A box proceeds along the x-axis and the figure below shows a record of its velocity as a function of time. Every gridline along the vertical axis corresponds to 3.00 m/s and each gridline along the horizontal axis corresponds to 4.00 s. (Enter your answers in m/s2. Indicate the direction with the signs of your answers. Note that t = 0 at the intersection of the axes.) (a) Determine the average acceleration of the box in the time interval t = 0 to t = 20.0 s (b) Determine the average acceleration of the box in the time interval t = 20.0 s to t = 60.0 s (c) Determine the average acceleration of the box in the time interval t = 0 to t = 80.0 s
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Physics, 21.06.2019 20:20
Copper has free electrons per cubic meter. a 71.0-cm length of 12-gauge copper wire that is 2.05 mm in diameter carries 4.85 a of current. (a) how much time does it take for an electron to travel the length of the wire? (b) repeat part (a) for 6-gauge copper wire (diameter 4.12 mm) of the same length that carries the same current. (c) generally speaking, how does changing the diameter of a wire that carries a given amount of current affect the drift velocity of the electrons in the wire?
Answers: 2
Physics, 21.06.2019 23:30
In which of the following cases is work being done on an object? question 2 options: pulling a trailer up a hill carrying a box down a corridor suspending a heavy weight with a strong chain pushing against a locked door
Answers: 2
A box proceeds along the x-axis and the figure below shows a record of its velocity as a function of...
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