S = x cos θ , with x = ( 2.0 ± 0.2 ) cm and θ = ( 53 ± 2 ) ∘ . Find nominal S in cm to two significant figures.

S = x cos θ . S = 2.0 cos 5 3 ∘ = 1.2036 … cm . To two significant figures, S = 1.2 cm .

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PhysicsErrorMiscellaneousMedium2 minQB

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$S = x cos θ$ , with $x = (2.0 \pm 0.2) cm$ and $θ = (53 \pm 2)^{\circ}$ . Find nominal S in cm to two significant figures.

Answer:

1.20

Solution:

$S = x cos θ$ .

$S = 2.0 cos 5 3^{\circ} = 1.2036 \dots cm$ .

To two significant figures, $S = 1.2 cm$ .

Stream:JEESubject:PhysicsTopic:ErrorSubtopic:Miscellaneous

⏱ 2mℹ️ Source: QB

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