Sunday
August 31, 2014

Posts by Henri


Total # Posts: 50

math
8s-29=34+3
December 11, 2013

Math
give the number whose hundred place is one-third of the greatest one-digit number, the tens place is twice the hundred place, the ones place is four times the digit in the hundreds place divided by 2, and the three digits in the thousands period is the product of the digits in...
June 19, 2012

applied mechanics
A solid shaft of 65mm outside diameter and a hollow shaft of 85mm outside diameter are connected by 6 bolts with the mean pitch of thread being 155mm. The shear stress due to the torque on the shafts is equal to the shear stress on the bolts. a) Find the diameter of the bolts...
May 7, 2009

applied mechanics
How do we calculate the "radius of gyration" of a 500g steel rod spinning at 300 RPM and having a lenght of 30cm? We need this to find the moment of Inertia... don't we?
May 7, 2009

French
7. Pour aller au mariage, Édouard met une chemise et une ---------. Answer: chers Ans. cravate 11. Maurice et Chantal -------- des courses au grand magasin. Answer: taille Ans. font Good job, Bonne Chance, H
May 6, 2009

Physics
How do we calculate the "radius of gyration" of a 500g steel rod spinning at 300 RPM and having a lenght of 30cm? We need this to find the moment of Inertia... don't we?
May 6, 2009

Physics
A solid shaft of 65mm outside diameter and a hollow shaft of 85mm outside diameter are connected by 6 bolts with the mean pitch of thread being 155mm. The shear stress due to the torque on the shafts is equal to the shear stress on the bolts. a) Find the diameter of the bolts...
May 6, 2009

french
*Aller en* Afrique pour aider les éléphants... (sounds better to me and i'm a french Canadian! lol) *à l'Afrique*... is incorrect
May 5, 2009

French
You could also have said: *je demeure*
May 4, 2009

French
Oops,missed one:J'ai quatorze ans et (je)*j'*+habite=j'habite
May 4, 2009

French
Je m'appelle Larry. J'ai quatorze ans et je habite (dans)*à* Vernon, BC au Canada. *Là* où je habite, au printemps il fait beau(.)*et* en été il fait chaud. Mais (en)*à l'automne* (autumne) il fait *plus* frais(.)*et* (...
May 4, 2009

Applied Machanics (Physics)
What do you mean by: 1/12ml^2 k^2=radius of gyration
May 3, 2009

Applied Machanics (Physics)
A steel rod of 500g and 30 cm long spins at 300 RPM,the rod pivots around the center. a) Find angular momentum Moment of Inertia(I)=mk^2 I=0.5kgX(0.075m)^2 I=0.0028125kg*m^2 To find angular momentum: w=300rpmX2pi/60sec w=31.42 rads/s Ang. Momentum=Iw A.M.=0.0028125X31.42 A.M.=...
May 3, 2009

French 1
c)*La* vitrine b)des
May 3, 2009

French (URGENT)
Bonjour, *Ici*("voici" instead) un petit paragraphe à propos de mon ami James. James est NÉ EN Alberta mais il habite Vernon, BC *de*("au" instead) Canada. Il a quinze ans ET il a un frère cadet nommé Thomas. Thomas a quatorze ...
April 27, 2009

Please check my math
A turnbuckle is needed to apply an 8kN force on a cable. If the efficiency of the turnbuckle is 40% and the force applied is 159.155N with a lever of 20cm in length. a)Find Mechanical Advantage: M.A.=Load/Effort M.A.=8000/159.155 M.A.=50.265 (ans.) b)Find the velocity ratio: ...
April 26, 2009

French
....et des tennis("espadrilles" instead) Mon père met... Ma mère... "au mois de juillet" and "au mois de janvier"... at the very end of the sentence, not at the begining.
April 24, 2009

Physics (is this right?)
A turnbuckle is needed to apply an 8kN force on a cable. If the efficiency of the turnbuckle is 40% and the force applied is 159.155N with a lever of 20cm in length. a)Find Mechanical Advantage: M.A.=Load/Effort M.A.=8000/159.155 M.A.=50.265 (ans.) b)Find the velocity ratio: ...
April 24, 2009

Physics
A turnbuckle is needed to apply an 8kN force on a cable. If the efficiency of the turnbuckle is 40% and the force applied is 159.155N with a lever of 20cm in length. a)Find Mechanical Advantage: M.A.=Load/Effort M.A.=8000/159.155 M.A.=50.265 (ans.) b)Find the velocity ratio: ...
April 23, 2009

