An object moves in the eastward direction at constant speed. A net force directed northward acts on the object for 5.0 s. At the end of the 5.0-second period, the net force drops to zero newtons. Which one of the following statements is necessarily true?A. The direction of the object's acceleration depends on how fast the object was initially moving. B. The magnitude of the object's acceleration depends on how fast the object was initially moving. C. The object will be moving eastward when the force drops to zero newtons. D. The final velocity of the object will be directed north of east. E. The change in the velocity of the object will be directed north of west.
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Physics, 21.06.2019 21:30
Write the equation for momentum, first using symbols for the variables, then using words for the variables.
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Physics, 21.06.2019 23:30
The pressure, volume, and temperature of a mole of an ideal gas are related by the equation pv = 8.31t, where p is measured in kilopascals, v in liters, and t in kelvins. use differentials to find the approximate change in the pressure if the volume increases from 14 l to 14.6 l and the temperature decreases from 375 k to 370 k. (round the answer to two decimal places.)
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Physics, 21.06.2019 23:30
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Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)
Answers: 1
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