The electrons in a CRT are accelerated through a potential difference of 30kV. Do the electrons move from a region of high potential to a region of low potential, or vice versa? What is the change in kinetic energy of one of the electrons? If the initial speed is very small, what is the final speed of an electron?

An electron is accelerated from rest through a potential difference of 181 V. What is the electron's final speed? (e = 1.60×10-¹9 C, Melectron 9.11x10-31 kg) =

In a television picture tube, electrons strike the screen after being accelerated from rest through a potential difference of 16000 V. The speeds of the electrons are quite large, and for accurate calculations of the speeds, the effects of special relativity must be taken into account. Ignoring such effects, find the electron speed just before the electron strikes the screen

If an electron is accelerated from rest through a potential difference of 1200 V, find its approximate velocity at the end of this process. (e=16x 10-19 Cm,-9.1 x 10-31 kg) ⒸLOX 107m's 14 x 10m's 21x107m's O 25 x 107 m/s MacBook Air

what is superman's speed?

An electron is moved from point A, where the electric potential is VA = −126 V, to point B, where the electric potential is VB = −339 V. What is the change in the electric potential energy?

Consider two points in an electric field. The potential at point 1, V1, is 29 V. The potential at point 2, V2, is 173 V. An electron at rest at point 1 is accelerated by the electric field to point 2. Write an equation for the change of electric potential energy ΔU of the electron in terms of the symbols given.  Find the numerical value of the change of the electric potential energy in electron volts (eV).  Express v2, the speed of the electron at point 2, in terms of ΔU, and the mass of the electron me.

A parallel-plate capacitor is charged to 5000 V. A proton is fired into the center of the capacitor at a speed of 2.8×105 m/sm/s as shown in (Figure 1). The proton is deflected while inside the capacitor, and the plates are long enough that the proton will hit one of them before emerging from the far side of the capacitor.  What is the impact speed of the proton?

How much work is needed to move a proton from a point with a potential of -100V to a point where it is -50V?

During a particular thunderstorm, the electric potential between a cloud and the ground is Valoud - Vground = 2.7 x 10 V, with the cloud being at the higher potential. What is the change in an electron's potential energy when the electron moves from the ground to the cloud?