Physics 1603 Exam Chapter 1 Review 211581 [2023]

A rectangular airstrip measures 30.90 m by 290 m, with the width measured more accurately than the length. Find the area (in m2), taking into account significant figures. - -A= LW = (290 m)(30.90 m) (rounded to two significant figures) -Carry out the following arithmetic operations. (Enter your answers to the correct number of significant figures.) (a) the sum of the measured values 521, 38.2, 0.90, and 9.0 (b) the product 0.0052 469.9 (c) the product 19.10 π - -(a) for summation and subtractions, your answer should have sig figs equal to the number with the least decimal places (b) for multiplication and division your answer should have equal to that of the number with the least sig figs (c) same as b -If a car is traveling at a speed of 28.0 m/s, is the driver exceeding the speed limit of 55.0 mi/h? - -(mi x m) / (h x s) -Repeat the conversion, using the relationship 1.00 m/s = 2.24 mi/h. Why is the answer slightly different? - -Using the conversion factor fails to keep extra digits until the final answer. -(a) The Cartesian coordinates of a point in the xy-plane are (x, y) = (−3.50 m, −2.50 m), as shown in the figure. Find the polar coordinates of this point. (b) Convert (r, θ) = (5.00 m, 37.0°) to rectangular coordinates. - -(a) r = √(x^2 + y^2) θ=tan^-1 (y/x) *add 180˚ if in the 2 or 3 quadrant (b) x = rcos θ y = rsin θ -Starting with the answers to part (b), work backwards