Electrolysis, examples and importance

Electric current can be conducted through a liquid or liquids by the process of electrolysis. What is electrolysis?  Electrolysis can be defined as decomposition of a certain liquid and solution into their component parts when electricity is passed through them.  Electrolysis cannot be discussed without talking about electrolyte, ions,   voltameter  and  electrodes. What is electrolyte?  It can be …

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Miscarriage prevention, in pregnancy

How to prevent miscarriages Miscarriage prevention : Many pregnancies, up 20% end up in miscarriage. A lot of factors contribute to miscarriage in women, which range from biological factors to lifestyle. According to doctors some miscarriages can be avoided by just changing your lifestyle. While majority are caused by biological factors, which are beyond the …

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Vaginal discharge and Vaginal infection

How to deal with vaginal discharge A discharge from vaginal can be disturbing, if you don’t know how to hygienically cope with it. Vaginal discharge can be attributed to infections, or as a result of vagina be irritated, though many vaginal discharges are normal. Normal vaginal discharges help in keeping the PH balance of your …

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Importance of water in our life (health)

20 IMPORTANCE OF WATER The health benefit and importance of water in our life cannot be over emphasized. Our people say that water is life, now I know they are right. Water is really life. I can tell you without missing word that no waters no life, it is a fact. Water is very important …

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Get rid of toxins out of your body in 11 ways

Get rid of toxins: Toxin can be defined as the poisonous substances in your body.  Toxin can be produced by the activities of metabolism in your body. Toxin can also be deposited in the body by inhaling them, this happens when you expose yourself to toxic environments. Getting rid of toxin in your body can …

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Pregnancy test at home, how to conduct it?

The only way you can conduct pregnancy test at home is by using your urine. pregnancy test at home work by detecting the presence of hormone called human chorionic gonadotropin [HCD], in woman urine. Human chorionic gonadotropin is also known as pregnancy hormone, because it is only found in a pregnant woman, the production of hormone …

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electric circuit , resistors in parallel definition and diagram

Electric circuit, difference types What is electric circuit? It is part through which electric current flows. Electric circuit must consist of the cells or battery, load or resistor, and switch or key.  There are three types of electric circuits; Open, closed and short circuit.   Open circuit: A circuit is said to be open when …

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Transformers, Equation of transformer in physics

Definition of Transformers Transformers are devices use for changing the voltages or currents of an A.C supply. The transformers may be used to increase or decrease the A.C (alternating current) supply. The transformers make use of the properties of mutual inductance to change the voltage of the alternating current (A.C) supply. Transformer may be used …

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Circuit, Current electricity questions and answers

1. What is a circuit in electric current? Answer: A circuit is part through which electric currents flow. 2. List the type of circuit and explain them Answer: Open , closed and short circuits Open circuits: A circuit is said to be open when there is gap between the sources and loads, so that there …

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Eclipse: Lunar eclipse and solar eclipse 

What is eclipse?  It can be described as an astronomical event that occurs when an Celestial body become temporally  obscured , when it  pass into the shadow of another body or by having another body pass between it and the viewer .Eclipse is often used to explain either a solar eclipses or lunar eclipses (eclipses …

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Wave particle duality in micro maters physics

Wave particle duality What is Wave particle duality ? This is the concept of quantum mechanics, which states that every particle or quantum entity may be partly described in terms not only of particles but also of wave. The study of the behavior of light and other electromagnetic radiation, including the properties of wave like …

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Vectors and scalar quantities in physics

Vectors and scalar Representations of vectors Parallelogram law of vector Addition of two vectors (compounding two vectors) Resolution of vectors The resultant of more than two vectors Relative motion Vectors and scalar In physics physical quantities are divided into two; vectors and scalar quantities What is Vector quantity?  Vector quantities are physical quantities that have …

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wave equation, and general wave in physics

Table of Contents What are waves? Mechanical and Electromagnetic waves Waves motion Transverse and longitudinal waves Propagation of waves General representation of waves Terms use in describing waves and relationship between them Equations of traveling of waves Wavefronts Progressive and stationary waves Stroboscope Properties of waves Polarization  and  Polarization by reflection What is wave? A …

