# Robotic

Most popular questions and responses by Robotic
1. ## Chemistry

32g of anhydrous copper(ii)tetraoxosulphate(iv) dissolves in 1Dm3 of water generated 13.0KJ of heat,The heat of solution is

2. ## 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?

3. ## Physics

In a box there are 10 T-shirts,15 long sleeve shirts and 25 gowns.If one attire is picked at random, what is the probability that the attire is either a T-shirt or a gown?

4. ## 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?

5. ## 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?

6. ## 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?

7. ## Biology

What is the population of tridax with 53 frequency and 100 times of quadrant tossed in a land.?

8. ## 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?

9. ## 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?

10. ## 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.

11. ## 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?

12. ## Maths

factorise the following m^2 - n^2 - mq - nq?

13. ## Maths

factorise the following (1). 5ax - 5bx - a+b (2). m2 - n2 - mq - nq?

14. ## Maths

A trader realizes 25x-x^2 naira from the sale of X bags of rice.find the sum of bags that will give him the maximum profit?

15. ## Maths

if 480.00 is borrowed for 3years simple intrest became 516. what was it rate?

16. ## Physics

If 6Cr/6pr=1/6, find the value of r. A.1 B.3 C.5 D.6?

17. ## 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?

18. ## Maths

solve simultaneously 0.5m +0.2n # 5........(1) 0.6m +0.4n # 8.4.......(2)?

19. ## Physics

if the maximum voltage across a 100 ohm resistor is 20. then the maximum power it can dissipate is?

20. ## 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

21. ## 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?

22. ## 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?

23. ## Maths

In how many ways can 7 directors sit round a table A.720 B.120 C.24 D.5040?

24. ## 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?

25. ## Physics

A radioactive source has a half-life of 6 days.How long will it take for the count rate to fall from 180 per minutes to 145.

26. ## Maths

Which of the following is the smallest (clear calculation is required) 2^600,3^500,4^400,5^300 Or 6^200?

27. ## Physics

Calculate the mass of 3.7dm^3 of hydrogen at 21.5°c and a pressure of 102Pa?

28. ## Maths

evaluates log 0.225base10 if log 3 base10=0.477and log5base10=0.699?

29. ## Maths

What is the remainder when f(x)=(x-2)^59 is divided by x-1?

30. ## Physics

222 Ra successfully looses 3 alpha particles and further 2 beta particles Write out the formula of n 88?

31. ## Maths

x=[1,2,3,4,5,6],Y=[2,4,5,7],z=[1,4,5]

32. ## 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?

33. ## 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?

34. ## 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?

35. ## 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?

36. ## 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?

37. ## Maths

(√6 + 2)^2 _(√6 _2)^2 Surd?

38. ## 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?

39. ## Maths

Five students were late to class and only three vacant seats were available. In how many ways can the seats be occupied?

40. ## Physics

For an electronic in nucleus make 180 revolution in 1.5 weeks what is the angular velocity of the electron?

41. ## 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

42. ## 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?

43. ## 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?

44. ## 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?

45. ## 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?

46. ## 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?

47. ## Physics

a capacitor 8uf is charged to a potential difference of 100v. the energy stored by the capacitor is?

48. ## 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?

49. ## 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)?

50. ## Maths

Factorize 8!-5(7!) A.4!7! B.3-7! C.4 x 7! D.3! X 7!?

51. ## 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?