Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
\(h=90cm=0,9m\)
Áp suất tác dụng lên đáy thùng:
\(p=d\cdot h=0,9\cdot10000=9000Pa\)
Áp suất tại điểm cách đáy thùng 25cm=0,25m:
\(p'=d\cdot h'=10000\cdot\left(0,9-0,25\right)=6500Pa\)
\(h=80 cm =0,8m\)
\(l=20cm=0,2m\)
\(d=10000N/m^3\)
Giải:
- Áp suất tác dụng lên đáy thùng:
\(p=d.h=10000.0,8=800(N/m^2)\)
- Điểm đó cách mặt thoáng:
\(h'=h-l=0,8-0,2=0,6(m)\)
- Áp suất tại điểm đó:
\(p'=d.h'=10000.0,6=600(N/m^2)\)
TK
Đổi 80cm=0,8m; 20cm=0,2 m
áp suất tác dụng lên đáy thủng và một điểm cách đáy thùng 20cm là:
%3C%2Fmo%3E%3Cmo%3E%3D%3C%2Fmo%3E%3Cmn%3E6000%3C%2Fmn%3E%3Cmo%3E(%3C%2Fmo%3E%3Cmi%3EN%3C%2Fmi%3E%3Cmo%3E%2F%3C%2Fmo%3E%3Cmsup%3E%3Cmi%3Em%3C%2Fmi%3E%3Cmn%3E2%3C%2Fmn%3E%3C%2Fmsup%3E%3Cmo%3E)%3C%2Fmo%3E%3C%2Fmath%3E--%3E%3Cdefs%3E%3Cstyle%20type%3D%22text%2Fcss%22%3E%40font-face%7Bfont-family%3A'math1798b7b78de0855f6022dac8ee6'%3Bsrc%3Aurl(data%3Afont%2Ftruetype%3Bcharset%3Dutf-8%3Bbase64%2CAAEAAAAMAIAAAwBAT1MvMi7iBBMAAADMAAAATmNtYXDEvmKUAAABHAAAAFRjdnQgDVUNBwAAAXAAAAA6Z2x5ZoPi2VsAAAGsAAABqmhlYWQQC2qxAAADWAAAADZoaGVhCGsXSAAAA5AAAAAkaG10eE2rRkcAAAO0AAAAGGxvY2EAHTwYAAADzAAAABxtYXhwBT0FPgAAA%2BgAAAAgbmFtZaBxlY4AAAQIAAABn3Bvc3QB9wD6AAAFqAAAACBwcmVwa1uragAABcgAAAAUAAADSwGQAAUAAAQABAAAAAAABAAEAAAAAAAAAQEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACAgICAAAAAg1UADev96AAAD6ACWAAAAAAACAAEAAQAAABQAAwABAAAAFAAEAEAAAAAMAAgAAgAEACwALgAvAD0iEv%2F%2FAAAALAAuAC8APSIS%2F%2F%2F%2F1f%2FU%2F9T%2Fx93zAAEAAAAAAAAAAAAAAAAAAAFUAywAgAEAAFYAKgJYAh4BDgEsAiwAWgGAAoAAoADUAIAAAAAAAAAAKwBVAIAAqwDVAQABKwAHAAAAAgBVAAADAAOrAAMABwAAMxEhESUhESFVAqv9qwIA%2FgADq%2FxVVQMAAAEAVf9kANUAgAAKAAAzNTMVFAYHJz4BN1WALy8bHh4BgHo9URQpDjQxAAEAIAAAAKAAgAADAC8YAbAEELAD1LADELAC1LADELAAPLACELABPACwBBCwA9SwAxCwAjywABCwATwwMTczFSMggICAgAABAIAAAAIrA4AAAwAiGACxAwA%2FsQEC5DABsAQQsQMD9bECBeWwAdWxAAXlsQUD5gEzASMB1Vb%2BqlUDgPyAAAIAgADrAtUCFQADAAcAZRgBsAgQsAbUsAYQsAXUsAgQsAHUsAEQsADUsAYQsAc8sAUQsAQ8sAEQsAI8sAAQsAM8ALAIELAG1LAGELAH1LAHELAB1LABELAC1LAGELAFPLAHELAEPLABELAAPLACELADPDEwEyE1IR0BITWAAlX9qwJVAcBV1VVVAAEAgAFVAtUBqwADADAYAbAEELEAA%2FawAzyxAgf1sAE8sQUD5gCxAAATELEABuWxAAETELABPLEDBfWwAjwTIRUhgAJV%2FasBq1YAAAABAAAAAQAA1XjOQV8PPPUAAwQA%2F%2F%2F%2F%2F9Y6E3P%2F%2F%2F%2F%2F1