Physics, 14.12.2019 04:31, MicarriHarris6122
the teacher shared a demonstration with the same students. she begin by standing on a desk, holding a book and an open piece of paper in the air, away from her body.. she asked her students: "which will hit the ground first if i drop them? " based on the previous data, the students answered that they would hit the ground at the same time. when she dropped them, the book hit the ground first. next she crumpled up the paper and repeated the experiment.
elaborate on the two paper drops. was there different results? why?
a) no. in both cases, the book dropped faster than the paper because it had so much more mass.
b) yes. the crumpled paper dropped at the same rate as the book; the flat sheet did not due to air resistance.
c) in both cases the paper fell at the same rate because in both cases the air resistance and the masses were the same.
d) yes there was a difference in the rate at which the papers fell. the crumpled paper had the same air resistance as the book so they fell at the same rate.
Answers: 1
Physics, 22.06.2019 16:00, Andrebutrus
The field between two charged parallel plates is kept constant. if the two plates are brought closer together, the potential difference between the two plates either a) decrease b) does not change c) increase?
Answers: 3
Physics, 23.06.2019 00:50, Madisonaubrey22
A980-kg sports car collides into the rear end of a 2300-kg suv stopped at a red light. the bumpers lock, the brakes are locked, and the two cars skid forward 2.6m before stopping. the police officer, estimating the coefficient of kinetic friction between tires and road to be 0.80, calculates the speed of the sports car at impact. what was that speed?
Answers: 3
Physics, 23.06.2019 05:00, oclexieaocovtg07
What is the percent yield of titanium (iv0 oxide, if 10.2 are formed when 25.7g of titanium (iv0 chloride react?
Answers: 3
the teacher shared a demonstration with the same students. she begin by standing on a desk, holding...
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