Physics, 17.10.2021 06:20 linnaefoos2183
50. You know that a sharp knife cuts better than a dull knife. Do you know why this is so? Defend your answer. 51. Which is more likely to hurt: being stepped on by a 100-kg man wearing flat shoes (Area = 100cm2) or being stepped on by a 50-kg woman wearing high heels (Area = 2 cm2)? Hint: p = F/A 52. Which do you suppose exerts more pressure on the grass: a 5000-kg elephant (feet Area 400 cm2) or a 50- kg lady standing on spike heels (heel Area = 4 cm2)? (Which will be more likely to make dents in a linoleum floor?) Approximate a rough calculation for each. 53. Why are persons who are confined to bed less likely to develop bedsores on their bodies if they rest on a waterbed rather than on an ordinary mattress?
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Physics, 21.06.2019 23:30
The velocity of car is 80.0 miles per hour. what is the velocity of car in meters per second? (1 km -0.621 miles) m/s
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Physics, 22.06.2019 10:30
Agroup of students were investigating the force of gravity. they began by dropping a foam ball from a height of 3 meters into a bucket of sand. the ball hit the sand in 0.306 seconds. they dropped additional balls of approximately the same diameter, but of different masses. here is the data they collected. based on this experiment and the collected data, what would their conclusion be?
Answers: 1
Physics, 22.06.2019 16:30
Select all the correct answers. which three statements about electromagnetic radiation are true?
Answers: 3
50. You know that a sharp knife cuts better than a dull knife. Do you know why this is so? Defend yo...
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