In the Snellen visual acuity chart, the letters in the 20/40 line subtend an angle of 3 milliradians with respect to the eye when viewed at a distance of 6 meters ( i.e., approximately 20 feet ). Using the small-angle approximation, calculate the actual height of the 20/40 letter, in units of mm?

Q: What is the value of n+r/(2.000) 2, written with the correct number of significant figures? O…

A: To determine: The value of π+π2.0002

Q: ALCULATE CALCULATE       Mass Density ρ= m/V (grams/cm^3)  Volume , V=(π*(d^2)* t)/4 (cm^3)

A: Given,   Relative Uncertainty in mass δm/m (%) Relative Uncertainty in Diameter δd/d (%) Relative…

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A: The smaller unit of distance is meter, millimeter, micrometer, nanometer, picometer, etc. The larger…

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A:

Q: e absolute uncertainty

A: Absolute uncertainty in x,y,z is ∆x,∆y,∆z

Q: Spacing in this book was generally done in units of points and picas: 12 points = 1 pica, and 6…

A: Given:  misplaced = 0.80 cm  12 points = 1 pica, 6 pica = 1 inch.  1 inch = 2.54 cm

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A: the uncertainty in position is,

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A: Using dimension analysis,   Dimension of L.H.S = Dimension of R.H.S

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A:

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A: Bbb…

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A: We are suppose to answer only three sub-parts in a question. Kindly repost other sub-parts as…

Q: Problem 12: In this problem, the symbols M, L, and T represent the dimensions mass, length, and…

A:

Q: Consider the equation 4000/400 = 10.0. Assuming the number of significant figures in the answer is…

A: To determine: Find the number of significant figures in 4000 and 400.   Given: number, 4000 can be…

Q: 3. A physicist needs to estimate the density of a cube (all sides of the cube have equal length).…

A: The density is given byD=M/L3the data given, the massμM=1σM=0.02the mean value of length and…

Q: The radius of sphere 2 is triple the radius of sphere 1. What is the ratio of the areas, A2/A1?

A: Let us use subscript 1 for smaller sphere and subscript 2 for largersphere .Then , according to…

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A:

Q: Given a set of length measurements: 62.1, 62.5, 61.7, 62.6, 62.7, 61.9 cm. Find the standard error…

A: The formula for ​Standard Deviation: Standard Deviation, σ=∑i=1n(xi-x)2(n-1)​​where: xi = Value of…

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Q: 2.1*10^53 pg = ...? Tg

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Q: (a) If your speedometer has an uncertainty of 2.0 km/h at a speed of 90 km/h, what is the percent…

A: Given Uncertainty speed range δA = 2.0 km/hr Speed A                                = 90 km/hr

Q: (a) A car speedometer has a 6% uncertainty. What is the range of possible speeds (in km/h) when it…

A:

Q: Given that the Diameter of Earth is about 7200 miles, how many Earths would fit across the Sun?

A: Hey, there are multiple questions posted; we are authorized to answer one question at a time, since…

Q: The micrometer (1 mm) is often called the micron. (a) How SSM many microns make up 1.0 km? (b) What…

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Q: What is the area, and its approximate uncertainty, of a circle of radius 3.1 × 104 cm?

A: Given: Radius of circle=R=3.1×104 In this Question, we would Assume an uncertainty in the radius of…