Physics
Lubricating oil, with a relative density of 0.79, flows around a 90¨¬ bend. The pipe diameter is 0.45m, and the oil has a pressure head of 7m and the flow is 1.7m3/s. Find the force exerted by the oil on the bend. Oil density = 0.79 X 103 Volumetric mass flow rate = 1....
April 23, 2009

French
Le printemps est ma saison favorite. Je crois que cette saison a plus d'avantages que d'inconvénients. Il est vrai qu'il pleut beaucoup et quand le temps est beau, c'est plus facile d'être distrait, mais à mon avis, les gens sont plus ...
April 22, 2009

Physics
A turnbuckle is needed to apply an 8kN force on a cable. If the efficiency of the turnbuckle is 40% and the force applied is 159.155N with a lever of 20cm in length. a)Find Mechanical Advantage: M.A.=Load/Effort M.A.=8000/159.155 M.A.=50.265 (ans.) b)Find the velocity ratio: ...
April 22, 2009

Physics
Lubricating oil, with a relative density of 0.79, flows around a 90¨¬ bend. The pipe diameter is 0.45m, and the oil has a pressure head of 7m and the flow is 1.7m3/s. Find the force exerted by the oil on the bend. Oil density = 0.79 X 103 Volumetric mass flow rate = 1....
April 22, 2009

Spring stiffness
Thanks drwls... could you check the next one please
April 22, 2009

Spring stiffness
A spring has stiffness of 100Nmm, the initial compression of the spring is 15mm, and it is then compressed to 65mm. a)Find potential energy at 15mm: K=100Nmm*1000=100000Nm Ep=Kc^2/2 Ep=(100000*0.015^2)/2 Ep=11.25 joule (ans.) b)Find Ep at 65mm: Ep2=(100000*0.065^2)/2 Ep2=211....
April 22, 2009

Math check please
A spring has stiffness of 100Nmm, the initial compression of the spring is 15mm, and it is then compressed to 65mm. a)Find potential energy at 15mm: K=100Nmm*1000=100000Nm Ep=Kc^2/2 Ep=(100000*0.015^2)/2 Ep=11.25 joule (ans.) b)Find Ep at 65mm: Ep2=(100000*0.065^2)/2 Ep2=211....
April 21, 2009

Is my math correct(2)
What load can be lifted by a screw jack given: Toggle1 length:520mm Force applied:230N Toggle2 lenght:445mm Force applied:300.557N Mean pitch of thread:13mm S.J. efficiency:35% My answer: Assuming T2 to be 520mm long, the equivalent force would be: 0.445mX300.557N=0.52m X F2 ...
April 20, 2009

Is my math correct?
Thank you so much
April 20, 2009

Is my math correct?
Find the Inside diameter(d) and outside diameter(D) of a hollow shaft given: Power transmitted by shaft=1400kW Shaft speed=45 RPM Angle of twist on shaft=1 degree Shaft lenght(L)=25D Assume d=0.6D Modulus of Rigidity(G)=81.75GPa My answer: Shaft ang. vel.=45*2pi/60s A.V.=4....
April 20, 2009

Applied Mech.2
Find the Inside diameter(d) and outside diameter(D) of a hollow shaft given: Power transmitted by shaft=1400kW Shaft speed=45 RPM Angle of twist on shaft=1 degree Shaft lenght(L)=25D Assume d=0.6D Modulus of Rigidity(G)=81.75GPa My answer: Shaft ang. vel.=45*2pi/60s A.V.=4....
April 19, 2009

Applied Mech. (with my answer..lol)
What load can be lifted by a screw jack given: Toggle1 length:520mm Force applied:230N Toggle2 lenght:445mm Force applied:300.557N Mean pitch of thread:13mm S.J. efficiency:35% My answer: Assuming T2 to be 520mm long, the equivalent force would be: 0.445mX300.557N=0.52m X F2 ...
April 19, 2009

FRENCH
The way it is used here is to show that the "art pieces" were made in either France or Maroc
March 22, 2009

Torque and shear stress
Thanks... I couldn't figure out why there's is a thread pitch either!!!
March 22, 2009

