Chapter 6: Momentum
... Twice as great force if you do it in 1s than if you do it in 2s, because change in momentum = impulse = FDt. (so half Dt means twice F) c) In a general situation, when does impulse equal momentum? If the object’s initial momentum is zero, then ...
... Twice as great force if you do it in 1s than if you do it in 2s, because change in momentum = impulse = FDt. (so half Dt means twice F) c) In a general situation, when does impulse equal momentum? If the object’s initial momentum is zero, then ...
PRS_W15D2
... Concept Q. Answer: LC Circuit Answer: 2. I is increasing; Q is decreasing With current in the direction shown, the capacitor is discharging (Q is decreasing). But since Q on the right plate is positive, I must be increasing. The positive charge wants to flow, and the current will increase until the ...
... Concept Q. Answer: LC Circuit Answer: 2. I is increasing; Q is decreasing With current in the direction shown, the capacitor is discharging (Q is decreasing). But since Q on the right plate is positive, I must be increasing. The positive charge wants to flow, and the current will increase until the ...
3. Short Channel Effects on MOS Transistors.
... obtained as follows: • The velocity as a function of the electric field, plotted in the last figure can be approximated by: v= ...
... obtained as follows: • The velocity as a function of the electric field, plotted in the last figure can be approximated by: v= ...
Lecture #12, October 21
... spherical capacitor, are often used in practice. In the case of those capacitors C depends on A and d in more complicated way than the one described by equation 3.5.6, but the general conclusion that it depends on area of the plates and separation distance between the plates is still true. As we jus ...
... spherical capacitor, are often used in practice. In the case of those capacitors C depends on A and d in more complicated way than the one described by equation 3.5.6, but the general conclusion that it depends on area of the plates and separation distance between the plates is still true. As we jus ...
Elementary scaling laws for sizing up and down Hall effect thrusters
... Hall thruster physical principles allows to obtain a new thruster characteristics on the basis of a reference thruster. In a recent article 12 , we put forward an original way to extrapolate Hall thruster geometry and magnetic field strength towards both the low and high power ranges. The approach i ...
... Hall thruster physical principles allows to obtain a new thruster characteristics on the basis of a reference thruster. In a recent article 12 , we put forward an original way to extrapolate Hall thruster geometry and magnetic field strength towards both the low and high power ranges. The approach i ...
Woodward effect
The Woodward effect, also referred to as a Mach effect, one of at least three predicted Mach effects, is part of a hypothesis proposed by James F. Woodward in 1990.The hypothesis states that transient mass fluctuations arise in any object that absorbs internal energy while undergoing a proper acceleration. Harnessing this effect could generate a thrust, which Woodward and others claim to measure in various experiments. If proven to exist, the Woodward effect could be used in the design of spacecraft engines of a field propulsion engine that would not have to expel matter to accelerate. Such an engine, called a Mach effect thruster (MET), would be a breakthrough in space travel. So far, no conclusive proof of the existence of this effect has been presented. Experiments to confirm and utilize this effect by Woodward and others continue.