Physics, 17.03.2020 03:15 Jasten

How much heat is needed to raise the temperature of 1 kg of iron from 25°C to 30°C?

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Physics, 21.06.2019 16:10, dondre54

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Physics, 22.06.2019 11:20, loganfreeman04

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Physics, 22.06.2019 17:40, sosaucyy

Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.