculate

Therefore, according to Mifflin-St. Joer equation, my basal metabolic rate is 2,077.5 calories per day.

## Nickzom Calculator Calculates Body Mass Index

According to Wikipedia,

The body mass index (BMI) or Quetelet index is a value derived from the mass (weight) and height of an individual. The BMI is defined as the body mass divided by the square of the body height, and is universally expressed in units of kg/m2, resulting from mass in kilograms and height in metres.

Nickzom Calculator is the very first calculator encyclopedia to come out from Nigeria. It is capable of solving over 50,000 calculations and presenting the steps (workings). Fortunately, Nickzom Calculator can solve for your body mass index.

You can access Nickzom Calculator via any of these means:
Web – https://www.nickzom.org/calculator-plus
Android (Paid) – https://play.google.com/store/apps/details?id=org.nickzom.nickzomcalculator
Android (Free) – https://play.google.com/store/apps/details?id=com.nickzom.nickzomcalculator
Apple (Paid) – https://itunes.apple.com/us/app/nickzom-calculator/id1331162702?mt=8

Once, you have access to Nickzom Calculator proceed to the Calculator Map, click on Health | Fitness Calculator under Calculator section

Then, click on BMI Calculator

## Calculating Compound Interest Using Nickzom Calculator

Using the Nickzom Calculator for Math calculations is quite simple. Navigation through any of the App platforms from Mobile to Web is quite easy. Just a bit of playing around and you’re quite comfortable with the user interface. Does Math seem hard, Nickzom Calculator makes it easier.

We will consider Compound Interest, how your Principal, Interest and Amount can easily be calculated using the Nickzom calculator. The platform  also goes a long way in showing the formula used, and the steps it took to arrive at its answer.

Compound Interest

Compound Interest being a very popular topic in Mathematics entails basically  Principal, Rate, Interest, Time (number of years) and expected amount. The Nickzom Calculator can carry out calculations on Compound Interest, solving problems on