Robotic
Most popular questions and responses by Robotic
Chemistry
32g of anhydrous copper(ii)tetraoxosulphate(iv) dissolves in 1Dm3 of water generated 13.0KJ of heat,The heat of solution is
asked on July 24, 2019 
Physics
A heating instrument has 12 resistors and they are placed vertically and they have uniform reducing power.The power of the first, second,third and fourth resistors are 300ohms,260ohms,220ohms and 180ohms respectively.Find the power of the resistor?
asked on July 31, 2019 
Physics
In a box there are 10 Tshirts,15 long sleeve shirts and 25 gowns.If one attire is picked at random, what is the probability that the attire is either a Tshirt or a gown?
asked on July 31, 2019 
Physics
1.0g of the oxide of metal x(atomic mass =64)gave 0.08g of the mental when reduced with hydrogen. the formula of oxide is?
asked on July 31, 2019 
Physics
if V is the velocity of a wave, it'd wave length and T it'd period, the V, d and T are related by the expression?
asked on July 24, 2019 
Maths
The first and last terms of an A.p are 10 and 90,if the sum of terms is 750,the number of terms is used to find the common difference if the sum is 1400?
asked on July 31, 2019 
Biology
What is the population of tridax with 53 frequency and 100 times of quadrant tossed in a land.?
asked on August 6, 2019 
Physics
A heating instrument has 12 resistors and they are placed vertically and have a uniform reducing Power.The powers of the first, second, third and fourth resistors are 3000,2600,2200 and 1800 respectively.Find the power of the resistor?
asked on July 31, 2019 
Physics
A milliammeter of resistance 2.5ohms and a full deflection of 50mA iS to be used to measure a potential difference of 50v. What's the resistance of the multipliers?
asked on July 25, 2019 
Chemistry
200cm3 of oxygen diffused through a porous plug in 50 secs,how long will 80cm3 of methane(CH4) take to diffuse through the same porous plug under the same condition.
asked on July 24, 2019 
Maths
If Boneri adds 2 to the numerator of a fraction,the fraction becomes 1/3.If he subtracts 3 from the denominator of the fraction,it becomes 1/4.What is the fraction?
asked on July 31, 2019 
Maths
factorise the following m^2  n^2  mq  nq?
asked on July 28, 2019 
Maths
factorise the following (1). 5ax  5bx  a+b (2). m2  n2  mq  nq?
asked on July 27, 2019 
Maths
A trader realizes 25xx^2 naira from the sale of X bags of rice.find the sum of bags that will give him the maximum profit?
asked on July 30, 2019 
Maths
if 480.00 is borrowed for 3years simple intrest became 516. what was it rate?
asked on July 28, 2019 
Physics
If 6Cr/6pr=1/6, find the value of r. A.1 B.3 C.5 D.6?
asked on July 28, 2019 
Chemistry
calculate the quantity of electricity passed when 0.4A flows for 1hr 20minutes through an electrolytic cell. (a) 4800C (b) 3840C (c) 1920C (d) 32C?
asked on July 24, 2019 
Maths
solve simultaneously 0.5m +0.2n # 5........(1) 0.6m +0.4n # 8.4.......(2)?
asked on August 6, 2019 
Physics
if the maximum voltage across a 100 ohm resistor is 20. then the maximum power it can dissipate is?
asked on August 6, 2019 
English
There are five boys ________ A) whom two were beaten B) of which two were beaten C) two of whom were beaten D) of whom two were beaten 2. This is the man _____ told me the news A) who I said B) said that he C) whom I said D) who I said he Am not an English
asked on August 5, 2019 
Physics
calculate the length which corresponds to a temperature of 10°C has a linear expansivity of 2*10^5K^1. calculate the length of the wire at a temperature of 10°C?
asked on July 24, 2019 
Physics
A conductor has a diameter of 1.00mm and length 2.00m.if the resistance of the material is 0.1 ohms,it's resistivity is A.3.93 ×10^6 B.2.55 ×10^2 C.3.93 ×10^8 D.2.25×10^2?
asked on July 27, 2019 
Maths
In how many ways can 7 directors sit round a table A.720 B.120 C.24 D.5040?
asked on July 28, 2019 
Accounting
A man invested a total of $50,000 in two companies.if these companies pay dividend of 6% and 8% respectively.How much did he invest at 8% if the total yield is & $3,700?
asked on August 6, 2019 
Physics
A radioactive source has a halflife of 6 days.How long will it take for the count rate to fall from 180 per minutes to 145.
