Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

Hi bobbym,

The solution #1888 is perfect. Brilliant, bobbym!

#1889. Find the Greatest Common Divisor of

.Hi bobbym,

The solutions #5161 and #5162 are correct. Good work, bobbym!

#5163. If the diagonal of a square is made 1.5 times, then what is the ratio of the areas of two squares?

#5164. The length and breadth of a square are increased by 40% and 30% respectively. The area of the resulting rectangle exceeds the area of the square by what percent?

Hi bobbym,

The Answers : #5261 - Murray Gell-Mann and #5262 - Dennis Gabor.

The Answer #5261 is perfect. Excellent, bobbym!

#5263. Name the American economist and joint winner of the Nobel Memorial Prize in Economics with John Hicks in 1972. To date, he is the youngest person to have received this award, at 51. In economics, he is a figure in post-World War II neo-classical economic theory. Many of his former graduate students have gone on to win the Nobel Memorial Prize themselves. His most significant works are his contributions to social choice theory and his work on general equilibrium analysis.

#5264. Name the Italian scientist who is most noted for his contributions to molecular theory, including what is known as a law attributed to him. In tribute to him, the number of elementary entities (atoms, molecules, ions or other particles) in 1 mole of a substance, attributed to him, known as a constant. The law 'states that the relationship between the masses of the same volume of different gases (at the same temperature and pressure) corresponds to the relationship between their respective molecular weights. Hence, the relative molecular mass of a gas can be calculated from the mass of sample of known volume.'

Hi bobbym,

#5161. What happens to the area of a square when its side is halved?

#5162. If the area of a square increases by 69%, then the side of the square increases by what percent?

Hi bobbym,

The solution #1887 is correct. Remarkable!

#1888. Find the Greatest Common Divisor of

.Hi bobbym,

The Answers #5259 (William Shockley) and #5260 (Lev Landau) are correct. Splendid!

#5261. Name the American physicist who received the 1969 Nobel Prize in physics for his work on the theory of elementary particles. He introduced, independently of George Zweig, the quark - constituents of all hadrons - having first identified the SU(3) flavor symmetry of hadrons. This symmetry is now understood to underlie the light quarks, extending isospin to include strangeness, a quantum number which he also discovered.

#5262. Name the Hungarian electrical engineer and physicist, most notable for inventing holography, for which he later received the 1971 Nobel Prize in Physics. Following the rapid development of lasers and a wide variety of holographic applications (e.g., art, information storage, and the recognition of patterns), he achieved acknowledged success and worldwide attention during his lifetime.

Hi bobbym,

The solution #1885 is correct. Unblemished!

#1886. Find the Greatest Common Divisor of

.Hi bobbym,

The Answers : #5257 - Ernest Lawrence and #5258 - Percy Williams Bridgman.

The Answer #5257 is correct. Excellent, bobbym!

#5259. Name the American physicist and inventor; along with John Bardeen and Walter Houser Brattain, he co-invented the transistor, for which all three were awarded the 1956 Nobel Prize in Physics.

#5260. Name the Soviet physicist who made fundamental contributions to many areas of theoretical physics; his accomplishments include the independent co-discovery of the density matrix method in quantum mechanics (alongside John von Neumann), the quantum mechanical theory of diamagnetism, the theory of superfluidity, the theory of second-order phase transitions. He received the 1962 Nobel Prize in Physics for his development of a mathematical theory of superfluidity that accounts for the properties of liquid helium II at a temperature below 2.17 K (−270.98°C).

Hi bobbym,

The solution #1884 is correct. Awesome!

#1885. Find the Greatest Common Divisor of

Hi bobbym,

The Answers : #5255 - Paul Adrien Maurice Dirac and #5256 - Carl David Anderson.

The Answer #5255 is correct, bobbym! Brilliant!

#5257. Name the pioneering American nuclear scientist, winner of the Nobel Prize for Physics in 1939 for his invention of the cyclotron. He is also known for his work on uranium-isotope separation for the Manhattan Project.

#5258. Name the American physicist who won the 1946 Nobel Prize in Physics for his work on the physics of high pressures. He also wrote extensively on the scientific method and on other aspects of the philosophy of science. In 1905, he began investigating the properties of matter under high pressure. A machinery malfunction led him to modify his pressure apparatus; the result was a new device enabling him to create pressures eventually exceeding 100,000 kgf/cm² (10 GPa; 100,000 atmospheres).

Hi bobbym,

The solution #5157 is correct. Excellent!

#5159. If the ratio of areas of two squares is 225:256, then the what is the ratio of their perimeters?

#5160. If each side of a square is increased by 50%, then what is the ratio of the area of the resulting square to that of the given square?

Hi bobbym,

The solution #5158 is correct. Excellent!

Regarding #5157, you got it right! I shall wait for your solution!