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Mirror formula

Mirror formula and the nature of the image formed by curved mirrors

Mirror formula and the nature of the image formed by curved mirrors What is a Mirror formula for concave mirror? A mirror formula is a relationship between the object distance or height (u), image distance or height (v) and focal length of the mirror Reflection of light by curved mirror A concave mirror has a …

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Refraction of light and Snell’s law in physic

Refraction of light CONTENTS Definition of refraction of wave Refraction of  through rectangular glass block Experimental determination of refractive index using real and apparent depth method Laws of Refraction  waves Refraction  through a triangular prism Total internal reflection and Critical angle Application of total internal reflection in nature Application of totally reflecting prisms Refraction  through …

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Reflection of light by plane and covered mirror

Reflection of light : Light is  wave and also a visible form of energy which is radiated outward from a source. We are able to see object because of the light they produce reflects back to us or light that fall on them from other sources also reflects back to us We have luminous and …

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gas laws

Gas laws and equations in physics

What are Gas laws ? To study gas behaviors, we should first of all consider three physical properties of gas, which are pressure volume and temperature. It is based on these three properties that the three gas laws were formulated. Note that among the three states of matter gas is most movable because of high kinetic …

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Nuclear Fission

Nuclear reaction in radioactive elements

What is Nuclear reaction? There are two types of nuclear reaction in radioactive elements – they are nuclear fission and nuclear fusion Nuclear fission This is nuclear reaction which can be defined as a process in which an unstable nucleus split into two parts of comparable mass. Fusion was discovered by Hann and strassman in …

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Simple harmonic motion  Question and answer 

Simple harmonic motion Question and answer  1 what is damped oscillation? Answer: Damped oscillation is one in which the amplitude gradually decrease with time and finally come to stop or zero. Simple harmonic motion Question and answer  2 Is a body moving with constant speed in a circular path undergoing acceleration? Answer: No it not …

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Resonance and forced Vibration in physics

Force Vibration and Resonance Let talk about force vibration before we discuss resonance.  From observation the amplitude of vibration in simple harmonic motion never really remains constant but becomes smaller and smaller. For instance the amplitude of bob of a simple pendulum decrease slowly until it comes to a stop. This is caused by loss …

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Simple harmonic motion in physics

what is simple harmonic motion? If a small body or a particle vibrates or moves to and fro along a straight line under the influence of a force so that its acceleration  toward a fixed point (or it equilibrium position) is proportional to its distance or displacement from that point, the body is said to …

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General physics question and answer 

  general physics questions and answer  1-10 The system international unit of pressure is Nm-2 or what? Answer: Pascal Define pressure. Answer: Pressure is defined as the force per unit area State the Pascal’s principle Answer: The Pascal’s principle states that the pressure applied to an enclosed fluid is       transmitted  undiminished to every …

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Make an AC to DC Converter construction

AC to DC Converter Alternating current (AC) is used for power line transmission and for high power devices like appliances and lights. The characteristics of AC make it ideal for transmission over long lines and for delivering large amounts of power for relatively unregulated uses, such as generating heat and light. Lower power appliances and …

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Radioactive elements

Radioactive elements and radioactivity

What is radioactivity? This is the spontaneous decay or disintegration of unstable nuclei of atoms of radioactive elements  by the emission of alpha (α-) particle, beta (β-) particle and gamma (γ-) radiation with the production of energy. What are radioactive elements?  These are the unstable elements that can decay or disintegrate  spontaneously to emit alpha …

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Physics formulas

Physics formulas, book 0ne for beginner

Physics Formulas for motions For the equation that connect, speed, velocity, acceleration, distance and time, we have four as listed below. V=U+2aS Physics formulas for work done W=Mgh (work done when something fall from up Physics formulas for energy EK=mgh , m=mass, g=gravity h=height Physics formulas for Power Physics formulas for linear expansion of solid …

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Semi conductor

What is semi conductor in physics?

