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The phases of the moon as we see from the Earth are due to changing relative positions of the sun, the earth and the moon. Which of the following statements is true. A. on a full moon day, the earth comes between the sun and the moon B. on a new moon day, the moon is in between the earth and the sun C. on a full moon day, the moon is in between the earth and the sun D. on a new moon day, the earth is between the sun and the moon? E. on a new moon day, the sun is between the moon and the earth
Percentage of silica in good brick earth should be about _________
Three bags whose volumes are in the ratio of 3 : 5 : 7 are full of lime and silica. In the 1st bag the ratio of lime and silica is 5 : 1, in 2nd bag the ratio is 7 : 3 and in the 3rd bag the ratio is 3 : 4. All the three mixtures are mixed in another bag. Find the ratio of lime and silica in the final mixture.
The percentage of alumina in a good brick earth lies between
The furnace of a boiler is laid from fire clay brick with outside lagging from the plate steel, the distance between the two is quite small compared with the size of the furnace. The brick setting is at an average temperature of 365 K whilst the steel lagging is at 290 K. Calculate the radiant heat flux. Assume the following emissivity values For brick = 0.85 For steel = 0.65
পৃথিবী পৃষ্ঠে একটি ইটের ওজন 81 N. পৃথিবীর অর্ধেক বাসার্ধের সমান উচ্চতায় এবং অর্ধেক বাসার্ধের সমান গভীরতায় ইউটির উপরে পৃথিবীর অভিকর্ষ বলের মান কত হবে?(A brick weighs 81 N on the surface of the earth. What are the earth's gravitational forces act on it at a height of half of the radius of the earth and at a depth of half of the radius of earth, respectively?)
S1:The path of Venus lies inside the path of the Earth.
P :When at its farthest from the Earth, Venus is 160 million away
Q :With such a wide range between its greatest and leat distances it is natural that at sometimes Venus appears much brighter than at others.
R :No other body ever comes so near the Earth, with the exception of the Moon and occasional comet or asteroid.
S :When Venus is at its nearest to the earth it is only 26 million miles away.
S6:When at its brightest, it is easily seen with the naked eye in broad daylight.

The Proper sequence should be:
S1: The path of Venus lies inside the path of the Earth.
P: When at its farthest from the Earth, Venus is 160 million miles away.
Q: With such a wide range between its greatest and least distances it is natural that at sometimes Venus appears much brighter than others.
R: No other body ever comes so near the Earth, with the exception of the Moon and an occasional comet or asteroid.
S: When Venus is at its nearest to the Earth, it is only 26 million miles away.
S6: When at its brightest, it is easily seen with the naked aye in broad daylight.

The Proper sequence should be:
Which of the following is the constituent of good brick earth whose excess census the raw brick shrink and warp during drying and burning?
The solid brick shown is made of small square shaped bricks of side 1. when the large brick is disassembled into its component small bricks. the total surface area of all the small bricks is how much greater than the surface area of the large brick?