Aceed's Posts
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italkwithsense:e be like say results yapa for your side, no worry...but how will you do something like that ![]() |
Draei:how do you check after going there? By clicking on the admission status tile? |
I don't know why all these people who 'knack' their heads on the ground don't respect round table discussions ![]() They just made the organisers waste money like that...dem suppose sue them wella...which kain rubbish..dem supose talk from beginning say dem no dey do, wetin ![]() make them no think say as dem dey enter our side, we no go enter their side oooo |
providence338:At least with the whites, there's a goal, a satanic goal, an ungodly goal that they hope for that won't last long (max which I believe should be 7years). They aimed very high amongst fake things given by satan to men...but with Africans....the case is different...very different...you can see a father cursing his children every morning that none will be greater than him...like what in the world is that...that is they don't want their child's progress whether spiritually or physically... That's pure wickedness on a rare and bizarre level...as in eh...some will just sit down and derive satanic pleasure seeing things are not working for anybody while still looking for ways to worsen the situation...Africans are realer with themselves when dealing with satan than whites, they know that world domination or not, everyone on satan's side is doomed to be dominated and cast away...therefore, why don't they set little, little domineering goals that they can accomplish in their lifetime and leave what can be called footprints in and of themselves, ehn? |
Nltaliban:Answer: u = 10cm and object distance is 5cm towards the mirror Second one is 5.3m away |
Damayogenius18:6.2m/s |
Nltaliban:Abeg no vex....exam dey door and aspirants here don't answer questions as quick as before or maybe as quick as I expected I con say make I tag unayou try sef ajet, Isiss dem no even answer but I understand they are in a very demanding department... What course do you study? |
Nltaliban:Because they are not too hard for the Taliban ![]() me still dey wait the remaining ooo |
Eben331:length = 10cm=0.1m diameter = 1cm = 0.01m radius = diameter/2 = 0.005m force = 157N Young modulus = 2 x 10^8 Nm^-2 Young modulus = stress/strain stress = force/area; strain = extension/length Young modulus = F/A ÷ e/l YM = Fl/Ae make e subject of formula e = Fl/YA (Area = pie x r^2) therefore, e = (157 x 0.1) ÷ (2*10^8 x 3.14 x 0.005 x 0.005) e = 15.7 ÷ 15700 e = 0.001m or 1x10^-3m (2) A steel bar of length 4m and oflength = 4m load = 10kg force = load x g = 100N Area (of rectangle) = L x B = 2 x 1 = 2cm^2 = 0.0002m extension = ? Young modulus = 2x10^11 Nm^-2 extension e = Fl/YA e = (100 x 4) ÷ (2x10^11 x 0.0002) e = 1 x 10^-5m (3) A metal rod of diameter 7mm,length = 100mm = 0.1m diameter = 7mm = 0.007m radius = d/2 = 0.0035m Young modulus = 2*10^11 Nm^-2 force constant k = ? extension e = Fl/YA but from f=ke; e = f/k therefore f/k = Fl/YA making k the subject of the formula k = YAF/Fl the F above cancels the F below therefore, k = YA/l; (Area = pie x r^2) k =(2*10^11 x 3.14 x 0.0035 x 0.0035) ÷ 0.1 k = 7.693 x 10^7 Nm^-1 |
muehonyx22:First, you are a soldier of Christ. Second, both Christ and the devil deploy their soldiers into battle. Why? There is no place called home on this battleground called earth, everywhere is a war front. Home is either heaven or hell and when you go home no coming back, the present earth is the only place where man would ever have access to the rewards for winning a battle, what you earn here stays with you forever, what you don't earn stays ungettable forever, therefore this is a one time opportunity to attain things that are only attainable on this war front. Don't let fear get the better of you, perfect love casteth out all fear, you might think their noises and their being on your roof isn't doing you any harm, ehnn ehnnn, when darkness is found around the corner, it means only one thing, the light is going out...it is either you get bolder by getting closer to Jesus and tell them to stop making noise and perching on your roof or you become more fearful and they oppress you bad bad and you won't be able to go past your present stage as a Christian because anytime you try to go higher they'll come in bird form and as usual you'll ignore them as a result of fear not believing they're wrecking havoc being there, there is no neutral ground in the spirit neither is there any in the physical Hope you get me... |