 Semi Conductors These are the material with resistivity between conductors and insulators. That is they are neither conductor nor insulator, therefore they are called Semi conductor. Examples, germanium has resistivity of 0.6×103Ω-m and silicon has resistivity of 1.5×103Ω–m Semi conductors are grouping IV, elements, with four electrons in their outmost shell. The valence electrons of …

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APC

Daily post Nigeria news head lines today

2019: Why we won’t give Buhari automatic ticket – APC Ahead of the 2019 presidential election, the All Progressives Congress, APC, has declared that there will be no automatic ticket for President Muhammadu Buhari and other presidential aspirants in the party. National Publicity Secretary of the APC, Yekini Nabena said there will be no automatic …

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Fundamentals of Physics

Fundamentals of Physics questions and answers

Fundamentals of Physics questions and answers 1-10 Why is it that when you match a rug in your room you feel worn but when you match on the floor which is in the same room temperature with the rug you feel cold? Answer: It is because the cement floor is a good conductor of heat, …

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Projectile motion

Projectile motion in physics, what is it?

What is Projectile motion in physics   Projectile is an object thrown into air or launched in space to move freely by itself under the influence of gravity and air resistance. In projectile  motion we have time of Flight, time to reach maximum height, Maximum height and Range, all these are the parameters we take …

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quasar

Quasar-quasi stellar object facts (brightest object )

What is Quasar Quasar also known as QSO Quasi-Stellar object is   an extremely luminous active galactic nucleus Quasars are the furthest object from galaxy that can be seen Quasars are the brightest object in the universe Quasars are  believed to be a supermassive black hole rounded by an accretion disk. Quasar is about two billion …

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black hole facts

black hole facts you may not know (over 30)

These are the the black hole facts you may not know 1. Black hole is a place in space where gravity pull so much that it can trap light 2. In black hole matter are being squeezed in tiny space hence the strong gravity 3. Nobody can see black hole because no light can get …

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Small scale business

20 Small scale business you can do to make cool money

    20 Small scale business you can do to make cool money   Small Scale business : below we have lists of small scale business you can do. If you are a graduate that have been looking for job, but job is not forthcoming  or whatever you are and you are looking for a …

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How to promote affiliate marketing products

How to promote affiliate marketing products Joining affiliate marketing program alone does not assure you making money online, it is how and where you promote the affiliate marketing that matters.  That is why you may join an affiliate marketing or program but in long run you may make little or nothing because you are not …

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Electromagnetic wave examples, definition

Electromagnetic Wave These are the types of waves that do not need material medium for their propagation. They are produced by electromagnetic vibration. All the electromagnetic wave have the velocity of about 3 x 108m/s , but they defers in their wave length and in their frequency too. Therefore electromagnetic waves can be distinguished by …

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Hey make money doing these online business now

Online business you can do Online business is key now, the truth is that in less than 5 years, if you’re still operating offline business you may not make any sales. Online business is taking over the normal offline business, and that is the trend. If your business is only operating offline, it time you …

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Physics question and answer on wave

Physics question and answer on wave 1 What is wave? Answer: Wave is  a disturbance which travels through a medium, transferring energy from one point to another, without permanently displacing the medium. Read also :  Electromagnetic wave examples and uses Physics question and answer on wave 2 What is the difference between Mechanical wave and …

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make money online in over 30 sites

How to make money online Here you are going to learn, where and how to make money online. There are many places where you can make money online. I am not here to tell you story, therefore I will go direct to tell you how to make money online. Read also:  how to promote affiliate …

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What is force in physics ?

What is force? Force can be defined as  agent that causes a body to change its state of rest or make it change its state and direction of its uniform motion when it  come in contact with the body. It can also be describe as external agent when applied to a body changes its state …

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What is friction in physics?

