Physics, 21.08.2020 22:01 jakhunter354
3] a student has 500 identical, rectangular sheets of paper. the mass of 1.0 square m of the paper is 0.080kg. a] using a meter rule, she measures the length of one sheet of paper and it's width. the length is 0.300m and the width is 0.210m. [i] calculate the mass of one sheet of paper. [ii] the student makes a single pile of the 500 sheets of paper. with a meter rule, she measures the height of the pile. the height of the pile is 0.048m calculate the density of the paper. b] a second student has only 5 sheets of the same type of paper. suggest how this student determines the density of the paper to a similar accuracy. additional apparatus may be used.
Answers: 2
Physics, 22.06.2019 18:00
Gabby calls her cousin who lives in a different state and tells her to turn her radio to channel 98.7 so they can listen to their favorite song that is playing. her cousin turns her radio to 98.7, but does not hear the same song gabby hears. which most likely explains why?
Answers: 1
Physics, 22.06.2019 20:00
In an old-fashioned amusement park ride, passengers stand inside a 3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backs against the wall. the cylinder begins to rotate about a vertical axis. then the floor on which the passengers are standing suddenly drops away! if all goes well, the passengers will βstickβ to the wall and not slide. clothing has a static coefficient of friction against steel in the range 0.60 to 1.0 and a kinetic coefficient in the range 0.40 to 0.70. part a what is the minimum rotational frequency, in rpm, for which the ride is safe? express your answer using two significant figures. f f = rpm
Answers: 1
Physics, 22.06.2019 22:30
The drag force, fd, imposed by the surrounding air on a vehicle moving with velocity v is given by fd = cdaΟv 2/2 where cd is a constant called the drag coefficient, a is the projected frontal area of the vehicle, and Ο is the air density. an automobile is moving at v = 80 kilometers per hour with cd = 0.28, a = 2.3 m2, and Ο = 1.2 kg/m3.
Answers: 2
3] a student has 500 identical, rectangular sheets of paper. the mass of 1.0 square m of the paper i...
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