Homework Statement
I am trying to integrate from 0 to 10 ft -4x^2/2+4x. I am solving for deflection. The forces are in kips. Somehow the book ends up with k-ft^3. I don't understand how I would carry units in an integration. Any help please?
Homework Equations
The Attempt at a...
If you don't mind answering this question, would you say the salary is better as a construction manager or about the same? Can all Civil engineers work as a construction manager?
Thank you so much for responding. I erased question 10, but it was basically how many specializations are there is civil engineering. @bklynkenny you said you don't work as an engineer. Is that because you have an MBA now and work as a manager? I am really interested in management.
1. What made you choose this type of engineering?
2. What type of equipment do you work with on a day to day basis?
3. What is your educational back ground?
4. What is your favorite part of the job?
5. What is you least favorite part of the job?
6. Do you need a...
That's the equation I'm used to. If we assume that the angle is small then sintheta=y/L
dsintheta=m*wavelength
d(y/L)=m*wavelength
m*wavelength*L/(d)=y ? I don't know what's wrong with the equation. For the units I coverted everything to cm because 1/7300=d in cm.
Homework Statement
White light containing wavelengths from 396 nm to 756 nm falls on a grating with 7300 lines/cm. How wide is the first-order spectrum on a screen 2.15 m away?
Homework Equations
y=m*L*wavelenth/(d)
The Attempt at a Solution
using the equation I have found y1 to...
Homework Statement
A circular coil with 35 turns of wire and a diameter of 19 cm is placed in a magnetic field given by B(t) = 6 t^2 + 6 t + 2 T where t is time in seconds. The field is perpendicular to the plane of the coil. What is the induced EMF at t = 5 s?
Homework Equations...
Homework Statement
A capacitor with a capacitance of C = 28.7 μF is slowly charged by a constant current of I = 63.2 nA. How long does it take to charge the capacitor to a voltage of V = 28.9 V?
Homework Equations
q=cvb(1-e^(-t/RC))
Vb=IR+QC
The Attempt at a Solution
I have tried...
Ok so I got it by using voltage loss=amps*wire resitance/meter*distance
Usually this equation is
voltage loss=amps*wire resitance/meter*distance*2 wires
Why was it not necessary to multiply the answer by 2 in this case?
Homework Statement
A bird stands on an electric transmission line carrying 2210 A, as seen in the figure below. The line has 3.32E-5 Ω resistance per meter and the bird's feet are 3.80 cm apart. What voltage does the bird feel?
Homework Equations
R=sigma(L)/A
I=V/R
The Attempt at a...
Homework Statement
An underground telephone cable, consisting of a pair of wires, has suffered a short somewhere along its length (at point P in the Figure). The telephone cable is 4.00 km long, and in order to determine where the short is, a technician first measures the resistance between...
Homework Statement
A rod of length 25 cm has a uniform linear charge density of 7 μC/m. Determine the Electric Field at a point P located at a perpendicular distance 69 cm along a line of symmetry of the rod.
Homework Equations
E=k*charge density(integral(dx/(d^2+x^2)^3/2)
The...
Homework Statement
Four charges Aq,Bq,Cq, and Dq (q = 1.00 × 10-7C) sit in a plane at the corners of a square whose sides have length d = 85.0 cm, as shown in the diagram below. A charge, Eq, is placed at the origin at the center of the square.
DATA: A = 6, B = 2, C = 3, D = 6, E = -1...
1. Homework Statement
For this exercise, four coins are tossed 32 times and the number of heads are recorded for each toss. Each toss falls into one of the following macroscopic states; 0 heads, 1 heads, 2 heads, 3 heads and 4 heads. Suppose the 32 tosses result in the following outcome...
Homework Statement
An object in SHM oscillates with a period of 5.73 s and an amplitude of 10.47 cm. How long does the object take to move from x=0 cm to x=5.78 cm?
Homework Equations
x=Acos(wt+ro)
The Attempt at a Solution
I solved for ro which was pi/2 when x=o and t=o. Then...
Homework Statement
A spring with spring constant 18.39 N/m hangs from the ceiling. A 452 g ball is attached to the spring and allowed to come to rest. It is then pulled down 4.62 cm and released. What is the time constant if the ball’s amplitude has decreased to 2.85 cm after 32 oscillations...
The question has several parts and it's asking me for the phase at t=.5s. I used the same formula but it's wrong. Could you please let me know what's wrong? thank you.