A5.0-g egg falls from a 90-cm-high counter onto the floor and breaks. what impulse is exerted by the floor on the egg?

0.021 kgm/s

Explanation:

using energy

change potential energy of the egg = change in kinetic energy of the egg

mgh = 1/2 mv² m in kg, h in meters

5.0g = 5.0/1000 kg= 0.005 kg

90 cm = 90 / 100 = 0.9 m

cancel m on both side

gh = 1/2 v²

make v subject of the formula

v = √2gh = √2×9.81×0.9 = √17.658 = 4.2 m/s that is the velocity of the egg on impact with floor and the initial velocity of the egg is zero.

impulse = m × Δv = 0.005 × 4.2 = 0.021 kgm/s

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.