hutchphd's latest activity
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Yes. It has to have a way of identifying itself, which it can only do by reacting to its own actions. It needs feedback from its... -
Thank you everybody for your help. It all begins to make sense now. Griffiths even puts the equation ##\nabla \cdot (\frac{\hat...
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hutchphd reacted to berkeman's post in the thread M 7.5 Earthquake - 28 km SE of Yumare, Venezuela with
Like.
USAR and DART teams flying in to help. Austere medicine situations are so difficult. -
hutchphd reacted to DaveE's post in the thread How to measure the diameter of a shaft without a caliper? with Like.
Maybe place the shaft on top of the best ruler you have and take a picture with your phone as perpendicular to the ruler as possible...
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hutchphd reacted to A. Neumaier's post in the thread Insights Quantum tomography as an approach to quantum mechanics with Like.
Most things are worthless if you apply inadequate criteria for measuring their worth. The most expensive car is worthless if you want to...
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I don't know how you can say this. We set goals and act to achieve them.
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hutchphd reacted to berkeman's post in the thread Biology Is bioelectricity considered more physics or biology? with Like.
Mentor Update: Unfortunately the newbie OP has turned out to be a spammer using AI to create this spam setup thread. Fortunately, the...
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hutchphd reacted to berkeman's post in the thread High School Why the bottom of a rolling wheel has zero velocity with Like.
Have a look at this article about the Cycloid motion of a point on a wheel: https://en.wikipedia.org/wiki/Cycloid...
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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...
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hutchphd replied to the thread High School Why the bottom of a rolling wheel has zero velocity.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...