**Prove that a/b=c/d⇔ad=bc (Principle for equality of fraction)** *Asked by* syed4all, Yesterday 02:38 AM in Mathematics Prove that a/b=c/d⇔ad=bc (Principle for equality of fraction) |

**Question about Proof of Real Number..** *Asked by* syed4all, Jun 21, 2017 11:54 AM in Mathematics Q: For real numbers a,b show the following by stating the properties used:
I) (-a)b = a(-b) = -ab
ii) (-a)(-b) = ab |

**Question about Proof of Real Number..** *Asked by* syed4all, Jun 21, 2017 11:07 AM in Mathematics Q: Prove that for any Real Numbers a,b ab=0⇒a=0 or b=0 |

**Can such an orbit exist? (picture)** *Asked by* maxsc, Jun 11, 2017 10:55 AM in Physics I drew this to show my meaning clearer, now there are some points to consider before answering:
This system only has these 2 planets plus some... |

**Tell me flaw in this design** *Asked by* vikram_gupta11, May 27, 2017 07:55 AM in Physics This machine is based on gravity power and seesaw system.
We can make it more simple .
As per sketch there will be two seesaw system and both will... |

**How to know the order of an recurrence relation** *Asked by* carlito brigant, Jun 17, 2017 12:44 AM in Mathematics Hi, I'm in a hurry,
how to find order of an recurrence relation
for example :
an= an-1 + an^2-2
there order of this function is "2"
how is that... |

**The sum of six consecutive even numbers of set A is 402. What is the sum of another s** *Asked by* tunde lasisi, Jun 16, 2017 06:56 AM in Mathematics The sum of six consecutive even numbers of set A is 402. What is the sum of another set B of four consecutive numbers whose lowest number of set A? |

**What is the common cause of axle problem in a car?** *Asked by* Story Writer, Jun 11, 2017 11:32 AM in Mechanical Engineering Yesterday, while going to the office, my car started behaving abnormally, i.e. the steering got tightened a bit and then after moving ahead a mile,... |

**Kipor genarator no output** *Asked by* TSUMBA, Jun 13, 2017 09:12 PM in Industrial Engineering I have a kipor ade19 sta3 genarator that runs when started but is not giving me any output. I have checked all fuses and they are all OK. What could... |

**Can an earth-like planet be moon to a much bigger planet?** *Asked by* maxsc, Jun 11, 2017 11:21 AM in Paleontology So can an Earth-like planet be the moon to a Jupiter for example? Or something of that size.
And just to be clear, the Earth-like planet comes... |

**help figuring out planet x's orbit** *Asked by* maxsc, Jun 9, 2017 02:09 AM in Astronomy if the years on planet x are 1000 days.
and each 1 day on planet x is equal to 3 earth days.
and if HALF of the year the whole planet is in NIGHT.... |

**How close can a jupiter like planet be to an earth ?** *Asked by* maxsc, Jun 11, 2017 04:27 AM in Paleontology If there is a system with a brighter star and ONLY 2 planets.
Can the MUCH bigger planet be the first planet and the earth like planet be second... |

**Which is the bond in zirconium dioxide** *Asked by* savioukm, Jun 5, 2017 07:44 AM in Chemistry Please tell me which is the bond in the molecule ZrO2? Is it ionic or covalant? |

**Dragonflies** *Asked by* stev95503, May 31, 2017 07:37 PM in Zoology Are hellgrammites and dragonfly larvae the same. Thank You: Hank |

**EtG/EtS Results** *Asked by* cgreen53, Jun 1, 2017 09:10 PM in Forensic Science What are the parameters of this UA. |

**Function Transformation** *Asked by* SN2, May 19, 2017 09:37 PM in Mathematics Given the function f(x)=x+6. The function g(x) results after the function f(x) has been stretched about the x axis by a factor of 3, reflected in the... |

**Trigonometric Identities** *Asked by* SN2, May 19, 2017 09:36 PM in Mathematics 1. Determine the non-permissible values of the identity (1/sinx)(1/cosx)=tan x + (1/tan x)
2. The equation (tan^2 θ)/(1+tan^2 θ) =sin^2 θ is true... |

**Mechanical clock** *Asked by* Brenda Haggai, May 17, 2017 10:48 AM in Mechanical Engineering Why does my mechanical clock run faster as the spring becomes looser? In the weekly cycle of winding, the clock keeps perfect time for the first 2... |

**Electrical load calculation** *Asked by* sebnanp, May 13, 2017 08:09 AM in Electrical Engineering we had a project done recently,
We have used 5 watts bulb.
Total of 235 no.s
voltage -240v
Wires used- 0.75mm duplex stranded cables and... |

**Is the pain med Tramadol as strong as morphine and...** *Asked by* Diane Dimond, May 11, 2017 02:51 PM in Chemistry ... if a lab tested 6 Tramadol pills would the test come back as positive for Morphine?
Reason: A friend of mine is in prison. This person... |