joTcwAA%2FyAEgAOrAAAACgACAAEAAAAAAAEAAAPo%2F2oAABdwAAD%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%2F)format('truetype')%3Bfont-weight%3Anormal%3Bfont-style%3Anormal%3B%7D%40font-face%7Bfont-family%3A'round_brackets18549f92a457f2409'%3Bsrc%3Aurl(data%3Afont%2Ftruetype%3Bcharset%3Dutf-8%3Bbase64%2CAAEAAAAMAIAAAwBAT1MvMjwHLFQAAADMAAAATmNtYXDf7xCrAAABHAAAADxjdnQgBAkDLgAAAVgAAAASZ2x5ZmAOz2cAAAFsAAABJGhlYWQOKih8AAACkAAAADZoaGVhCvgVwgAAAsgAAAAkaG10eCA6AAIAAALsAAAADGxvY2EAAARLAAAC%2BAAAABBtYXhwBIgEWQAAAwgAAAAgbmFtZXHR30MAAAMoAAACOXBvc3QDogHPAAAFZAAAACBwcmVwupWEAAAABYQAAAAHAAAGcgGQAAUAAAgACAAAAAAACAAIAAAAAAAAAQIAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACAgICAAAAAo8AMGe%2F57AAAHPgGyAAAAAAACAAEAAQAAABQAAwABAAAAFAAEACgAAAAGAAQAAQACACgAKf%2F%2FAAAAKAAp%2F%2F%2F%2F2f%2FZAAEAAAAAAAAAAAFUAFYBAAAsAKgDgAAyAAcAAAACAAAAKgDVA1UAAwAHAAA1MxEjEyMRM9XVq4CAKgMr%2FQAC1QABAAD%2B0AIgBtAACQBNGAGwChCwA9SwAxCwAtSwChCwBdSwBRCwANSwAxCwBzywAhCwCDwAsAoQsAPUsAMQsAfUsAoQsAXUsAoQsADUsAMQsAI8sAcQsAg8MTAREAEzABEQASMAAZCQ%2FnABkJD%2BcALQ%2FZD%2BcAGQAnACcAGQ%2FnAAAQAA%2FtACIAbQAAkATRgBsAoQsAPUsAMQsALUsAoQsAXUsAUQsADUsAMQsAc8sAIQsAg8ALAKELAD1LADELAH1LAKELAF1LAKELAA1LADELACPLAHELAIPDEwARABIwAREAEzAAIg%2FnCQAZD%2BcJABkALQ%2FZD%2BcAGQAnACcAGQ%2FnAAAQAAAAEAAPW2NYFfDzz1AAMIAP%2F%2F%2F%2F%2FVre7u%2F%2F%2F%2F%2F9Wt7u4AAP7QA7cG0AAAAAoAAgABAAAAAAABAAAHPv5OAAAXcAAA%2F%2F4DtwABAAAAAAAAAAAAAAAAAAAAAwDVAAACIAAAAiAAAAAAAAAAAAAkAAAAowAAASQAAQAAAAMACgACAAAAAAACAIAEAAAAAAAEAABNAAAAAAAAABUBAgAAAAAAAAABAD4AAAAAAAAAAAACAA4APgAAAAAAAAADAFwATAAAAAAAAAAEAD4AqAAAAAAAAAAFABYA5gAAAAAAAAAGAB8A%2FAAAAAAAAAAIABwBGwABAAAAAAABAD4AAAABAAAAAAACAA4APgABAAAAAAADAFwATAABAAAAAAAEAD4AqAABAAAAAAAFABYA5gABAAAAAAAGAB8A%2FAABAAAAAAAIABwBGwADAAEECQABAD4AAAADAAEECQACAA4APgADAAEECQADAFwATAADAAEECQAEAD4AqAADAAEECQAFABYA5gADAAEECQAGAB8A%2FAADAAEECQAIABwBGwBSAG8AdQBuAGQAIABiAHIAYQBjAGsAZQB0AHMAIAB3AGkAdABoACAAYQBzAGMAZQBuAHQAIAAxADgANQA0AFIAZQBnAHUAbABhAHIATQBhAHQAaABzACAARgBvAHIAIABNAG8AcgBlACAAUgBvAHUAbgBkACAAYgByAGEAYwBrAGUAdABzACAAdwBpAHQAaAAgAGEAcwBjAGUAbgB0ACAAMQA4ADUANABSAG8AdQBuAGQAIABiAHIAYQBjAGsAZQB0AHMAIAB3AGkAdABoACAAYQBzAGMAZQBuAHQAIAAxADgANQA0AFYAZQByAHMAaQBvAG4AIAAyAC4AMFJvdW5kX2JyYWNrZXRzX3dpdGhfYXNjZW50XzE4NTQATQBhAHQAaABzACAARgBvAHIAIABNAG8AcgBlAAAAAAMAAAAAAAADnwHPAAAAAAAAAAAAAAAAAAAAAAAAAAC5B%2F8AAY2FAA%3D%3D)format('truetype')%3Bfont-weight%3Anormal%3Bfont-style%3Anormal%3B%7D%3C%2Fstyle%3E%3C%2Fdefs%3E%3Ctext%20font-family%3D%22Arial%22%20font-size%3D%2216%22%20font-style%3D%22italic%22%20text-anchor%3D%22middle%22%20x%3D%225.5%22%20y%3D%2218%22%3EF%3C%2Ftext%3E%3Ctext%20font-family%3D%22math1798b7b78de0855f6022dac8ee6%22%20font-size%3D%2216%22%20text-anchor%3D%22middle%22%20x%3D%2219.5%22%20y%3D%2218%22%3E%3D%3C%2Ftext%3E%3Ctext%20font-family%3D%22Arial%22%20font-size%3D%2216%22%20font-style%3D%22italic%22%20text-anchor%3D%22middle%22%20x%3D%2232.5%22%20y%3D%2218%22%3Ed%3C%2Ftext%3E%3Ctext%20font-family%3D%22math1798b7b78de0855f6022dac8ee6%22%20font-size%3D%2216%22%20text-anchor%3D%22middle%22%20x%3D%2240.5%22%20y%3D%2218%22%3E.%3C%2Ftext%3E%3Ctext%20font-family%3D%22Arial%22%20font-size%3D%2216%22%20font-style%3D%22italic%22%20text-anchor%3D%22middle%22%20x%3D%2247.5%22%20y%3D%2218%22%3Eh%3C%2Ftext%3E%3Ctext%20font-family%3D%22math1798b7b78de0855f6022dac8ee6%22%20font-size%3D%2216%22%20text-anchor%3D%22middle%22%20x%3D%2261.5%22%20y%3D%2218%22%3E%3D%3C%2Ftext%3E%3Ctext%20font-family%3D%22Arial%22%20font-size%3D%2216%22%20text-anchor%3D%22middle%22%20x%3D%2292.5%22%20y%3D%2218%22%3E10000%3C%2Ftext%3E%3Ctext%20font-family%3D%22math1798b7b78de0855f6022dac8ee6%22%20font-size%3D%2216%22%20text-anchor%3D%22middle%22%20x%3D%22117.5%22%20y%3D%2218%22%3E.%3C%2Ftext%3E%3Ctext%20font-family%3D%22round_brackets18549f92a457f2409%22%20font-size%3D%2216%22%20text-anchor%3D%22middle%22%20x%3D%22123.5%22%20y%3D%2218%22%3E(%3C%2Ftext%3E%3Ctext%20font-family%3D%22Arial%22%20font-size%3D%2216%22%20text-anchor%3D%22middle%22%20x%3D%22129.5%22%20y%3D%2218%22%3E0%3C%2Ftext%3E%3Ctext%20font-family%3D%22math1798b7b78de0855f6022dac8ee6%22%20font-size%3D%2216%22%20text-anchor%3D%22middle%22%20x%3D%22136.5%22%20y%3D%2218%22%3E%2C%3C%2Ftext%3E%3Ctext%20font-family%3D%22Arial%22%20font-size%3D%2216%22%20text-anchor%3D%22middle%22%20x%3D%22143.5%22%20y%3D%2218%22%3E8%3C%2Ftext%3E%3Ctext%20font-family%3D%22math1798b7b78de0855f6022dac8ee6%22%20font-size%3D%2216%22%20text-anchor%3D%22middle%22%20x%3D%22155.5%22%20y%3D%