Homework Statement
A double loop circuit is shown in the figure below.[/B]
The Emf x = 6.00 V and the Emf w = 19.00 V. Both are shown on the diagram. Calculate the power dissipated in the 6 Ω resistor located on the extreme right in the circuit. Homework Equations
V=IR, P=VI
The Attempt at...
What I meant was that I would solve for the angular spread of the second order maxima for one wavelength, then the other, and the take the difference of those two values. What I get should be the angular distance between the two maxima. I could then use the equation I gave in my OP and solve...
Homework Statement
A grating has a line density of 1010 cm−1, and a screen perpendicular to the ray that makes the central peak of the diffraction pattern is 2.5 m from the grating. If light of two wavelengths, 590 nm and 680 nm, passes through the grating, what is the separation on the (flat)...
It doesn't involve exactly 5, no, it's actually 5.01 and when I put in 6 as the answer I was told it's correct. You say there's a better way, I guess you mean by taking the 113 decibels as the reference and just having 10^(7/10)? I don't really know the ins and outs of the equation, would you be...
Homework Statement
At a rock concert the fans in the front row are bombarded with 113 dB of sound. How many rock bands playing simultaneously at this level would be required to reach or exceed the pain threshold (120 dB)?
The answer has to be an integer. (Fractional rock bands don't exist ...)...
Homework Statement
A train slows down as it rounds a sharp horizontal turn, slowing from 90 km/h to 50 km/h in the 15 s that it takes to round the bend. The radius of the curve is 150 m. Compute the total acceleration at the moment the train speed reaches 50 km/h
Homework Equations
a =...
Well, I found that equation in a mechanical engineering reference book, and it makes sense, so I'm inclined in that direction. Also, I'm not sure if my d_in equation makes sense, it's a unitless ratio of distances and the MA if the force is applied to the drum, and not an actual distance, isn't...
I've thought about it some more and I think I've got it. This complex machine can be broken up into three simple machines: the movable pulley, the wheel and axle, and the rope wrapped around the two drums.
The movable pulley has a MA of 2.
The wheel and axle has an MA of \frac{d_1}{d_2} =...
Hi,
I am trying to find an equation that would give the mechanical advantage of this system:
I am fairly new to this kind of analysis, but my understanding is that to determine the MA I need to consider that:
W_{in} = W_{out}
F_{in} d_{in} = F_{out} d_{out}
F_{out} / F_{in} = d_{in} /...
Hi,
I'm trying to build a cat house and I thought I would calculate the exact thickness of insulating material I would need in order to keep my cat toasty when it gets cold. I'm not sure if I have the right process though. I thought I would ball park how many calories a cat burns in an hour...
Homework Statement
5. A large cylinder with a diameter of 3.00 m and a height of 3.50 m is closed at the upper end and open at the lower end. It is lowered from air into sea water with the air initially at 20.0°C and then to a depth of 75.0 m. At this depth the water temperature is 4.0°C, and...
Homework Statement
\displaystyle{\int}\dfrac{x}{\sqrt{x^2+x+1}}~dx =
\displaystyle{\int}\dfrac{(x+\frac 1 2)-\frac 1 2}{\sqrt{(x+\frac 1 2)^2+(\frac {\sqrt 3} 2)^2}}~dx
Homework Equations
Given.
The Attempt at a Solution
The solution is given, but I'm not sure how it was...
Thanks. For b), is the mistake that I forgot to consider the velocity as it enters the hole so that the equation is
v_2 = \sqrt{v_1^2 + g h_1}
where h_1 = 4m?
Okay, thanks. Would you mind taking a look at what I got?
A) v = \sqrt{2gh} = \sqrt{2(9.8)(.025)} = .7\frac{m}{s}
B) v = \sqrt{2gh} = \sqrt{2(9.8)(4.025)} = 8.882\frac{m}{s}
C) A_2 = \frac{A_1 V_1}{V_2} = 38.69\times 10^{-6}
D) Volumetric flow rate = Velocity x Area = 343x10^-6...
Homework Statement
6. During a storm, water flows off a roof into an eaves trough and then down from a 5.0 cm diameter hole in the bottom of it. The water in the trough is 2.5 cm deep. (Torricelli’s law & Bernoulli’s equation )
a. What is the speed (velocity) of the flow as it leaves the...