1. Electron – Nucleus Applet Pretzelscope

2. Review In the video the glass rod becomes positively charge. When the rod approaches the pretzelscope the leaves separate, the person grounds the scope (leaves fall) then removes the rod, the leaves separate and remain separated. Why does this occur? Draw a diagram of the end result. Remember only electrons are mobile

3. Review A frictionless cart with mass of 80kg rolls down a track from a height of 20 meters from the ground, what is the velocity of the cart when it reaches ground level?

4. Electroscope Draw a diagram representing the charge in the electroscope (assume a negatively charged comb). What is the method used to charge the electroscope? What other method could be used?

5. Review Calculate the work done to move an electron from one point to another in household circuit (120V).

6. An electric field is measured using a positive test charge of 3x10^-6 C. The test charge experiences a force of.12N at an angle of 15 degrees north of east. What are the magnitude and direction of the electric field strength at the location of the test charge.

7. Review Draw the electric field around the two charges.

8. Find the resistance of an aluminum conductor (cylindrical) 2 meters long with a diameter of.25 meters.

9. An electron is deflected upward between the plates. Draw the electric field.

10. Review To increase the brightness of a desk lamp, a student replaces a 60-watt light bulb with a 100-watt bulb. Calculate and compare the current and resistance for the two bulbs. Remember the voltage of a household circuit.

11. Review – Series Circuits Draw and label a circuit diagram for the given image. If the battery is 3V and the bulbs each have an internal resistance of 11ohms, calculate the current within the circuit.

12. Review – Series and Parallel Calculate the equivalent resistance of the circuit, the voltage drop for R1 and R2, and total current.

13. Domains

14. A cannonball is fired from ground level at an angle of 60 degrees and with a speed of 72 m/s. A. What is the time of flight? Neglect friction Review – Projectile Motion

16. Review Draw the magnetic field around the conductor. The x means into the page.