General Quiz

Jai Ganesh · 2015-09-25 20:11:16

Hi bobbym,

The Answer #5542 is correct! Excellent!

#5544. The gravitational constant, approximately

and denoted by letter G, is an empirical physical constant involved in the calculation(s) of gravitational force between two bodies. It usually appears in Sir Isaac Newton's law of universal gravitation, and in Albert Einstein's general theory of relativity. It is also known as the universal gravitational constant,
According to the law of universal gravitation, the attractive force (F) between two bodies is directly proportional to the product of their masses (m1 and m2), and inversely proportional to the square of the distance, r, (inverse-square law) between them:

The constant of proportionality, G, is the gravitational constant.
State the dimensions of G in terms of fundamental units.

#5545. What is Dimensional Formula of Coefficient of viscosity?

bobbym · 2015-09-26 15:58:23

Hi;

Jai Ganesh · 2015-09-26 18:34:20

Hi bobbym,

#5546. Name the mineral form of silver chloride. t occurs as a secondary mineral phase in the oxidation of silver mineral deposits. It crystallizes in the isometric - hexoctahedral crystal class. Typically massive to columnar in occurrence it also has been found as colorless to variably yellow cubic crystals. The color changes to brown or purple on exposure to light. It is quite soft with a Mohs hardness of 1 to 2 and dense with a specific gravity of 5.55. It is also known as cerargyrite and, when weathered by desert air, as horn silver. It is water-insoluble.

#5547. Name an alloy —mainly of magnesium with small amounts of aluminium and other metals - used in cladding unenriched uranium metal fuel with a non-oxidising covering to contain fission products in nuclear reactors. This material has the advantage of a low neutron capture cross section, but has two major disadvantages:
(i) It limits the maximum temperature (to about 360 Celsius), and hence the thermal efficiency, of the plant.
(ii) It reacts with water, preventing long-term storage of spent fuel under water in spent fuel pools.

bobbym · 2015-09-26 22:30:52

Hi;

Jai Ganesh · 2015-09-26 23:12:07

H bobbym,

The Answer #5547 is correct! Excellent, bobbym!

#5548. Name the nation bordered by China and Russia, is known for its vast, rugged expanses and its nomadic people. It is the 19th largest and one of the most sparsely populated independent countries in the world, with a population of around 3 million people. It is also the world's second-largest landlocked country. Area: 1,565,000 km² (603,909 sq mi).

#5549. Name the which extends some 1,100 km (680 mi) from the Asian mainland. This mountainous peninsula is flanked by the Yellow Sea to the west, and Sea of Japan (East Sea) to the east. The country, including all its islands, lies between latitudes 33° and 39°N, and longitudes 124° and 130°E. Its total area is 100,032 square kilometres (38,622.57 sq mi).

bobbym · 2015-09-27 00:04:13

Hi;

Jai Ganesh · 2015-09-27 16:36:18

Hi bobbym,

and

The Answers ,#5548 and #5549, are both correct! Magnificent!

#5550. Large numbers have an intellectual fascination and are of mathematical interest, and giving them names is one of the ways in which people try to conceptualize and understand them. One of the first examples of this is 'The Sand Reckoner', in which a Mathematician gave a system for naming large numbers. To do this, he called the numbers up to a myriad myriad (10^8) "first numbers" and called 10^8 itself the "unit of the second numbers". Multiples of this unit then became the second numbers, up to this unit taken a myriad myriad times, 10^8·10^8=10^{16}. This became the "unit of the third numbers", whose multiples were the third numbers, and so on. He then estimated the number of grains of sand that would be required to fill the known Universe, and found that it was no more than "one thousand myriad of the eighth numbers" (10^{63}). Name the Mathematician.

#5551. SI prefix denoting a factor of 10^15. Peta is also a town in Greece. The Battle of Peta took place near the town. Where is Peţa River?

bobbym · 2015-09-28 13:47:56

Hi;

Jai Ganesh · 2015-09-28 15:44:17

Hi bobbym,

The Answer #5550 (Archimedes of Syracuse) is correct! Good work!

#5552. Rivers of Japan are characterized by their relatively short lengths and considerably steep gradients due to the narrow and mountainous topography of the country. Name the longest river of Japan , which flows from Nagano to Niigata.
(The Tone has the largest watershed and serves water to more than 30 million inhabitants of Tokyo metropolitan area.)

#5553. Mount Ishikari is part of the Ishikari Mountains. On its slopes are the head waters of the Ishikari River. Where in in Japan is it located (Which part)?

bobbym · 2015-09-28 22:40:30

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Jai Ganesh · 2015-09-29 01:18:18

Hi bobbym,

#5554. Name the chemical compound : This colorless liquid has a characteristic pleasant almond-like odor. In fact, it is the primary component of bitter almond oil and can be extracted from a number of other natural sources. It was first extracted from bitter almonds in 1803 by the French pharmacist Martrès. In 1832 German chemists Friedrich Wöhler and Justus von Liebig first synthesized chemical. can be obtained by many processes. In the 1980s, an estimated 18 million kilograms were produced annually in Japan, Europe, and North America, a level that can be assumed to continue. Currently liquid phase chlorination and oxidation of toluene are the main routes.