Hi bobbym,

The Answers #5253 and #5254 are Max Planck and Johannes Stark.

The Answer #5253 is correct. Good work, bobbym!

#5255. Name the English theoretical physicist who made fundamental contributions to the early development of both quantum mechanics and quantum electrodynamics. He shared the Nobel Prize in Physics for 1933 with Erwin Schrödinger, "for the discovery of new productive forms of atomic theory". He also did work that forms the basis of modern attempts to reconcile general relativity with quantum mechanics.

#5256. Name the American physicist who is best known for his discovery of the positron in 1932, an achievement for which he received the 1936 Nobel Prize in Physics, and of the muon in 1936.

Hi bobbym,

#1884. Find the Greatest Common Divisor of

.Hi bobbym,

The solutions #5155 and #5156 are correct. Marvelous!

#5157. What is the ratio of the area of a square to that of the square drawn on its diagonal?

#5158. What is the ratio of the areas of two squares, one having its diagonal double than the other?

Hi bobbym,

The Answers #5251 and #5252 are correct. Marvelous!

#5253. Name the German theoretical physicist who originated quantum theory, which won him the Nobel Prize in Physics in 1918. He made many contributions to theoretical physics, but his fame rests primarily on his role as originator of the quantum theory. This theory revolutionized human understanding of atomic and subatomic processes, just as Albert Einstein’s theory of relativity revolutionized the understanding of space and time.

#5254. Name the German physicist, and Physics Nobel Prize laureate who in 1919, won the Nobel Prize in Physics for his "discovery of the Doppler effect in canal rays and the splitting of spectral lines in electric fields".

Hi bobbym,

The solution #5153 is correct. Excellent, bobbym!

#5155. If the length of the diagonal of a square is 20 centimeters, then what should its perimeter be?

#5156. The area of a square field is 69696 square centimeters. What would its diagonal be equal to?

Hi bobbym,

The solution #1882 is correct. Splendid!

#1883. Find the Greatest Common Divisor of

.Hi Whizzies,

**Welcome to the forum!**

Hi bobbym,

#5251. Name one of the major English Romantic poets and is regarded by critics as amongst the finest lyric poets in the English language. A radical in his poetry as well as his political and social views, he did not achieve fame during his lifetime, but recognition for his poetry grew steadily following his death. He was perhaps best known for such classic poems as *Ozymandias, Ode to the West Wind, To a Skylark, Music, When Soft Voices Die, The Cloud* and *The Masque of Anarchy.*

#5252. Name the Russian professional tennis player who as of July 7, 2014 is ranked world No. 6 by the Women's Tennis Association (WTA) and is the top Russian player. A United States resident since 1994, she has won 32 WTA singles titles, including five Grand Slam singles titles. She has also won the year-end WTA Tour Championships in 2004. The WTA has ranked her world No. 1 in singles on five separate occasions, for a total of 21 weeks. She became the world No. 1 for the first time on August 22, 2005, and last held the ranking for the fifth time for four weeks from June 11, 2012 to July 8, 2012.

Hi bobbym,

The solution #1881 is absolutely right! Remarkable, bobbym!

#1882. Find the Greatest Common Divisor of

.Hi bobbym,

The solution #5151 is correct. Excellent!

#5153. A man walked diagonally across a square lot. Approximately, what was the percent saved by not walking along the edges?

#5154. A man walking at the speed of 4 kilometers per hour crosses a square field diagonally in 3 minutes. What is the area of the field?

Hi bobbym,

Excellent, bobbym (#5247)!

#5249. Name the (15 February 1874 – 5 January 1922) polar explorer who led three British expeditions to the Antarctic, and one of the principal figures of the period known as the Heroic Age of Antarctic Exploration. After the race to the South Pole ended in December 1911 with Roald Amundsen's conquest, he turned his attention to what he said was the one remaining great object of Antarctic journeying: the crossing of the continent from sea to sea, via the pole. To this end he made preparations for what became the Imperial Trans-Antarctic Expedition, 1914–17. Disaster struck this expedition when its ship, Endurance, became trapped in pack ice and was slowly crushed before the shore parties could be landed.

#5250. Name the Soviet/Russian novelist and winner of the 1965 Nobel Prize in Literature. He is known for writing about life and fate of Don Cossacks during Russian revolution, Civil War and collectivization, primarily the famous *And Quiet Flows the Don*.

Hi bobbym,

The solutions #5149 and #5150 are correct. Stupendous!

#5151. If the perimeter of a rectangle and square, each is equal to 80 centimeters and the difference of their areas is 100 square centimeters, find the sides of the rectangle.

#5152. The cost of fencing a square field @ $20 per meter is $10,800. How much will it cost to lay a three meter wide pavement along the fencing inside the field @ $50 per square meter?

Hi bobbym and Maburo,

Splendid, Maburo!

#1881. Find the Greatest Common Divisor of

.