hutchphd's latest activity
-
hutchphd reacted to berkeman's post in the thread High School A question about the rotation of points on a wheel with
Like.
Have a look at this article about the Cycloid motion of a point on a wheel: https://en.wikipedia.org/wiki/Cycloid... -
hutchphd reacted to Baluncore's post in the thread High School The physics of flywheel launchers (like tennis ball shooters) with Like.
But the wheel surfaces are not parallel at the entry and the exit. As the ball moves toward the point of release, the Z force provides a...
-
hutchphd replied to the thread High School A question about the rotation of points on a wheel.Of course you should say "moving relative to the ground". If the cart on which the wheel is attached is moving at speed v then the...
-
hutchphd reacted to Ibix's post in the thread Undergrad Our Mathematical Universe book -- Since when does light contain voltage? with Like.
I'd prefer to say it includes an electric field, but "has voltage" will do, yes. Do note @weirdoguy's comment in #9, though. Although...
-
hutchphd reacted to DaveC426913's post in the thread Anyone like “2001: A Space Odyssey?” with
Haha.
Not a lot of people know this but a lot of these scenes were filmed on Earth to save production costs. -
hutchphd reacted to 256bits's post in the thread Undergrad Why is water pressure increased in a plastic bag in a bucket? with Like.
I mentioned capillary action in post 4. It is how the water moves from pore to pore in porous medium, much like paper sucking up water...
-
hutchphd reacted to DaveE's post in the thread Undergrad What's the trick to this "perpetual" marble device? with Like.
But it could be an electromagnet that attracts the ball along the lower horizontal path. OK, I know it isn't. But if you allowed me a...
-
hutchphd reacted to Baluncore's post in the thread Torque to turn a large Beam on a Rotisserie with Like.
@Nick09 You set the working height by pushing a pin through one hole in the black box, that passes through one of many holes, (spaced...
-
Comments. Drilling those diagonal nozzle holes will be difficult and expensive. The differences in machining and metallurgy, between a...
-
In Jomtien
-
If ##g## is small but nonzero, then so is ##p=\rho g h##.
-
hutchphd reacted to jack action's post in the thread Expansion or compression -- which is more energy efficient? with Like.
That is also an isobaric compression, requiring more work. Do you mean like an isothermal expansion? Where both work is released and...
-
hutchphd replied to the thread Graduate Practical demo - Ferromagnetic attraction at interpole boundary.t too thnk the inclusion of remanance in the discusson is likely not fruitfuil. I do think it important, however, to remember that...
-
hutchphd reacted to berkeman's post in the thread Graduate Practical demo - Ferromagnetic attraction at interpole boundary with Like.
It looks like they are called "Spiral Shank Nails", and the grooves afford superior holding power for the nails: I don't think the...
-
hutchphd reacted to berkeman's post in the thread Graduate Practical demo - Ferromagnetic attraction at interpole boundary with Like.
Correct. If the B field is constant in a region enclosing a ferrous object, there is no net magnetic force on the object. There is a...