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#1 Re: Ganesh's Puzzles » General Quiz » Yesterday 15:03:38

Hi;

#6645. Name the seventh President of the United States, nicknamed "Old Hickory".

#6646. Name the person (28 October 1466 – 12 July 1536), known as Erasmus or Erasmus of Rotterdam, a Dutch Renaissance humanist, Catholic priest, social critic, teacher, and theologian.

#2 Dark Discussions at Cafe Infinity » Kalam SAT » Yesterday 14:35:30

ganesh
Replies: 0

Kalam SAT is a microsatellite, named after former Indian president Dr. A. P. J. Abdul Kalam built by an Indian High school student team for participation in the Cubes in Space, a STEM-based education program by NASA, with an objective to teach school students (ages 11-18) how to design and compete to launch an experiment into space with a free opportunity to design experiments to be launched into space on a NASA rocket or balloon if there project is selected. Kalam SAT was launched by NASA along with several other Cube SAT micro satellite from other participants on 22 June 2017 from Wallops Island.

Although Kalam SAT has been reported to be the world’s lightest satellite, the term 'lightest' probably applies more to the KickSat Sprite—which is considerably smaller, lighter, and actually flown in orbit. Due to a malfunction, KickSat Sprites never deployed from KickSat, so that KickSat 1 orbited the earth as a 5.5 Kilograms 3U CubeSat. The Sprites burned up inside KickSat during re-entry. In its first deployment, KalamSat won't actually be a satellite since it won't reach orbit; it will only fly on a sounding rocket.

The probe was built by a team of 7 people led by Rifath Sharook, an 18 year old student from Pallapatti, Tamil Nadu, India, on behalf of Space Kidz India, a Research Organisation based on Chennai, as a part of a competition, named as - ‘Cubes in Space’. This contest was jointly organised by NASA and another organisation ‘I Doodle Learning’ which is a global education company. This will be the first time that a space probe, made by an Indian student, will be launched by NASA.

The weight of the probe is just 64 grams and it is fitted in a 3.8 centimeters cube. The probe is composed of 3-D printed reinforced carbon fiber polymer. Part of the components were supplied from India and other parts from abroad. The probe will be launched by a sub-orbital spaceflight. The expected time span of the mission (post flight) is 240 minutes. The tiny probe will be operated only for less than 12 minutes to demonstrate the performance of 3-D printed carbon fiber in a micro-gravity environment of space.

#3 Re: Dark Discussions at Cafe Infinity » The amazing story of a dog » Yesterday 14:14:10

Hi iamaditya,

Yes, you are correct. Now, the three Administrators are MathsIsFun, bob bundy and me.

#6 Re: Introductions » having fun with math » 2017-06-17 14:15:32

Hi KenE,

Welcome to the forum! Very nice introduction!

#7 Re: Introductions » I'm a new member » 2017-06-02 16:23:21

Hi;

Welcome to the forum, CesarConspirator!

#8 Re: Introductions » i am new here » 2017-05-26 23:36:25

Hi  nicole19,

Welcome to the forum!

#9 Re: Ganesh's Puzzles » Oral puzzles » 2017-05-23 15:20:26

Hi;

The solution #3785 is correct. Neat work, zetafunc!

#3786. Determine the nature of the roots of the following quadratic equation:
(x - 2a)(x - 2b) = 4ab.

#10 Re: Ganesh's Puzzles » Oral puzzles » 2017-05-22 21:20:15

Hi;

The solution #3784 is correct. Excellent, zetafunc!

#3785. Determine the nature of the roots of the following quadratic equation:

.

#11 Re: Ganesh's Puzzles » Oral puzzles » 2017-05-22 14:50:13

Hi;

The solution #3783 is correct. Excellent, zetafunc!

#3784. Find the value of k for which each of the following systems of equations have infinitely many solution:
2x + 3y = k,
(k - 1)x + (k + 2)y = 3k.

#12 Re: Ganesh's Puzzles » Oral puzzles » 2017-05-21 22:02:55

Hi;

The solution #3782 (two parts) is correct. Brilliant, zetafunc!

