A sphere with density ρs and volume V is submerged in a fluid with density ρf , which exerts a buoyant force of magnitude ρfVg on the sphere. Immediately after being released from rest, the sphere moves upward with an acceleration of magnitude a . Which of the following changes would result in an acceleration with greater magnitude immediately after release? a) Releasing the sphere closer to the surface of the fluid b) Increasing the density of the fluid c) Increasing the volume of the sphere but keeping its density constant d) Increasing the air pressure at the surface of the fluid
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Physics, 22.06.2019 15:10
In the circuit, the switch s has been open for a long time and r = 125 kohm. it is then suddenly closed. (a) determine the time constant before the switch is closed. s (b) determine the time constant after the switch is closed. _ s (c) let the switch be closed at t = 0. find the current in the switch as a function of time. (use t for time. express your answer in milliamps and seconds.) i(t) =_
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Physics, 22.06.2019 15:10
Suppose that f : rn → rm and that a ∈ k, where k is a connected subset of rn . suppose further that for each x ∈ k there exists a δx > 0 such that f(x) = f(y) for all y ∈ bδx (x). prove that f is constant on k; that is, f(x) = f(a) for all x ∈ k
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Physics, 23.06.2019 00:00
When flexing to a reflective style, one should be specific, brief and to the point, and maintain a fast and decisive pace?
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Physics, 23.06.2019 00:00
Based on this activity, is kinetic energy always transformed into potential energy?
Answers: 1
A sphere with density ρs and volume V is submerged in a fluid with density ρf , which exerts a buoya...
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