2218%22%3E%26%23x2212%3B%3C%2Ftext%3E%3Ctext%20font-family%3D%22Arial%22%20font-size%3D%2216%22%20text-anchor%3D%22middle%22%20x%3D%22167.5%22%20y%3D%2218%22%3E0%3C%2Ftext%3E%3Ctext%20font-family%3D%22math1798b7b78de0855f6022dac8ee6%22%20font-size%3D%2216%22%20text-anchor%3D%22middle%22%20x%3D%22174.5%22%20y%3D%2218%22%3E%2C%3C%2Ftext%3E%3Ctext%20font-family%3D%22Arial%22%20font-size%3D%2216%22%20text-anchor%3D%22middle%22%20x%3D%22181.5%22%20y%3D%2218%22%3E2%3C%2Ftext%3E%3Ctext%20font-family%3D%22round_brackets18549f92a457f2409%22%20font-size%3D%2216%22%20text-anchor%3D%22middle%22%20x%3D%22188.5%22%20y%3D%2218%22%3E)%3C%2Ftext%3E%3Ctext%20font-family%3D%22math1798b7b78de0855f6022dac8ee6%22%20font-size%3D%2216%22%20text-anchor%3D%22middle%22%20x%3D%22199.5%22%20y%3D%2218%22%3E%3D%3C%2Ftext%3E%3Ctext%20font-family%3D%22Arial%22%20font-size%3D%2216%22%20text-anchor%3D%22middle%22%20x%3D%22226.5%22%20y%3D%2218%22%3E6000%3C%2Ftext%3E%3Ctext%20font-family%3D%22round_brackets18549f92a457f2409%22%20font-size%3D%2216%22%20text-anchor%3D%22middle%22%20x%3D%22247.5%22%20y%3D%2218%22%3E(%3C%2Ftext%3E%3Ctext%20font-family%3D%22Arial%22%20font-size%3D%2216%22%20font-style%3D%22italic%22%20text-anchor%3D%22middle%22%20x%3D%22255.5%22%20y%3D%2218%22%3EN%3C%2Ftext%3E%3Ctext%20font-family%3D%22math1798b7b78de0855f6022dac8ee6%22%20font-size%3D%2216%22%20text-anchor%3D%22middle%22%20x%3D%22267.5%22%20y%3D%2218%22%3E%2F%3C%2Ftext%3E%3Ctext%20font-family%3D%22Arial%22%20font-size%3D%2216%22%20font-style%3D%22italic%22%20text-anchor%3D%22middle%22%20x%3D%22279.5%22%20y%3D%2218%22%3Em%3C%2Ftext%3E%3Ctext%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20text-anchor%3D%22middle%22%20x%3D%22290.5%22%20y%3D%2211%22%3E2%3C%2Ftext%3E%3Ctext%20font-family%3D%22round_brackets18549f92a457f2409%22%20font-size%3D%2216%22%20text-anchor%3D%22middle%22%20x%3D%22296.5%22%20y%3D%2218%22%3E)%3C%2Ftext%3E%3C%2Fsvg%3E)
