The two parallel plates shown below create a uniform electric field. A proton is travelling due east at 4.50 x 105 m/s when it is at the left plate. The plate at the left has a potential V₁-825 V and the plate at the right has a potential V₂=125 V. What is the speed of the proton when it reaches the plate on the right? Give your answer in m/s x 105 to 2 decimal places. Do NOT include units in your answer. √2

The potential on the surface of a solid charged conducting sphere is V0=24V. What is the electric field and electric potential inside the sphere, respectively?

An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated by a distance of 2.20 mm. (a) If a 15.0 V potential difference is applied to these plates, calculate the electric field between the plates. 33 Your response differs from the correct answer by more than 100%. kV/m (b) What is the surface charge density? 80.45 Your response differs from the correct answer by more than 10%. Double check your calculations. nC/m² (c) What is the capacitance? 3.1 pF .(d) Find the charge on each plate. Enter a number. differs from the correct answer by more than 10%. Double check your calculations. pC

What potential difference is needed to accelerate an electron from rest to a speed of 1.2x106 m/s? Express your answer to two significant figures and include the appropriate units. μÅ AV= Value Submit Request Answer Ć Units ?

Two large aluminum plates are separated by a distance of 2.0 cm and are held at a potential difference of 195 V. An electron enters the region between them at a speed of 3.2 × 105 m/s by passing through a small hole in the negative plate and continues moving toward the positive plate. Assume the electric field between the plates is uniform. 1. What is the electron’s speed, in meters per second, when it is 0.1 cm from the negative plate?  2. What is the electron’s speed, in meters per second, when it is 0.5 cm from the negative plate?  3. What is the electron’s speed, in meters per second, when it is 1.0 cm from the negative plate?  4. What is the electron’s speed, in meters per second, when it is 1.5 cm from the negative plate?  5. What is the electron’s speed immediately before it strikes the positive plate?

An electron has an initial speed of 3.0 × 106 m/s. What potential difference is required to bring the electron to a stop?

A parallel-plate capacitor has capacitance C0 = 8.00 pF when there is air between the plates. The separation between the plates is 1.20 mm. Express your answer with the appropriate units. Part A: What is the maximum magnitude of charge that can be placed on each plate if the electric field in the region between the plates is not to exceed 3.00×104 V/m? Part B: A dielectric with K = 2.70 is inserted between the plates of the capacitor, completely filling the volume between the plates. Now what is the maximum magnitude of charge on each plate if the electric field between the plates is not to exceed 3.00×104 V/m?

The graph in the figure shows the variation of the electric potential V (measured in volts) as a function of the radial direction T (measured in meters), For which range or value of T is the magnitude of the electric field the largest? (m) O from r = 3 m to r= 4 m from T=0 m to r= 1 m from r = 1 m to r= 2 m O at r= 4 m O at r = 3 m from T = 6 m to r= 8 m O from T = 4 m to r= 6 m Submit Previous Answers Request Answer

An electron passes through an area of changing potential as shown below. At point A, the electron has a speed of 7.2 × 106 m/s. What is the approximate speed of the electron at point B? A +10 V 7 +20 V B +30 V

At a distance of 0.40 m from a proton, calculate its electric field strength. At this distance, what is the electric potential?