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Luricela
Questions (12)
A flute is designed to play middle C (262 Hz) as the fundamental frequency when all the holes are covered. The length of the
0 answers
812 views
A) What is the intensity of sound at 148 dB? Units: W/m^2. I found this to be 630.9573445 using Io*10^B/10 in which B= 148 dB.
B)
2 answers
620 views
The length of a simple pendulum is 0.72 m, the pendulum bob has a mass of 305 grams, and it is released at an angle of 10° to
2 answers
2,616 views
An athlete whirls a 7.50-kg hammer tied to the end of a 1.1-m chain in a horizontal circle. The hammer moves at the rate of 1.3
5 answers
3,019 views
Two students on roller skates stand face-to-face, then push each other away. One student has a mass of 94 kg, the other 65 kg.
1 answer
1,436 views
A sled is initially given a shove up a frictionless 24.0° incline. It reaches a maximum vertical height 1.10 m higher than
1 answer
906 views
A sled is initially given a shove up a frictionless 24.0° incline. It reaches a maximum vertical height 1.10 m higher than
2 answers
912 views
Squaw Valley ski area in California claims that its lifts can move 48700 people per hour. If the average lift carries people
2 answers
3,867 views
A grocery cart with a mass of 18 kg is pushed at constant speed along an aisle by a force F = 12 N. The applied force acts at a
2 answers
1,274 views
A car does 6.0 104 J of work in traveling 2.6 km at constant speed. What was the average retarding force (from all sources)
3 answers
518 views
A 74.0 kg firefighter climbs a flight of stairs 12.0 m high. How much work is required?
4 answers
1,580 views
(a) What is the minimum work needed to push a 1150 kg car 240 m up a 17.5° incline with zero friction?
(b) What is the minimum
2 answers
785 views
Answers (7)
The Io i used was (1*10^-12) for A and (1*10^-10) for B. That was according to my physics book. I got A correct with 630.9573445 W/m^2.
Thank You drwls :) we did get a formula for frequncy similar to the one you gave me but the one i had didn't work. Once again Thank you for your help :)
no its just that this is in revolutions per second (goes around the whole circle) when it should be redious per second. most questions just give it in seconds so it would be correct the other way (unless of course it is given in revolutions per second like
Acctually i just found the answer for the acceleration, its similar to what you said except that you don't square it.The tension is (mass)(acceleration).
If you type this into google it will lead you to a website that explains it better. If you consider a pyramid of numbers, you may get confusing results, ... The best approach is to use pyramids of biomass, which include the total mass of living ... an
i am trying.i actually answered one of my own questions earlier after looking further into class notes.sorry if it seemed like im using it to harvest ansewrs.i just have avery large assignment.n these are the few that i didn't get.and only needed hints as
W=Force x displacement x cos of the angle. W=(mg)(d)(cos angle) W=(74 x 9.8)(12)(cos 0) W=(725.2)(12)(1) W=8702.4 J
