Relative Velocity: Alicia intends to swim to a point straight across a 100 m wide river with a current that flows at 1.2 m/s. She can swim 2.5 m/s in still water. At what angle, measured from the upstream direction, must she swim upstream to achieve her goal?
Fill in the blank(s) with the appropriate word(s).
61°
You might also like to view...
Tycho Brahe's contribution to Kepler's Laws of Planetary Motion were
A) his detailed and accurate observations of the planet's position. B) his observations of Jupiter's moons. C) a mathematical explanation of epicycles. D) a precise lunar calendar. E) the correct explanation of lunar phases.
Which of the following best describes the nature and origin of the atmospheres of the Moon and Mercury?
A) They have thin tropospheres only, with gas coming from evaporation and sublimation. B) They have thin exospheres only, with gas coming from impacts of subatomic particles and photons. C) They have only small amounts of gas, all of which is leftover from outgassing long ago. D) They have very thin atmospheres produced by outgassing, but still have the layers of a troposphere, thermosphere, and exosphere.
The Sun lives in which component of the Milky Way?
A) a globular cluster B) the disk C) the halo D) the bulge
System 1 is 3.1 moles of a monatomic ideal gas held at a constant volume of 2.70 L as it undergoes a temperature increase. System 2 is 3.1 moles of a diatomic ideal gas held at a constant volume of 2.7 L as it undergoes a temperature increase equal to the temperature increase of System 1 . The pressure increase for system 1 is ?P1 and for System 2 is ?P2 during the temperature increases. What
is the ratio of ?P1/?P2? a. 1.0 b. 0.60 c. 1.7 d. 2.5 e. 4.5