Question One: True or False. Correct the false statements. (6*15 90 Points) 11 T

Question

Question One: True or False. Correct the false statements. (6*15 90 Points) 11 There is only one system of measurement 1.2 Units of measurements are essential to produce accessible result of measurement by different users and devices in different places and times 1.3 The dimensions of acceleration are: ML T 1.4 75,642,000,000 in scientific notation is expressed as: 0.75642 E11 1.5 25.21, 25.91, 25.87, and 25.47 are of high accuracy and less precision. 1.6 29.3, 28.9, 21.8, and 25.47 are of high precision and less accuracy ion Two (30 Points) Knowing that 1 m 100 cm & 1 kg 1000 g &1 hr 3600s, convert Kg.m2 hr2 to g.cm2s2 Question Three: Choose the correct answer(s): 31 9,056,000,000,000 Hz can be expressed in SI prefixes as: 3.2 00000239 in scientific notation is expressed as 3.3 On measuring a rod of length 17 cm, the set of readings 13.5, 20.2, 9.1, and 11 are: (3*10 30 Points) d. 9.056 T d. 2.39 E-5 a. 9,056,000 M b. 9.056 K M C.9 9.056 k G a. 0.00 239 E-2 b. 0.239 E-4 c. 2.39 E-6 a. Of high accuracy and low precision c. Of both high accuracy and precision. b. Of high precision and low accuracy c.Of neither accuracy nor precision. Question Four Change the given quantities to required forms (6 10 60 points) 5.0 x 10m. to nano metre 4.2 1x 10 s. to prefix format 4.3 12300000 Hz. to GHz 4.4 236000 J to MJ 4.5 1 M W to KW 4.6 1nm into pm.

Explanation / Answer

DO NOT POST THESE MANY QUESTIONS AT ONCE.........ABIDE BY THE RULES.

1.1 No, there are many system of measurments like S.I, CGS, MKS etc

1.2) Yes, that's true.

1.3) acceleration is m/s2. Therefore, it's dimensional formula should be LT-2. Therefore, given sentence is false.

1.4) True

1.5) more the numbers after decimal place, more is the precision and less is the accuracy.

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Question two -

(1000).(100)2 (3600)2 = 1.296e14 gcm2s2

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