What is friction? Friction can be defined as a force which act at the surface of separation of two bodies in contact, and tend to oppose the motion of one over the other. Or The force resisting the relative motion of solid surface, fluid layers or object sliding against each other Frictional Force The  frictional …

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Physics question and answer on motion

Physics question and answer on motion 1 A car moves from rest with an acceleration of 0.2m/s2. Find the velocity when it has moved a distance of 50m. Answer V2 + u2 = 2aS Where v = ?, u = 0 (because the car started from rest) a = 0.2m/s2, and  = 50m V2  + …

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Thermal expansion question and answer

Thermal expansion: solid or liquid expand when heat is applied to them. The expansion of any material both liquid and solid depend on the nature of the substance. Thermal expansion question and answer 1 Define the followings (a), Linear expansivity, (b). Cubic or expansivity a nd  (c). Superficial expansivity Answer (a) Linear expansity os solid …

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Physics: specific heat capacity questions and answers

specific heat capacity questions and answers 1 Define specific heat capacity and derive the mathematical formula. Answer The specific heat capacity is defined as the quantity of heat required to raise the temperature of a unit mass (1K)  of a body through a degree rise in temperature(1k). The formula of the specific heat capacity. Note …

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Physics: question and answer on elasticity

Physics: question and answer on elasticity and Hooke’s law 1 Elastic wire extended by 1.0cm when a load of 20g hangs from it. What additional load will be required to cause further extension of 2.0cm? Answer 1.0cm = 0.01m.  2.0cm = 0.02m The force exerted by 20g Convert the 20g to kg  and multiple it …

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Physics: Simple machine question and answers

Simple machine question and answer 1 . A machine has a velocity ratio 5 and 80% efficient. What effort should be needed to lift a load of 200N with the aid of the machine? Answer V.R = 5, Efficiency = 80% Effort needed = 50N Read also question and answer on momentum Simple machine question …

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Physics: questions and answers on momentum and gravity

questions  on momentum and gravity 1 t0 5 Momentum and gravity: Give the direction and magnitude of the net force acting on the followings (1)  drop of rain falling down with a constant speed (2) A cork of mass 10g floating on water (3)) A kite held stationary on the sky (4) A can moving …

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how to read Vernier caliper

Vernier caliper is an instrument use in measurement. We use vernier caliper to measure small length such as diameter of rod ,  internal diameter of a tube  the depth of a cavity or the thickness of a plate, that which cannot be measured accurately  by  meter rule.  parts of the Vernier caliper. A Vernier caliper …

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Newtons Law of cooling statement

Newtons Law of cooling Newtons law of cooling state that for small difference in temperature between a body and it surroundings, the rate of gain or loss of heat by the body is proportional to the difference in temperature between the body and the surroundings. The Newtons law of cooling only holds in small range …

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X ray and Compton scattering

X-ray production The x-ray which is an example of electromagnetic, is produced when a rapid moving electron that have been accelerated through a potential difference of 103v to 106v strike a metal target.  The electron are produced by thermionic emission from the heated cathode and accelerated toward the anode (target) by large potential difference between …

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Laws of Conservation of Momentum (physics)

Law of Conservation of Momentum Before we talk about conservation of momentum, let us first of  all  define momentum. Momentum is the products of mass and velocity. For example if a body of mass, M, is moving with velocity v, then the momentum of the body is = m x v. From the Newton’s second …

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Newton’s laws of motion

Newton’s laws of motion Newton’s laws of motion: Before we discuss Newton’s laws of motion, note that forces are the only thing that cause the motion of a body. Forces: it can be defined as agent that can change or tend to change the state of rest or uniform motion of a body in a …

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Electric field

what is electric Field

Electric Field Electric field cannot be discussed without first all talked about electric force. Electric force: According to coulomb’s law, which state that the force of attraction between two charges is directly proportional to that products of the two charges and inversely proportion to the square of distance separating them and also act along the …

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What is Photo electric effect in physics?

Photo Electric effect What photo electric effect?. It can be defined as the emission of electron from metal surface when photon or electromagnetic radiation fall on it shows on it. For some surface like sodium, the wavelength photons have to be short (ultra-violent  or x-ray). To ensure emission. While for other such as cesium electrons …

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