#3783. Find the value of k for which each of the following systems of equations have infinitely many solution:
kx + 3y = 2k + 1,
2(k + 1)x + 9y = 7k + 1.

#13 Re: Ganesh's Puzzles » Oral puzzles » 2017-05-21 19:17:00

Hi;

The solution #3781 is correct. Neat work, zetafunc!

#3782. Find the value of k for which the system
kx + 2y = 5
3x + y = 1
has (i) a unique solution, and (ii) no solution.

#14 Re: Ganesh's Puzzles » Oral puzzles » 2017-05-21 15:55:49

Hi;

The solution #3780 is correct. Excellent, Monox D. I-Fly!

#3781. For what value of k the following system of equations will be inconsistent?
4x + 6y = 11,
2x + ky = 7.

#15 Re: Ganesh's Puzzles » Oral puzzles » 2017-05-20 15:06:46

Hi;

The solution #3779 is correct. Neat work, zetafunc!

#3780. Find the value of k for which the following system of equations has no solution:
2x + ky = 11,
5x - 7y = 5.

#16 Re: Ganesh's Puzzles » Oral puzzles » 2017-05-19 22:40:27

Hi;

The solution #3778 is correct. Splendid, zetafunc!

#3779.  Find the value of k for which each of the following system of equations have infinitely many solution:
2x + (k - 2)y = k,
6x + (2k - 1)y = 2k + 5.

#17 Re: Exercises » Compute the solution: » 2017-05-19 21:21:30

Hi;

The solution 638 is correct. Brilliant!

639. If 1 is a root of the quadratic equation

and the quadratic equation
has equal roots, find the value of b.

#18 Re: Ganesh's Puzzles » Oral puzzles » 2017-05-19 21:05:51

Hi;

The solution #3776 is correct. Neat work ,zetafunc!

#3778.  Find the value of k for which each of the following system of equations have infinitely many solution:
x + (k + 1)y = 4,
(k + 1)x + 9y = 5k + 2.

#19 Re: Ganesh's Puzzles » Oral puzzles » 2017-05-19 14:47:59

Hi;

The solution #3776 is correct. Keep it up, zetafunc!

#3777.  Find the value of k for which each of the following system of equations have infinitely many solution:
2x + 3y = 2,
(k + 2)x + (2k + 1)y = 2(k - 1).

#20 Re: Ganesh's Puzzles » Oral puzzles » 2017-05-19 00:26:46

Hi;

The solution #3775 is correct. Good work, zetafunc!

#3776. Find the value of k for which each of the following system of equations have infinitely many solution:
2x - 3y = 7,
(k + 2)x - (2k + 1)y = 3(2k - 1).

#21 Re: Ganesh's Puzzles » General Quiz » 2017-05-18 23:23:02

Hi;

Good attempt, Monox D. I-Fly!

#6643. Name the nation : Total area : 1,972,550 square kilometers (761,610 sq mi) (13th in the World); North America.

#6644. Name the nation : Total area :  1,566,000 square kilometers (605,000 sq mi) (18th in the World); Asia.

#22 Re: Ganesh's Puzzles » 10 second questions » 2017-05-18 23:03:13

Hi;

The solution #6201 is correct. Good work, Monox D. I-Fly!

#6202. A circus tent is cylindrical to a height of 4 meters and conical above it. If its diameter is 105 meters and its  slant height  is 40 meters, find the total area of the canvas required in square meters.

#23 Re: Ganesh's Puzzles » Oral puzzles » 2017-05-18 22:51:56

Hi;

The solution #3774 is correct. Neat work, zetafunc!

#3775. Find the value of k for which each of the following system of equations have infinitely many solution:
8x + 5y = 9,
kx + 10y = 18.

#24 Re: Dark Discussions at Cafe Infinity » 1000 digit calculator » 2017-05-15 21:39:27

Hi;

Checked a few samples. Works well. Very Good!

#25 Re: Ganesh's Puzzles » Mensuration » 2017-05-11 21:36:11

Hi;

The solution M #285 is correct. Excellent, bobbym!

M #286. If the radii of the circular ends of a conical bucket which is 45 cm high be 28 cm and 7 cm, find the capacity of the bucket.

.

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