Torque and shear stress
A solid shaft of 65mm outside diameter and a hollow shaft of 85mm outside diameter are connected by 6 bolts with the mean pitch of thread being 155mm. The shear stress due to the torque on the shafts is equal to the shear stress on the bolts. a) Find the diameter of the bolts...
March 22, 2009

Question & Work
Thank you very much...It's probably my "new" word... 2007 student edition.
March 21, 2009

Question & Work
Can somebody tell me how come my work doesn't get posted with my question.
March 21, 2009

please check my math2
This was the original post... Two bodies hang on a string 2.1m long. The two bodies have a mass of 3.75kg and 2.4kg respectively. If the 3.75kg mass is raised to a height of 0.545m and released, and if upon impact the mass adhere. Mass1 = 3.75 kg Mass2 = 2.4 kg String length...
March 21, 2009

please check my math2
You figured it out, thanks Damon. But how come my work didn't get posted with the question... I did it like you up until the 12.2kg m/s part... Now i know where I went wrong.. T-Y Henri
March 21, 2009

please check my math2
Two bodies hang on a string 2.1m long. The two bodies have a mass of 3.75kg and 2.4kg respectively. If the 3.75kg mass is raised to a height of 0.545m and released, and if upon impact the mass adhere. Mass1 = 3.75 kg Mass2 = 2.4 kg String length = 2.1 m M1 raised = 0.545m a) ...
March 21, 2009

Please check my math
How come my work doesn't show up with my question??? Is it to long?
March 21, 2009

Please check my math
A spring has stiffness of 100Nmm, the initial compression of the spring is 15mm, and it is then compressed to 65mm. 1Nmm = 0.001Nm 100Nmm = 100 X 0.001 = 0.1Nm Comp.1 = 15 mm = 0.015m Comp.2 = 65 mm = 0.065m a) i-Find potential energy at 15mm. ii- Find potential energy at 65mm...
March 21, 2009

Please check my math 2
A spring has stiffness of 100Nmm, the initial compression of the spring is 15mm, and it is then compressed to 65mm. 1Nmm = 0.001Nm 100Nmm = 100 X 0.001 = 0.1Nm Comp.1 = 15 mm = 0.015m Comp.2 = 65 mm = 0.065m a) i-Find potential energy at 15mm. ii- Find potential energy at 65mm...
March 21, 2009

Please check my math
A turnbuckle is needed to apply an 8kN force on a cable. If the efficiency of the turnbuckle is 40% and the force applied is 159.155N with a lever of 20cm in length. a) Find the mechanical advantage. Mechanical Advantage=Load/Effort M.A.=8000N/159.155N M.A.=50.265 (Ans.) b) ...
March 21, 2009

quad formula help
2X2+8x=-1 4+8x=-1 8x=-1-4 x=-5/8 x=-0.625
March 21, 2009

Velocity Ratio
Does my work make sense? A turnbuckle is needed to apply an 8kN force on a cable. If the efficiency of the turnbuckle is 40% and the force applied is 159.155N with a lever of 20cm in length. a) Find the mechanical advantage. Mechanical Advantage=Load/Effort M.A.=8000N/159.155N...
March 20, 2009

Applied Mechanics
Is my work correct? Two bodies hang on a string 2.1m long. The two bodies have a mass of 3.75kg and 2.4kg respectively. If the 3.75kg mass is raised to a height of 0.545m and released, and if upon impact the mass adhere. Mass1 = 3.75 kg Mass2 = 2.4 kg String length = 2.1 m M1 ...
March 20, 2009

Fluids in motion
Thank you, makes so much sence now! lol :-)
March 20, 2009

Fluids in motion
Lubricating oil, with a relative density of 0.79, flows around a 90º bend. The pipe diameter is 0.45m, and the oil has a pressure head of 7m and the flow is 1.7m3/s. Find the force exerted by the oil on the bend.
March 20, 2009

applied mechanics
Solid shafts and larger diameter hollow shafts are usally connected throught a flange welded over the smaller diameter of the solid shaft. The flange outside diameter is the same as the hollow shaft. Bolts are then used to secure the two shafts together.
March 20, 2009

applied mechanics
A solid shaft of 65mm outside diameter and a hollow shaft of 85mm outside diameter are connected by 6 bolts with the mean pitch of thread being 155mm. The shear stress due to the torque on the shafts is equal to the shear stress on the bolts. a) Find the diameter of the bolts...
March 20, 2009

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