Đáp số: format('truetype')%3Bfont-weight%3Anormal%3Bfont-style%3Anormal%3B%7D%3C%2Fstyle%3E%3C%2Fdefs%3E%3Ctext%20font-family%3D%22Arial%22%20font-size%3D%2216%22%20text-anchor%3D%22middle%22%20x%3D%2218.5%22%20y%3D%2218%22%3E6000%3C%2Ftext%3E%3Ctext%20font-family%3D%22Arial%22%20font-size%3D%2216%22%20font-style%3D%22italic%22%20text-anchor%3D%22middle%22%20x%3D%2242.5%22%20y%3D%2218%22%3EN%3C%2Ftext%3E%3Ctext%20font-family%3D%22math167c6a1e7ce56d3d6fa748ab6d9%22%20font-size%3D%2216%22%20text-anchor%3D%22middle%22%20x%3D%2254.5%22%20y%3D%2218%22%3E%2F%3C%2Ftext%3E%3Ctext%20font-family%3D%22Arial%22%20font-size%3D%2216%22%20font-style%3D%22italic%22%20text-anchor%3D%22middle%22%20x%3D%2266.5%22%20y%3D%2218%22%3Em%3C%2Ftext%3E%3Ctext%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20text-anchor%3D%22middle%22%20x%3D%2277.5%22%20y%3D%2211%22%3E2%3C%2Ftext%3E%3C%2Fsvg%3E)
Áp suất tác dụng lên điểm cách mặt nước 30cm là:
\(p_1=dh_1=10000.30.10^{-2}=3000\left(Pa\right)\)
Áp suất tác dụng lên điểm cách đáy thùng 20cm là:
\(p_2=dh_2=10000\left(80-20\right).10^{-2}=6000\left(Pa\right)\)
a. Áp suất của nước tại điểm cách đáy thùng 40 cm (0,4 m) là:
\(p=d.h=10000.\left(1,6-0,4\right)=12000\) (Pa)
b. Áp suất của nước tại điểm cách đáy thùng 0,3 m là:
\(p'=d.h'=10000.\left(1,6-0,3\right)=13000\) (Pa)
Áp suất này giảm vì độ cao cột chất lỏng (tính từ mặt thoáng) càng lớn thì áp suất càng lớn.
Áp suất lên đáy thùng là:
\(p=d.h=8000.1,4=11200\left(\dfrac{n}{m^2}\right)\)
Áp suất lên điểm cách đáy thùng 0,4m là:
\(p=d.h=8000.\left(1,4-0,4\right)==8000\left(\dfrac{N}{m^2}\right)\)
Tóm tắt:
\(d=10000\left(\dfrac{N}{m^3}\right)\)
\(h=90cm=0,9m\)
\(h'=\left(90-30\right)=60cm=0,6m\)
\(p=?Pa\)
\(p'=?Pa\)
GIẢI:
Áp suất tác dụng lên đáy thùng là:
\(p=dh=10000\cdot0,9=9000\left(Pa\right)\)
Áp suất tác dụng lên cách đáy thùng:
\(p'=dh'=10000\cdot0,6=6000\left(Pa\right)\)
10000 N/m3 là TLR của nước nhé.
Áp suất lên đáy thùng là :
\(P_đ=d.h_{thùng}=10000\times0.9=9000\left(Pa\right)\)
Áp suất lên điểm cách đ 30 cm là:
\(P_h=10000\times0.6=6000\left(Pa\right)\)
Kết luận...
a) Áp suất áp dụng lên đáy thùng:
pđáy thùng = \(d.h\)\(=\)\(10000.3=30000N\)/\(m^2\)
Áp suất của nước lên điểm A:
pa\(=d.h_A=10000.2,5=25000N\)/\(m^2\)
b) Nếu điểm A có áp suất là \(15000N\)/\(m^2\) thì điểm A cách mặt thoáng là:
\(h=p:d=15000:10000=1,5m\)
Áp suất của nước lên đáy thùng là: \(p=d.h=10000.1,6=16000Pa\)
Áp suất của nước lên đáy thùng cách đáy bình 0,4m là: \(p=d.h=10000.\left(1,6-0,4\right)=12000Pa\)