The World That Came Together

1. Predict: Positively charged protons in the nucleus of an atom are attracted to negatively charged electrons.

The number of electrons forming a charge cloud around the nucleus is (pick one of the following) greater than; equal to; smaller than the number of protons in the nucleus of the atom.

One of these properties is called an electrical charge. Protons have a "positive" (+) charge, electrons have a "negative" (-) charge, and neutrons have no charge, they are neutral.

First, we will set up the force table. The table comes in three separate pieces the base, stand and table once we connect and fasten all three parts we must use a circular level to make sure the table is balanced. If the force table isn’t balanced then we must adjust the base’s feet to the appropriate levels on each leg till the bubble on the level is centered. We must then assign where the positive & negative x, y axis are on the force table as a point of reference and label them with tape .Then for part I we must apply 1.96 N in the positive x – direction, and 2.94 N in the positive y-direction then we must balance the two with a third force and record the magnitude and direction of it and a draw a diagram showing all three forces. Part II

5. A particle traveled in a straight line in such a way that its distance S

10) If the second positive charge were moved away from the first Positive charge, would this involve positive or negative work.

43. A stone is shown at rest on the ground. A. the vector shows the weight of the stone. complete the vector diagram showing another vector that results in zero net force on the stone. B. what is the conventional name of the vector you have drawn?

9) As you sample the electric field further and further from a charged object, you find that the field strength weakens. Do you think the E field vs. distance relation is an inverse

b. Describe the direction of the force and the meaning of the negative sign in the acceleration value.

5. What’s really meant is that the forces are the same but going in different directions as a mirror image of one another. So when one force is going for example 2 newtons in a positive direction, the same amount is going in the opposite direction.

The balloon is sticking to the wall like a magnet as if it were metal because the electrons in the balloon are attracted the protons in the wall. The electrons move to the far side of the wall leaving the surface with a positive charge. The difference is that the balloon will eventually lose the charge as it leaks through the wall and the balloon falls. The balloon also loses it charges as the air molecules hit transferring the

The magnitude of the forces exerted in the horizontal and vertical directions can be calculated using trigonometry. The total magnitude of the force multiplied by the cosine of its angle with the horizon will calculate the horizontal force. Conversely, the total magnitude of the force multiplied by the sine of its angle with the horizon will calculate the vertical force.

Samples are placed in wells on the gel. A buffer is added, commonly salt water, to act as a conduit for the electrical current. As the electric current is applied, the samples begin to move through the gel depending on the contained molecule’s properties; positively charged particles will move towards the cathode and negatively charged particles will move to the anode.2 Compounds with greater charge or low mass will move through the gel matrix quicker and further.

1. Electric charges attract or repel one another with a force inversely proportional to the square of the distance between them: unlike charges attract, like ones repel.

The outer shell of electrons that orbit the nucleus of an atom is called the valance shell. This is what makes a copper atom conduct. For a copper atom the number of electrons is one. When a charge of electricity is placed in the end of a wire the electrons move into the wire. Since there is only one electron in the valance shell of a copper atom it can be easily dislodged with a small amount of energy causing it to jump to the next atom. This will then cause the valance electron of that atom to jump to the next atom and so forth. This movement happens very fast making it possible for a large number of electrons to move through the wire. An example of a conductive atom is shown figure 1.