SCIENCE
PHYSICAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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4.5 x 103
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4.5 x 104
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4.5 x 10-4
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4.5 x 105
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Detailed explanation-1: -This can also be expressed as 4.5 × 10^4, using the caret symbol, or as 4.5e+4, which is called 45000 in e-notation, further discussed in the section ahead.
Detailed explanation-2: -Hence in scientific notation 405, 000=4.05×105 (note that as we have moved decimal one point to right we are multiplying by 105 to compensate for division by 105 due to shifting of decimal poimt.
Detailed explanation-3: -Answer and Explanation: 4.5 written in scientific notation is 4.5×100 4.5 × 10 0 . To convert 4.5 to scientific notation, a special exponent of 10 is required.
Detailed explanation-4: -To write 0.00045 in scientific notation, write 4.5 x 10-4 The expression “4.5 x 10-4” is saying, “write 4.5 and move the decimal place four places to the left giving 0.00045.” Or you can think of it as saying 4.5 / 104 or 4.5 / 10000.