You are asked to verify the statement “for a constant current, there is a direct relationship between voltage and resistance”. Which of the following calculations could you perform to complete this task?

A
An initial voltage of 25.0 V creates a current of 1.25 A. The voltage is decreased to 12.5 V to create a current of 0.625 A.
B
An initial resistance of 30 Ω allows a current of 1.25 A to flow. When the resistance is doubled, the current is 0.625 A.
C
An initial current of 2.6 A is created when 62.5 V occurs. The current is then doubled to 5.2 A and the voltage doubles to 125 V.
D
An initial resistance of 50 Ω allows a current of 2.6 A. When the resistance is doubled, the current is 2.6 A.

Two horizontal plates with infinite length and width are separated by a distance h in the z direction. the bottom plate is moving at a velocity u. the incompressible fluid trapped between the plates is moving in the positive x-direction with the bottom plate. align gravity with positive z. assume that the flow is fully-developed and laminar. if the systems operates at steady state and the pressure gradient in x-direction can be ignored, do the following: 1. sketch your system 2. identify the coordinate system to be used. 3. show your coordinates and origin point on the sketch. list all your assumptions. 5. apply the continuity equation to your system. nts of navier stokes equations of choice to your system 7. solve the resulting differential equation to obtain the velocity profile within the system make sure to list your boundary conditions. check units of velocity 8. describe the velocity profile you obtain using engineering terminology. sketch that on the same sketch you provided in (1). 9. obtain the equation that describes the volumetric flow rate in the system. check the units.

Which best describes what forms in nuclear fission? a. two smaller, more stable nucleib. two larger, less stable nucleic. one smaller, less stable nucleusd. one larger, more stable nucleus

The nuclear potential that binds protons and neutrons in the nucleus of an atom is often approximated by a square well. imagine a proton conned in an innite square well of length 105 nm, a typical nuclear diameter. calculate the wavelength and energy associated with the photon that is emitted when the proton undergoes a transition from the rst excited state (n 2) to the ground state (n 1). in what region of the electromagnetic spectrum does this wavelength belong?