An object 0.04m high is placed in front of and at right angles to the axis of a concave mirror which has radius of curvature 0.15m. If a real image 0.12m high is obtained, determine by scale drawing or otherwise, 1. the distance of the object from the mirror 2. how far, and in what direction, must the object be moved in order to obtain a virtual image 0.12m high. An optician uses a plane mirror to help him. Suppose a patient sits in a chair 2.5m away from him. He views the image of a chart which faces the mirror and is located 30cm behind him. How far away is the chart as viewed from his eyes? When a resistance R is across a cell, the voltage across the terminals of the cell is reduced to two-thirds of its nominal value. The internal resistance of the cell is? A cell of internal resistance 2ohms supplies current to a 6ohms resistor. The efficiency of the cell is? A cell of e.m.f 1.5V and internal resistance 2.5ohm is connected in series with an ammeter of resistance 0.5ohm and a resistor of resistance 7.0ohm. Calculate the current in the circuit. The internal resistance of each cell, E1 and E2, connected in parallel is 2ohms to an ammeter A and a resistor of 4ohms. Calculate the total current in the circuit. A work of 3ojoules is done in transferring 5 milliCoulombs of charge from point B to a point A in an electric field. The potential difference between B and A is? The plates of a parallel plate capacitor, 5x10^-3m apart are maintained at a potential difference of 5x10^4V. Calculate the magnitude of the (i) electric field intensity between the plates. (ii) force on the electron (iii)acceleration of the electron (electronic charge = 1.6x10^-19C, mass of electron = 9.1x10^-31kg) What is the potential energy between two protons of charge q and at a distance of r apart? (Permittivity of free space = e(knot)) Find the net capacitance of two capacitors 2F and 3F in series connected in series to two capacitors 3F and 3F in parallel. cc Eben331, Damayogenius18, Nltaliban, DrBestJC |
A man takes 16 breaths per minute at 18°C and 760mmHg.What is his rate of breathing on a mountain-top where the temperature is -5°C and the pressure is 240mmHg. Assume that he needs the same mass of air per minute. What type of electromagnetic radiation can be used to take photographs in the haze? A. Radio waves B. Visible rays C. Ultraviolet rays D. Infrared rays The colour of the positive column in a gas discharge tube is characteristic of the A. Gas and the coating in the tube B. Pressure of the gas only C. Temperature of the gas only D. Pressure and potential difference White phosphorus is stored under water because it is? |
Glycolysis:answer your name, the enzyme involved in your process is located where? ![]() |
150g of ice at 0c is mixed with 300g of water at 50c. Calculate the temperature of the mixture. What mass of ice at -14c will be needed to cool 200cm3 of an orange drink (essentially water) from 25c to 10c? (s.l.h. of fusion of ice = 3.36x10^5, s.h.c of ice = 2100jkg, s.h.c. of water = 4200jkg) A piece of copper of mass 300g at a temperature of 950c is quickly transferred to a vessel of negligible thermal capacity containing 250g of water at 25c. If the final steady temperature of the mixture is 100c, calculate the mass of water that will boil away. (shc of copper = 400JkgK, shc of water = 4200JkgK, slh of vapourization of steam = 2260000Jkg) An electric heater raise the temperature of 120g of water in a thin light vessel through 10K in 2min, when placed in 70g of water contained in a metal vessel of mass 0.55kg the temperature rises through 9K in the same time. Calculate: (i) the heat supplied to the 70g of water (ii) the heat supplied to the metal vessel (iii) the heat capacity of the vessel (iv) the specific hest capacity of its material. (shc of water = 4200JkgK) Dry steam at 100c is bubbled into 500g of water originally at 20c. What will be the temperature of the water after 30g of steam has condensed? (slh of steam = 2260000Jkg, shc of water = 4200JkgK) A piece of copper ball of mass 20g at 200c is placed in a copper calorimeter of mass 60g containing 50g of water at 30c, ignoring heat losses, calculate the final steady temperature of the mixture. (shc of water = 4.2JgK) cc teflonblixx, isiss, drbestjc, ajet001, damayogenius, indomixx, eben331 |
Eben331:Me too...I don't have problems with Tensions questions ![]() |
