Physics, 25.03.2021 02:30 KenzieSparkles
Is table salt an element or a compound? Explain.
Describe the physical property of table salt.
How do the properties of table salt compare with those of sodium and chlorine?
Answers: 3
Physics, 21.06.2019 16:00
Suppose you use a machine that gives you a mechanical advantage of 2 to achieve an output force of 30newtons what must the input force be
Answers: 3
Physics, 22.06.2019 00:30
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 01:50
Aregion of space in which a measurable gravitational force is indicated by the force exerted on a test mass is called
Answers: 1
Is table salt an element or a compound? Explain.
Describe the physical property of table salt.
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