Question

1. What potential difference is needed to accelerate a He+ ion (charge +e, mass 4u) from...

1. What potential difference is needed to accelerate a He+ ion (charge +e, mass 4u) from rest to a speed of 1.1×106 m/s ?

2. Two 2.00 cm × 2.00 cm plates that form a parallel-plate capacitor are charged to ± 0.708 nC .

a) What is the electric field strength inside the capacitor if the spacing between the plates is 1.30 mm ?

b)What is potential difference across the capacitor if the spacing between the plates is 1.30 mm ?

c) What is the electric field strength inside the capacitor if the spacing between the plates is 2.60 mm ?

d)What is the potential difference across the capacitor if the spacing between the plates is 2.60 mm ?

3. To what potential should you charge a 1.0 μF capacitor to store 4.0 J of energy?

4. A proton follows the path shown in (Figure 1). Its initial speed is v0 = 2.7×106 m/s.

a). What is the proton's speed as it passes through point P?

5. Two 2.4-cm-diameter-disks spaced 1.9 mm apart form a parallel-plate capacitor. The electric field between the disks is 4.6×105 V/m .

a) What is the voltage across the capacitor?

b) How much charge is on each disk?

c)An electron is launched from the negative plate. It strikes the positive plate at a speed of 2.3×107 m/s . What was the electron's speed as it left the negative plate?

Please answer completely

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