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Quantitative Versus Qualitative
Most experiments in physics require the observations made to be quantitative rather than qualitative. If observations are only descriptive or qualitative, they are likely to be imprecise and could cause disagreements between experimenters. For example, scientists cannot merely say that an object i..
Sizes of cations and anions versus corresponding atoms
Anions are larger than the neutral atoms. The effective nuclear charge decreases and the electron cloud expands. Cl - > Cl Cations are smaller than the neutral atom because the effective nuclear charge increases. Na > Na..
Jimmy is playing a chess game with Chris. Which of the following is a ..
Jimmy is playing a chess game with Chris. Which of the following is a possible outcome? => Jimmy winning the game or Playing a chess game or Chris winning the game or Both A & C..
Computed Tomography
In conventional X-rays an overlap of organs occurs and often difficult to interpret. These diagnostic difficulties have been eliminated by the use of an X-ray technique called computer Tomography (CT) scaning or computerised Axial Tomography (CAT) Scannin..
36 games were played at a chess tournament with each contestant playin..
36 games were played at a chess tournament with each contestant playing once against each of the contestants. How many participants were there? => 18 or 9 or 12 or 36 or 8..
Compute:
Compute: => 48 or 36 or 46 or 38..
Modems with reference to computers
A modem (a modulator/demodulator) lets you connect your computer to a standard telephone line so that you can transmit and receive electronically transmitted dat..
The cost of a computer decreases from $800 to $720. What is the percen..
The cost of a computer decreases from $800 to $720. What is the percent of decrease in the cost of the computer? => 10% or 12% or 15% or 13%..
An office has 3 floors. The first floor has 47 computers, the second f..
An office has 3 floors. The first floor has 47 computers, the second floor has 45 computers, and the third floor has 43 computers. Find the total number of computers in the office. => 132 or 125 or 135 or 138..
In a computer-learning institute, there are 7 computers in each room. ..
In a computer-learning institute, there are 7 computers in each room. How many rooms are there in the institute if there are 63 computers altogether? => 8 or 4 or 10 or 9..
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