An electron enters a region of uniform electric field with an initial velocity of 67 km/s in the same direction as the electric field, which has magnitude E = 53 N/C. (a) What is the speed of the electron 1.5 ns after entering this region? (b) How far does the electron travel during the 1.5 ns interval?

An electron is initially at rest at distance 0.15 m from a fixed charge Q = -5.00×10-9 C. The electron accelerates. How fast is it moving when the distance is 0.3 m?

At some instant the velocity components of an electron moving between two charged parallel plates are vx=1.6×105 m/s and vy-3.4x10³ m/s. Suppose the electric field between the plates is uniform and given by E what are (a) the electron's acceleration in that field and (b) the electron's velocity when its x coordinate has changed by 2.1 cm? 120N/C). In unit-vector notation, (a)(i (b)(i ~)J. ✓ )it( i THIN OF

phy

provides some pertinent background for this problem. Suppose a single electron orbits about a nucleus containing two protons (+2e), as would be the case for a helium atom from which one of the naturally occurring electrons is removed. The radius of the orbit is 3.09 × 10-11 m. Determine the magnitude of the electron's centripetal acceleration.

Multiple-Concept Example 3 provides some pertinent background for this problem. Suppose a single electron orbits about a nucleus containing two protons (+2e), as would be the case for a helium atom from which one of the naturally occurring electrons is removed. The radius of the orbit is 3.08 × 10-¹¹ m. Determine the magnitude of the electron's centripetal acceleration.

A proton enters a region of uniform electric field of magnitude 79.9 N/C with an initial velocity of 19.6 km/s directed perpendicularly to the electric field. What is the speed of the proton 2.03 μs after entering this region? O 30.0 km/s O 19.6 km/s O 25.0 km/s O 32.5 km/s O 27.5 km/s