The limiting frictional force on a body of mass 4kg resting on an inclined plane is 20N. What is the angle of inclination (theta) on the plane? What is the efficiency of a cell with internal resistance of 3ohms, when it supplies current to a 7ohms resistor? Which of the following compounds is not obtained by polymerization? (a) Plastic (b) Polythene (c) Petroleum (d) Cellulose A specimen of zinc contained zinc oxide. 0.80g of this specimen reacted with acid to give 215cm3 of hydrogen collected dry at 170C and 770mmHg. Calculate the percentage of zinc oxide in the mixture. [32.5g Zn = 1g H]. The component elements present in the alloy used for welding and plumbing are? Which of the following is not a component of guard cells? (a) Chloroplasts (b) Nucleus (c) thin inner wall (d) rough spike The enzyme of the glycolytic pathway is located in the? (a)mitochondria (b) golgi apparatus (c) cytoplasm (d) Nucleus The products of photochlorination of ethanoic acid are? What are the products of the reaction between ethyl ethanoate and ammonia? Effervescence occurs when water comes in contact with (a) calcium (b) copper (c) sulphur (d) lead Charring of sugar occurs when it is (a) reduced (b) hydrolysed (c) dehydrated (d) fermented If the cerebellum of a person is slightly damaged, which of the following will be impaired? (a) vision (b) walking (c) Digestion (d) Breathing The aspects of growth in living organisms include all the following processes except (a) reversible increase in size (b) increase in dry weight (c) increase in number of cells (d) irreversible increase in length cc damayogenius, teflonblixx, drbestjc, eben331 PS SHOW WORKINGS WHERE NECESSARY PLEASE |
DrBESTJC:More of these, please...you no wan wear oga cloth shey? |
DrBESTJC:What is the upthrust on a body which displaces 0.6m^3 of water, 0.5m^3 of methylated spirit? (density of water = 10^3 kgm^-3, density of methylated spirit = 0.8 x 10^3 kgm^-3 and g = 10ms^-2) The horizontal door of a submarine at a depth of 500m has an area of 0.4m^2. Calculate the force exerted by the sea water on the door at its depth. (R.D of seawater = 1.03, atm = 1.01x 10^5Nm^-2, Density of pure water = 1000kgm^-3, g = 10ms^-2) An object of mass 1kg falls a distance of 5m onto a horizontal surface and rebounds to a vertical height of 2m. Calculate the change in momentum. A man whose mass is 80kg stands on a spring weighing machine inside an elevator. What is the reading of the weighing machine when the elevator is coming to rest with a retardation of 4.0ms^-2? A rocket of mass 1000kg containing a propellant gas of 3000kg is to be launched vertically. If the fuel is consumed at a steady rate of 60kgs^-1, calculate the least velocity of the exhaust gases if the rocket and content will just lift off the launching pad immediately after firing. A 15.0kg of monkey hangs from a cord suspended from the ceiling of an elevator. The cord can withstand a tension of 200N and breaks as the elevator accelerates. What was the elevator's minimum accleration (in magnitude and direction)? g = 10ms^-2 A tractor of mass 5.0 x 10^3kg is used to tow a car of mass 2.5 x 10^3kg. The tractor moved with a speed of 3.0ms^-1 just before the rope became taut. Calculate the impulse in the rope when it jerks the car into motion. Oga DrBESTJC over to you |
DrBESTJC:answer to this was 40g |
Indomixx:Me sef no know na why I post am...i been dey post for UI thread but now as putme dey near, dem no dey answer quickly...so I say make I come here |
Indomixx: 1. uniben pq 2. 5000N, 4.8x10^3N 3. 4.04N, 8.08N 4. 40g 5. 3.6m^3 6. uniben pq and the uniben pq i have doesn't have answer section Anyone who has uniben pq with answer booklet ready made softcopy or if you can scan and upload, I'll appreciate |
DrBESTJC...OGA NA MASTER... ...hmmm which course you dey vie for... you don scatter book oooo |
And someone should please explain GAXULIR |
What is the tension in the cable holding a mine of mass 600kg and volume 0.8m^3 to the sea bed, so that it is totally submerged. What is the upthrust on a body which displaces 0.6m^3 of water, 0.5m^3 of methylated spirit? (density of water = 10^3 kgm^-3, density of methylated spirit = 0.8 x 10^3 kgm^-3 and g = 10ms^-2) A body of mass 700g hangs from the end of a long wire fixed to a high tree. A horizontal string attached to the body pulls it until the wire is at 30 degrees to the vertical. Find the tensions in both the string and the wire. A block of material of volume 20cm^3 and density 2.5gcm^-3 is suspended from a spring balance with half the volume of the block immersed in water. What is the reading of the spring balance? (density of water = 1.0gcm^-3) What volume of alcohol with a density of 8.4 x 10^2 kgm^-3 will have the same mass as 4.2m^3 of petrol whose density is 7.2 x 10^2 kgm^-3? A force of 300N was used to pull a load of mass 40kg at a steady speed up an inclined of length 6.2m and vertical height 3.5m. Determine the velocity ratio WORKINGS PLEASE... |
