Diameter Definition and 522 Threads

I need help getting started on this. Question: An iron bolt is used to connect two iron plates together. The bolt must withstand shear forces up to about 3200 N. Calculate the minimum diameter for the bolt, based on a saftey factor of 6.0. Here is what I know so far. Shear Strength is 170...

This is a multiple choice question The fundamental frequency of a small diameter organ pipe is a) directly proportional to its length b) inversely proportional to its length c) independent of its length d) inversely proportional to its diameter e) directly proportional to its...

Hi everybody, My question is: how do we prove that the ratio of a circle's circumference to its diameter is a certain real number, the same for any circle (which we call pi)? If the proof is difficult to post, could you suggest some books that may include it because i haven't found one yet...

A spherical air bubble originating from a scuba diver at a depth of 18 m has a diameter of 1 cm. What will the bubble's diameter be when it reaches the surface? (Assume constant temp) a. 0.7 cm b. 1 cm c. 1.4 cm d. 1.7 cm I know this problem shouldn't be all that difficult, but I'm not...

Intelligent beings on the plantet Xeno have developed a unit of distance called the xen. The number of square xens in the surface area of Xeno is exactly the number of cubic zens in its volume. If Xeno is a spherical planet with a diameter of 2160 Kms, how many km are there in one Xen...

How can you find the diameter of a tube without measuring it? Is there a equation or something or any method other than measuring it

Hi All, I am trying to get a interference pattern from normal daylight and was wonder if I used a VERY FINE pinhole (micron sizes) to concentrate the light into some coherence and THEN have the double-slit plate behind the pinhole plate if this would work. How do I calculate the...

[B]You have a 12 volt car battery and a supply of #18 gauge copper wire. If you make a solenoid 30cm long and 8cm in diameter, winding two layers of wire along the length of the solenoid, what will be the strength of the magnetic field at teh center of teh solenoid when connected to the car...

I'm still very confused to some extent. I know that from QM, an electron, due to Heisenbergs UP can't be measured definitely. It is following Schrödingers equation, and is presented as a vector in Hilbert space ,i.e. in a "electron cloud" of propability. But here my theory is incomplete...

a) what is the diameter of a steel wire 18m long that elongates 9mm when a load of 380kg is hung on its end? b) if the elastic limit is 3.00E8 N/m^2, does permanent deformtion occur? a. \Delta L=FL/YA 9E-3m=\frac{3724N*18m}{20E10N/m^2*A} A=3.724E-5m^2 diameter=6.8859mm b. stress=F/A...

Check please Eqn of Circle with diameter end points(1,2) and (3,-6) Find the equation of a circle with a diameter that has end points P(1,2) and Q(3,-6) I know the equation for a circle in general form is x^2+y^2=r^2 First I found the distance between the two points given because this...

how can I calculate the "diameter" of a spiral ? someone told me i need to use Differential or Integral Equations to solve this, but I'm not sure how. If there is a spiral that it's radius increases by 1 cm for every radian until the radius reaches the size R . how can I calculate the...

This one is confusing me: -----The yield strength of a material is the largest stress a material can support without permanently elongating (like a slinky stretched too far). A brass wire 2.10m long is to support a 176.00N "Eat At Joe's" sign without permanently elongating. The wire...

A disk 8.0 cm in diameter is initially at rest. A small dot is painted on the edge of the disk. The disk accelerates at 600rad/s^2 for .5s, then coasts at a steady angular velocity for another .5s. What is the speed of the dot at t = 1 s? Through how many revolutions has it turned? I...

hey guys, I'm new to physics .. and to be frank it seems scary. :-p anyways i was wondering if anyone could help me with this: The diameter of milky way is 1.0 *10^5 lightyears (ly). The distance to Andromeda is about 2.0 million ly. If a scale model represents the milky ways and andromeda...

I'm having trouble with this problem below: 1000 cm^3 of oil is spilled onto a smooth lake. If the oil spreads out uniformly until it makes an oil slick just one molecule thick, with adjacent molecules just touching, estimate the diameter of the oil slick. The diameter of the oil molecules...

I would like to calculate the new diameter and thickness of a steel pipe filled with water. At 20oC the pipe ID is 0.1016m and thickness is 0.0127m. Coef vol th exp water 21e-5/oC coef lin th exp steel 1.2e-6 The pipe can be assumed 1m in length. I calculated that the water would expand...

i found this in a quarry, it is round approx 3 inches diameter 1.25 inches thick, concave both faces and has raised dimples on the side 180% apart, any ideas? i also found a smaller one identical description but only .75 inches diameter.

Simple Question: Volume --> Diameter I know how to find volume using diameter, but how do you find diameter using volume?

Tried this problem for about 2 hrs and no dice... A spy satellite orbiting at 150 km above the Earth's surface has a lens with a focal length of 3.5 m and can resolve objects on the ground as small as 36 cm; it can easily measure the size of an aircraft's air intake. What is the effective...

I can understand that given a star's mass, composition, age, temperature, etc. it could be relatively straightforward to calculate it's size. But do the big telescopes have enough resolution to directly measure a star's size? Or does it have to be calculated from distance, spectrum, and...

How many revolutions per minute would a 15m diameter Ferris wheel need to make for the passengers to feel weightless at the topmost point?