Physics, 16.12.2021 02:10 zafarm2oxgpmx
An airplane flies in the same direction as the wind. The velocity of the airplane is:
a) The airplane's velocity relative to the air minus the wind's velocity
b) The airplane's velocity relative to the air plus wind's velocity relative to the ground
C) The airplane's velocity relative to the ground minus the wind's velocity
d) None of the above
Answers: 1
Physics, 22.06.2019 00:30, Solany6426
Part f - example: finding two forces (part i) two dimensional dynamics often involves solving for two unknown quantities in two separate equations describing the total force. the block in (figure 1) has a mass m=10kg and is being pulled by a force f on a table with coefficient of static friction îľs=0.3. four forces act on it: the applied force f (directed î¸=30â above the horizontal). the force of gravity fg=mg (directly down, where g=9.8m/s2). the normal force n (directly up). the force of static friction fs (directly left, opposing any potential motion). if we want to find the size of the force necessary to just barely overcome static friction (in which case fs=îľsn), we use the condition that the sum of the forces in both directions must be 0. using some basic trigonometry, we can write this condition out for the forces in both the horizontal and vertical directions, respectively, as: fcosî¸â’îľsn=0 fsinî¸+nâ’mg=0 in order to find the magnitude of force f, we have to solve a system of two equations with both f and the normal force n unknown. use the methods we have learned to find an expression for f in terms of m, g, î¸, and îľs (no n).
Answers: 2
Physics, 22.06.2019 12:20, luella614ox1zum
The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.
Answers: 2
Physics, 22.06.2019 14:30, makylahoyle
You can decrease the resistance of a length of wire by
Answers: 2
An airplane flies in the same direction as the wind. The velocity of the airplane is:
a) The airpl...