Jim stands beside a wide river and wonders how wide it is. He spots a large rock on the bank directly across from him. He then walks upstream 65 strides and judges that the angle between him and the rock, which he can still see, is now at an angle of 30° downstream (Fig. 1–20). Jim measures his stride 30° ! to be about 0.8 m long. Estimate the width of the river. FIGURE 1-20 Problem 54. 65 Strides

Jim stands beside a wide river and wonders how wide it is. He spots a large rock on the bank directly across from him. He then walks upstream 65 strides and judges that the angle between him and the rock, which he can still see, is now at an angle of 30° downstream (Fig. 1–20). Jim measures his stride 30° ! to be about 0.8 m long. Estimate the width of the river. FIGURE 1-20 Problem 54. 65 Strides

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

A rectangle airstrip measures 32.10 m by 280 m, with the width measured more accurately than the length. find the area (in m^2), taking into account significant figures
1-9. For the two vectors A = i + 2j – k, B = -2i + 3j + k find (a) A – B and |A – B| (b) component of B along A (d) A X B (c) angle between A and B (e) (A – B) × (A + B)
Perform these operations in scientific notation with the appropriate number of significant figure 2.80*10-5 km + 1.14*105 cm.
How many significant figures are there in (a) 0.0210, (b) 5.060, (c) 7.10 * 10-4,(d) 1.0 * 105?
A bear, searching for honey wanders 30 meters south, then 15 meters west. Frustrated, he wanders another 14 meters north and then 5 meters east. Calculate the magnitude of bear's displacement. Round the answer to three significant figures.
Estimate the order of magnitude of the length, in meters, of each of the following.
A new landowner has a triangular piece of flat land she wishes to fence. Starting at the west corner, she measures the first side to be 84 m long and the next to be 102 m. These sides are represented as displacement vectors A and B in the figure. She then calculates the length of the third side C. What is her result (in meters)?