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Forums
MichaelTam
Recent content by MichaelTam
Help Needed: Solving y = A sin({2*10^6 ({\pi / 3 -\pi t }) + \phi })
But how can I find t?## \lambda = 3 ## because ## k = 2 \pi/3 = 2 \pi/\lambda##
MichaelTam
Post #2
Aug 19, 2021
Forum:
Introductory Physics Homework Help
Help Needed: Solving y = A sin({2*10^6 ({\pi / 3 -\pi t }) + \phi })
I know so ## y = A sin({2*10^6 ({\pi / 3 -\pi t }) + \phi }) ## There still some unknown I cannot find, can anyone give me some hint please?
MichaelTam
Thread
Aug 19, 2021
Tags
Phi
Waves
Replies: 2
Forum:
Introductory Physics Homework Help
Troubleshooting F = q v B sin(theta) Calculation
Thanks a lot!
MichaelTam
Post #7
Aug 17, 2021
Forum:
Introductory Physics Homework Help
Troubleshooting F = q v B sin(theta) Calculation
So I get 129.9 micro Newton .
MichaelTam
Post #6
Aug 17, 2021
Forum:
Introductory Physics Homework Help
Troubleshooting F = q v B sin(theta) Calculation
Theta is ##pi/2 - pi/6##
MichaelTam
Post #5
Aug 17, 2021
Forum:
Introductory Physics Homework Help
Troubleshooting F = q v B sin(theta) Calculation
Sorry , these are the updates.
MichaelTam
Post #3
Aug 17, 2021
Forum:
Introductory Physics Homework Help
Troubleshooting F = q v B sin(theta) Calculation
I use the equation find that ## F = q v B sin(theta) ## F = 0.01*300*5*10^-5*0.5 F =75 N I don’t know why my solution is not correct?
MichaelTam
Thread
Aug 17, 2021
Tags
Calculation
Troubleshooting
Replies: 12
Forum:
Introductory Physics Homework Help
How many walls can this battery-powered crane lift before recharging?
I found the system is coming up with a error, the solution can be include m now, I’m sorrry….
MichaelTam
Post #15
Aug 16, 2021
Forum:
Introductory Physics Homework Help
How many walls can this battery-powered crane lift before recharging?
I use the equation of 1.Potential energy = N*m*g*(h_2-h_1) 2.Energy of the battery can be used = (1-20%)*U (1) = (2) Then I find N=N=0.8*U/(m*g*(h_2-h_1)) but how can I express m in terms of other variable?
MichaelTam
Post #13
Aug 16, 2021
Forum:
Introductory Physics Homework Help
How many walls can this battery-powered crane lift before recharging?
‘That’ means the last exercise it mention m is equal to 1000kg, I think I doesn’t work in this exercise.
MichaelTam
Post #12
Aug 16, 2021
Forum:
Introductory Physics Homework Help
How many walls can this battery-powered crane lift before recharging?
the last exercise tells me m=1000kg, but I don’t know if I can substitute that into this situation or not.
MichaelTam
Post #10
Aug 16, 2021
Forum:
Introductory Physics Homework Help
How many walls can this battery-powered crane lift before recharging?
But I cannot express N as variable m
MichaelTam
Post #9
Aug 16, 2021
Forum:
Introductory Physics Homework Help
How many walls can this battery-powered crane lift before recharging?
each wall has a mass of m but N is the sum of those mass.
MichaelTam
Post #7
Aug 16, 2021
Forum:
Introductory Physics Homework Help
How many walls can this battery-powered crane lift before recharging?
N=0.8*U/(g*(h_2-h_1)), you may see it at the second post
MichaelTam
Post #5
Aug 16, 2021
Forum:
Introductory Physics Homework Help
How many walls can this battery-powered crane lift before recharging?
My solution is incorrect, but I still can’t find out the error….
MichaelTam
Post #3
Aug 16, 2021
Forum:
Introductory Physics Homework Help
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MichaelTam
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