What is the tension in the cable holding a mine of mass 600kg and volume 0.8m^3 to the sea bed, so that it is totally submerged. What is the upthrust on a body which displaces 0.6m^3 of water, 0.5m^3 of methylated spirit? (density of water = 10^3 kgm^-3, density of methylated spirit = 0.8 x 10^3 kgm^-3 and g = 10ms^-2) A body of mass 700g hangs from the end of a long wire fixed to a high tree. A horizontal string attached to the body pulls it until the wire is at 30 degrees to the vertical. Find the tensions in both the string and the wire. A block of material of volume 20cm^3 and density 2.5gcm^-3 is suspended from a spring balance with half the volume of the block immersed in water. What is the reading of the spring balance? (density of water = 1.0gcm^-3) What volume of alcohol with a density of 8.4 x 10^2 kgm^-3 will have the same mass as 4.2m^3 of petrol whose density is 7.2 x 10^2 kgm^-3? A force of 300N was used to pull a load of mass 40kg at a steady speed up an inclined of length 6.2m and vertical height 3.5m. Determine the velocity ratio WORKINGS PLEASE... cc eben331 damayogenius18 teflonblixx (pics with workings are acceptable) |
A ball of mass 10kg strikes a wall normally with a velocity of 5ms-1 and travels back with the same velocity. Calculate its impulse on the wall. Calculate the velocity of the wave represented by the following wave equation y =20sin(60(pie)x - 0.5(pie)x) , if all the distances are in metres. A stone is projected vertically upwards with a velocity of 20ms. Two seconds later, a second stone is projected similarly with the same velocity. When the two stones meet, the second one is rising at a velocity of 10ms. Calculate (i)the length of time the second stone is in motion before they met. (ii) velocity of the first stone when they met. (g=10ms) PS I NEED WORKINGS. DON'T JUST COME AND DROP ANSWER CC EBEN331, DAMAYOGENIUS18, TEFLONBLIXX |
TeflonBlixx:No |
A ball of mass 10kg strikes a wall normally with a velocity of 5ms-1 and travels back with the same velocity. Calculate its impulse on the wall. Calculate the velocity of the wave represented by the following wave equation y =20sin(60(pie)x - 0.5(pie)x) , if all the distances are in metres. A stone is projected vertically upwards with a velocity of 20ms. Two seconds later, a second stone is projected similarly with the same velocity. When the two stones meet, the second one is rising at a velocity of 10ms. Calculate (i)the length of time the second stone is in motion before they met. (ii) velocity of the first stone when they met. (g=10ms) PS I NEED WORKINGS. DON'T JUST COME AND DROP ANSWER |
Though money is needed in this life but it doesn't make a man fulfilled, trust me. I'm sure the encouragements you're receiving here is soothing even though it was intended for profit But one day, God willing, you will shine, no matter how small it may be, no matter how old you may be, so far you are diligent and in line with God, that day will surely come. |
A ball of mass 10kg strikes a wall normally with a velocity of 5ms-1 and travels back with the same velocity. Calculate its impulse on the wall. Calculate the velocity of the wave represented by the following wave equation y =20sin(60(pie)x - 0.5(pie)x) , if all the distances are in metres. A stone is projected vertically upwards with a velocity of 20ms. Two seconds later, a second stone is projected similarly with the same velocity. When the two stones meet, the second one is rising at a velocity of 10ms. Calculate (i)the length of time the second stone is in motion before they met. (ii) velocity of the first stone when they met. (g=10ms) PS I NEED WORKINGS. DON'T JUST COME AND DROP ANSWER CC EBEN331, DAMAYOGENIUS18, TEFLONBLIXX |
Eben331:A man can row a boat at 4kmhr in still water. He rows the boat about 2km upstream and 2km back to his starting place in 2hrs. How fast is the stream flowing? A plane is headed north with a velocity of 400kmhr and a westwind is blowing at 70kmhr. Find the distance of the plane from its base in 2 hours. An antiaircraft shell is fired vertically upward with a muzzle velocity of 1000ms. Calculate the (i) instantaneous velocities at the end of 20secs and 50 secs (ii) When will its height be 37.5km? Inteprete your result. Neglect air resistance cc TeflonBlixx, Damayogenius18 |
Eben331:Na so I see am for answer booklet but how una take dey get am na im I wan know ![]() |
