Log in
Physics
1
answer
0
watching
85
views
26 Nov 2019

Please show me how to solve this problem.
I will give proper respect as soon as possible. PLEEEASEhelpme!!!
I hope you can help me with all questions, but if you can helpwithonly a few I would be so happy.

Ch11 #3
A wave is specified by y = 6 sin 2π(8t -4x +3/4).Find (a)the amplitude, (b) wavelength, (c) frequency, (d) initialphaseangle, and (e) the initial displacement at time t = 0 and x=0.

Ans. (a) A= 6 (b) λ=0.25 (c)ω=16π , frequency= 8 (d) 3π/2(e) y=-6

Watch
1
answer
0
watching
85
views

For unlimited access to Homework Help, a Homework+ subscription is required.

Patrina Schowalter
Patrina SchowalterLv2
22 Oct 2019

Unlock all answers

Get 1 free homework help answer.
Already have an account? Log in
Share

Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

Please show me how to solve this problem.
I will give proper respect as soon as possible. PLEEEASEhelpme!!!
I hope you can help me with all questions, but if you can helpwithonly a few I would be so happy.

Ch11 #4
A wave is specified by y = 15 sin 2π(4t -5x +2/3). Find (a)theamplitude, (b) the wavelength, (c) the frequency, (d) theinitialphase angle, and (e) the displacement at time t = 0 and x =0.

Ans. (a) 15 (b) 1/5 (c) 4 (d) 240 degree (e) -13

Please show me how to solve this problem.
I will give proper respect as soon as possible. PLEEEASEhelpme!!!
I hope you can help me with all questions, but if you can helpwithonly a few I would be so happy.

I solved A through C. But D is a different answer that whattheteacher gave me. So, I could not solve E though I. I hope youcanhelp me with this part.

P.S. This my answer agrees with the books answer but theteachersaid that the book is wrong. So I am a littleconfused.

11#1
A coil spring hangs from the ceiling. When a mass of 50g isfastenedto the lower end, the spring is stretched a distance of15.89 cm. Ifthe mass is now pulled down another 5 cm and released,it willvibrate up and down with SHM.
Find
(a) the spring constant
K=F/X so, K=(0.5kg)(9.8m/s2) / 0.1589m = 30.837N/m
(the teacher gave me to answer is3.0837N/m)
(Books Ans. 30.837N/m)

(b) the period of vibration
T=2π√(m/K) so, T=2π√(0.5kg/30.837Nm) =0.8001s

(c) the frequency
frequency=1/T so, frequency=1/0.8001 = 1.2499Hz

(d)the angular velocity of a graph point drawn forthevibration
ω=2π/T so, ω=2π/0.8001 = 5.027rad/s (but the teachergave me to answer is7.85rod/sec)

(e)the maximum velocity of the mass
Ans. 0.39265m/s

and(f)its maximum acceleration
Ans. a = -3.081m/s2 (the teacher gave methisanswre)
(Books Ans. 0.4754m/s2)

(h)find the time to reach the first maximum
Ans. time =0.4sec (the teacher gave me thisanswer)
(Books Ans. 4.001s)

and (i)the total energy of vibration
Ans. 0.00385J (the teacher gave me this answer)
(Books Ans 3.8546J)

(j)write down an equation for the motion
y=0.050sin(7.85t+4.71ROD)(theteacher gave me this answer)

Weekly leaderboard

Home
Homework Help 3,900,000
Physics 110,000
Start filling in the gaps now
Log in