Physics, 16.08.2019 08:10 gabrielar80
The time, t, required to drive a fixed distance varies inversely as the speed, r. it takes 3 hr at a speed of 14 km/h to drive a fixed distance. how long will it take to drive the same distance at a speed of 23 km/h?
Answers: 2
Physics, 21.06.2019 21:00
50 g of ice at 0°c is dropped in a beaker containing 100 g of water at 0°c. what will be the contents of the beaker after 5 hours? assume that the room temperature is 0°c.
Answers: 1
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 08:30
What properties of a moving object are used in determining the object's energy of motion
Answers: 2
The time, t, required to drive a fixed distance varies inversely as the speed, r. it takes 3 hr at a...
English, 17.06.2021 14:00
Mathematics, 17.06.2021 14:00
English, 17.06.2021 14:00
Mathematics, 17.06.2021 14:00
Computers and Technology, 17.06.2021 14:00
Mathematics, 17.06.2021 14:00
Mathematics, 17.06.2021 14:00
Mathematics, 17.06.2021 14:00