# 5555. Name the Nobel Prize-winning French chemist (May 6, 1871 in Cherbourg - December 13, 1935 in Lyon). He was the son of a sail maker. After studying mathematics at Lyon he transferred to chemistry and discovered the synthetic reaction bearing his name in 1900. He became a professor at the University of Nancy in 1910 and was awarded the Nobel Prize in Chemistry in 1912. During World War I he studied chemical warfare agents, particularly the manufacture of phosgene and the detection of mustard gas. His counterpart on the German side was another Nobel Prize–winning Chemist, Fritz Haber. (Notable awards : Nobel Prize for Chemistry (1912)).

bobbym · 2015-09-29 01:22:50

Hi;

Jai Ganesh · 2015-09-29 09:45:15

Hi bobbym,

The Answer #5554 is correct! Good work!

#5556. Name the German chemist and significant contributor to both organic and inorganic chemistry (8 September 1848 – 8 August 1897). He is best known for inventing an apparatus for determining vapour densities, and for discovering thiophene, a heterocyclic compound. Synthesis of aromatic carboxylic acids from sulfonic acid and formates (1869). Nitroalkanes from alkyl iodides and silver nitrite (1872), used to distinguish 1°, 2°, 3° alcohols, the test known his name. Development of a method to distinguish primary, secondary and tertiary nitroalkanes (1875).
Starting with studying physical chemistry in 1876, he created a new method for determining gas density in 1878. This method allowed him to demonstrate how math oxide vapours corresponded to the formula As4O6, that mercury, zinc and cadmium yielded monatomic vapours, and that halogen molecules dissociated into atoms on heating, a phenomenon which he studied until his death. The apparatus accurately measures the volume of a volatilized substance from which the vapor density of the gas can be derived and also the relative mass.

#5557. Name the pH indicator frequently used in titrations because of its clear and distinct colour change. Because it changes colour at the pH of a midstrength acid, it is usually used in titrations for acids. Unlike a universal indicator, it does not have a full spectrum of colour change, but has a sharper end point. In a solution becoming less acidic, methyl orange moves from red to orange and finally to yellow with the reverse occurring for a solution increasing in acidity. The entire colour change occurs in acidic conditions.
Properties :
Chemical formula :

Molar mass: 327.33 g·mol−1
Density : 1.28 g/cm3, solid
Melting point : >300 °C (572 °F; 573 K)

bobbym · 2015-09-29 14:44:51

Hi;

Jai Ganesh · 2015-09-29 17:26:12

Hi bobbym,

The Answer #5557 is orrect! Good work!

#5558. The Sun is the star at the center of the Solar System and is by far the most important source of energy for life on Earth. It is a nearly perfect spherical ball of hot plasma, with internal convective motion that generates a magnetic field via a dynamo process. How many times is the Sun's diameter approximately that of Earth?

#5559. How many times is the Sun has a mass approximately that of Earth? (accounting for about 99.86% of the total mass of the Solar System.)

bobbym · 2015-09-29 19:46:53

Hi;

Jai Ganesh · 2015-09-29 22:05:58

Hi bobbym,

The Answers #5558 and #5559 are within acceptable range! Fairly good!

#5560. What is the Visual brightness (magnitude) of the Sun?

#5561. What is the Absolute magnitude of the Sun?

bobbym · 2015-09-30 02:41:19

Hi;

Jai Ganesh · 2015-09-30 06:57:29

Hi bobbym,

The Answer #5560 is correct! Good work!

#5562. State the Mean distance between Earth and Sun in kilometers (time takes = 8 min 19 seonds at light speed).

#5563. Fnd the Volume of Sun (In cubic kilometers), Mass (in kilograms), and Average density.

bobbym · 2015-09-30 08:05:26

Hi;

Jai Ganesh · 2015-09-30 11:19:23

Hi bobbym,

The Answers #5562 (perfect) and #5563 (partially) are correct! Excellent, bobbym!

#5564. Give the value of Escape velocity (from the surface) in kilometers per hour / meters per second.

#5565. Give the values of Temperature (Sun) in Kelvin : Center (modeled), Photosphere (effective), and Corona.

bobbym · 2015-10-01 18:57:08

Hi;

Jai Ganesh · 2015-10-01 21:56:01

Hi bobbym,

The Answer #5565 is 66% correct! Good work, bobbym!

#5566. The Sun is a G-type main-sequence star that comprises about 99.86% of the mass of the Solar System. What does 'G-type main-sequence star' signify?

#5567. The Sun is by far the brightest object in the sky, with an apparent magnitude of -26.74. Approximately, how many times is it brighter than the next brightest star, Sirius, which has an apparent magnitude of -1.46?

bobbym · 2015-10-02 06:02:14

Hi;

Jai Ganesh · 2015-10-02 10:43:30

Hi bobbym,

Both the Answers, #5566 ad #5567, are correct! Magnificent, bobbym!

#5568. The Sun is composed primarily of the chemical elements hydrogen and helium. What percentage do they account for of the mass of the Sun in the photosphere, respectively? (All heavier elements, called metals in astronomy, account for less than 2% of the mass, with oxygen (roughly 1% of the Sun's mass), carbon (0.3%), neon (0.2%), and iron (0.2%)).

#5569. Venus is the second planet from the Sun, orbiting it every 224.7 Earth days. It has no natural satellite. It is named after the Roman goddess of love and beauty. After the Moon, it is the brightest natural object in the night sky. What is value of peak value of apparent magnitude? (bright enough to cast shadows)

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