A teacher sends her students on a treasure hunt. She gives the following instructions: 1. Walk 300 m north 2. Walk 400 m northwest 3. Walk 700 m east-southeast and the treasure is buried there
As all the other students walk off following the instructions, Jane physics student quickly adds the displacements and walks in a straight line to find the treasure. How far and in what direction does Jane need to walk? A) 187 m in a direction 67.3° north of east
B) 481 m in a direction 40.9° north of east
C) 399 m in a direction 52.5° north of east
D) 284 m in a direction 28.2° west of north
E) The treasure position cannot be reached in one straight walk.
B
You might also like to view...
If a photon produces an electron-positron pair and one other particle, the other particle may be a(n)
a. muon. b. antineutrino. c. neutrino. d. photon.
Two flat rectangular mirrors are set edge to edge and placed perpendicular to a flat nonreflecting surface. A light ray that reflects from mirror 1 at angle ?M 1 then strikes the second mirror and reflects at ?M 2 such that the angle between the ray reaching mirror 1 and the ray leaving mirror 2 is 180°. The angle between the two mirrors is a. 0°
b. 45°. c. 90°. d. 150°. e. 235°.
Which of the following is ranked 7 on the Mohs scale?
a. Talc b. Gypsum c. Diamond d. Quartz
A string is strung horizontally with a fixed tension. A wave of frequency 100 Hz is sent along the string, and it has a wave speed of 100 m/s. Then a second wave, one of frequency 200 Hz, is sent along the string. What is the wave speed of the second wave?
a. 25.0 m/s c. 70.7 m/s b. 50.0 m/s d. 100 m/s