asked on August 7, 2019 
Maths
Which of the following is the smallest (clear calculation is required) 2^600,3^500,4^400,5^300 Or 6^200?
asked on July 25, 2019 
Physics
Calculate the mass of 3.7dm^3 of hydrogen at 21.5°c and a pressure of 102Pa?
asked on August 1, 2019 
Maths
evaluates log 0.225base10 if log 3 base10=0.477and log5base10=0.699?
asked on August 1, 2019 
Maths
What is the remainder when f(x)=(x2)^59 is divided by x1?
asked on July 25, 2019 
Physics
222 Ra successfully looses 3 alpha particles and further 2 beta particles Write out the formula of n 88?
asked on August 1, 2019 
Maths
x=[1,2,3,4,5,6],Y=[2,4,5,7],z=[1,4,5]
asked on August 1, 2019 
Maths
If x,y can take values from the set (1,2,3,4),find the probability that the product of x and y is not greater than 6?
asked on August 5, 2019 
Physics
a 2kg steel block is originally at 10°c. if 40kj of heat energy are added to the block, what is its final temperature?
asked on August 7, 2019 
Chemistry
The densities of gases,X and Y are 0.5gdm³ and 2.0gdm³ respectively.what is the rate of diffusion of X relative to Y? A.4.0 B.0.1 C.0.5 D.2.0?
asked on July 26, 2019 
Maths
Two numbers are chosen at random from three numbers 1,3,5.Find the probability that the sum of the two is not odd?
asked on August 5, 2019 
Maths
Three people share an inheritance in the ratio 2:3:4 and the share of the person who receives most is $5000. The share of the person next to him is $1250 more than the third person. How much does the third person receive?
asked on July 25, 2019 
Maths
(√6 + 2)^2 _(√6 _2)^2 Surd?
asked on August 3, 2019 
Physics
calculate the time taken for a car to cover a distance of 125m if the initial speed is 5m/s AMD it has a constant acceleration of 1.5m/s?
asked on July 29, 2019 
Maths
Five students were late to class and only three vacant seats were available. In how many ways can the seats be occupied?
asked on July 25, 2019 
Physics
For an electronic in nucleus make 180 revolution in 1.5 weeks what is the angular velocity of the electron?
asked on July 26, 2019 
Maths
A bag contains 10 black balls and 15 white balls.if a ball is picked at random without replacement, what is the probability of picking a white ball? A.1/5 B.3/5 C.2/5 D.4/5
asked on August 7, 2019 
Physics
two resistors R1=4 ohms and R2=5 ohms, are connected parallel across a potential difference. if P1 and P2 represents the power dissipate in R1 and R2 respectively, then the ratio P1:P2 is?
asked on August 6, 2019 
Maths
A cinema hall contains a number of people If 221/2% are children 471/2% are men and 84 are women find the number of men in the hall?
asked on July 25, 2019 
Maths
A woman is six times as old as her daughter.seven years ago,if the sum of their ages was 49.Find the age of the woman A.9 years B.30 years C.54 years D.45 years?
asked on August 8, 2019 
Maths
The probability of an event P is 3/4 while that of another event Q is 1/6.If the probability of both P and Q is 1/2.What is the probability of either P or Q?
asked on August 5, 2019 
Maths
Three boys play a game of luck in which their respective chances of winning are 1/2 1/3 and 1/4.What is the probability that one and only one of the boys wins the game?
asked on August 5, 2019 
Physics
a capacitor 8uf is charged to a potential difference of 100v. the energy stored by the capacitor is?
asked on August 6, 2019 
Maths
the 2nd multiple of two numbers is 44 and one of the number is a prime number.find the (1) L. C. M of the number (2) the prime numbers (3) the other number?
asked on August 8, 2019 
Physics
9.60g of a gas X occupies the same volume at 0.30g of hydrogen under the same condition calculate the molar of X (H=1)?
asked on August 8, 2019 
Maths
Factorize 8!5(7!) A.4!7! B.37! C.4 x 7! D.3! X 7!?
asked on August 8, 2019 
Physics
What is the PH of a 0.075M solution of the acid HA if the Ka for the acid is 4.8×10raise to power 8?
asked on August 8, 2019

English
Number 1 I choose D. of whom two were beaten Number 2 i choose C.whom I said I failed right?
posted on August 5, 2019 
Maths
I got . 2 ½ % as the answer.
posted on July 28, 2019