A positive point charge q is placed at the center of an uncharged metal sphere insulated from the ground. The outside of the sphere is then grounded as shown. Then the ground wire is removed. A is the inner surface and B is the outer surface. Which statement is correct? q6_phys2426_f2024.jpg

Two large, parallel metal plates, each of area A = 2 . 00   m 2 , are oriented horizontally and separated by a distance 3 d  with d = 2 . 00   c m , as shown in Fig. 2.1. If the charge on the upper plate is Q 1 = 0 . 0300   μ C  and the charge on the bottom plate is Q 2 = – 0 . 0700   μ C , what are the magnitudes and directions of the electric fields in the regions above the upper plate, between the two plates, and below the bottom plate? If a third identical plate carrying charge Q 3 = 0 . 0600   μ C  is inserted between the two plates, parallel to them and located a distance d  from the upper plate as shown in Fig. 2.2, (b) what are the magnitudes and directions of the electric fields in the regions above the upper plate, between the upper and middle plates, between the middle and bottom plates, and below the bottom plate? If an electron is released from the bottom plate with a speed v i = 2 . 00 × 10 6   m s moving upward, (c) what is its speed when it reaches the middle plate? If an electron is released from the upper plate with a speed  v i = 8 . 50 × 10 6   m s  moving downward, (d) what is its speed when it reaches the bottom plate? If a grounded conducting wire joins the upper and bottom plates, (e) what are the charges on the upper and bottom plates and (f) what potential difference appears between the middle plate and each of the other plates? (The charge of an electron is q e = – 1 . 60 × 10 – 19   C  and the mass of an electron is m e = 9 . 11 × 10 – 31   k g , ε 0 = 8 . 85 × 10 – 12   C 2 N · m 2 .) fig2_phys2426_f2024.jpg

If the plate separation of an isolated charged parallel-plate capacitor is doubled:

A proton (mass=1.67×10-27 kg, charge=1.60×10-19 C) moves from point A to point B under the influence of an electrostatic force only. At point A the proton moves with a speed of 6.0×104 ms. At point B the speed of the proton is 8.0×104 ms. Determine the potential difference VB-VA.

A positively charged insulating rod is brought close to an object that is suspended by a string. If the object is attracted toward the rod, we can conclude:

What was a significant characteristic of the jazz-rock movement? 

All assignments should be submitted each week before Saturday 11:59pm.

A prefix meaning toward, or in the direction of.

The removal of a plug of tissue for examination is called _____.​

A _____ specializes in the study of microscopic structure of tissues.​