Solve with due regards to significant figures: ( 4.0 × 10 − 4 − 2.5 × 10 − 6 ) . Give the answer in units of 10 − 4 .

( 4.0 × 10 − 4 ) − ( 0.025 × 10 − 4 ) = 3.975 × 10 − 4 The least accurate term is known to 0.1 × 10 − 4 , so the result is rounded to one decimal place in units of 10 − 4 : 4.0 × 10 − 4 .

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Physics - Unit & Dimension Question with Solution | TestHub

PhysicsUnit & DimensionMiscellaneousMedium2 minQB

PhysicsMediumnumerical

Solve with due regards to significant figures: $(4.0 \times 10^{- 4} - 2.5 \times 10^{- 6})$ . Give the answer in units of $10^{- 4}$ .

Answer:

4.00

Solution:

$(4.0 \times 10^{- 4}) - (0.025 \times 10^{- 4})$

$= 3.975 \times 10^{- 4}$

The least accurate term is known to $0.1 \times 10^{- 4}$ , so the result is rounded to one decimal place in units of $10^{- 4}$ : $4.0 \times 10^{- 4}$ .

Subject:PhysicsTopic:Unit & DimensionSubtopic:Miscellaneous

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