Hey, I was just looking for some help, if you or anyone could help me review over this draft of my assignment. I've put a lot of time into it. I would really someone to pre-review before submitting it. Thank you so much.

I would like help on all of them but the ones I had the biggest question were #6 & #7

Week 5: Homework for Chapter 8, 9, 1O #1: State the charge (positiveeutralegative) for each part of an atom. a) Proton: have a positive charge b) Electron: have a negative charge c) Neutron: have no chargeeutral #2: Coulomb's law and Newton's law of gravitation are similar in a lot of ways. a) Write the formula for each Coulomb: GM) r: F=k Newton: _ 1mm; F Gr' b) Make a couple notes on why they are similar. They are both inverse-square laws, meaning the force is inversely proportional to the square of the distance. If the distance between the particles is doubled, the force drops by a factor of 4. c) How are the two laws different in terms of attracting and repulsing forces? Coulomb's Law and Newton's law of gravitation differ in those opposite electrical charges attract, and like charges repel. However, there is only one avor of mass, and gravity is solely an attractive force. (Incidentally, the lack of negative mass also means that gravity canmt be shielded - so, alas, there will never be antigravity shields!) #3: If you need help on this watch this chapter's lecture. Considering Coulomb's law. how does the magnitude of electrical force between pair of charged particles change when the particles are moved: a) Twice as far apart? The force reduces to one-quarter when the particles are twice as far apart in) Three times as far apart? And to one-ninth when three times as far apart. #4: Ohm's law states that current is equal to the voltage divided by the resistance. What is the effect on current through a circuit of steady resistance when? a) The voltage is doubled. The current gets stronger because the "pressure" of the voltage is larger b) Both voltage and resistance are doubled? It stays the same because the increase of both cancels each other out #5: what is the function of the third prong on the plug of an electrical appliance? The third prong connects the device directly to the ground wire. The ground wire's role is to transmit all excess electrical energy directly into the ground. #6: why is a bird perched on a high-voltage wire safe. even though the wires are not insulated? (Answer in terms of voltage and electric potential) When a bird is perched on a single wire, its two feet are at the same electrical potential, so the electrons in the wires have no motivation to travel through the bird's body. #7: say that the bird perched on a high-voltage wire reaches over with its foot and touches another wire. Why is it in trouble? (Answer in terms of vohage and electric potential) If the bird stretches out a wing or leg, and touches the second wire, it can open a path for the electrons to electrocute the bird. #8: In what way is the rule for the interaction between magnetic poles similar to the rule for the interaction between electric charges, but different from gravitational attraction? lee poles repel, unlike poles attract, and the force is proportional to the inverse square of the distance between two poles. #9: why is iron magnetic and wood not magnetic? The magnetic elds of individual iron atoms are strong enough to align the magnetic elds of neighbor atoms. The atoms in wood have much weaker magnetic elds. #10: what happens to the direction of the magnetic eld about an electric current when the direction of the current is reversed? The magnetic eld reverses direction at every point. A clockwise pattern of concentric circles becomes a counterclockwise pattern of concentric circles and vice versa. #11: why is the magnetic field strength inside a current-carrying loop of wire greater than the eld strength about a straight section of wire? The magnetic eld of each segment of wire in the loop, due to electrons moving in the wire, adds together inside the loop, thereby making the eld become bunched-up. #12: What effect does Earth's magnetic field have on the intensity of cosmic rays striking Earth's surface? It reduces the intensity. Still, "secondary" cosmic rays reach Earth's surface, greatest at magnetic poles, and decreases away from the poles, smallest at equatorial regions. #1 3: a) Is it correct to say that a generator produces energy? Generators do not produce energy. b) Defend your answer. Instead, they convert it from some other form to electrical energy. #1 4: Dene these parts of a wave: a) Period: The horizontal rows in a periodic table. Elements gain one proton for each space moving left to right across the table. group. b) Amplitude: The maximum distance that the particles of a wave's medium vibrate from their rest position. c) Wavelength: The distance from any point on a wave to an identical point on the next wave. d) Frequency: The number of waves produced in a given amount of time. #115: in what direction are the vibrations relative to the direction of wave travel: a) In a transverse wave? At right angles to the direction of wave travel. b) In a longitudinal wave? Parallel to the direction of wave travel. "Motion is along the direction of the wave rather than at right angles to it." #15: why do troops "break step\" when crossing a bridge? Troops break step when crossing a bridge as bridge may collapse if the natural frequency of the bridge matches with the frequency of the steps of troops. To avoid resonance, troops break their steps on a bridge. #17: distinguish between constructive and destructive interference. Constructive interference happens when waves add up to make a larger amplitude. Destructive imerference happens when waves add up to make a wave with a smaller amplitude. #18: When sound becomes louder, which wave characteristic is probably increasing: frequency, wavelength, amplitude, or speed? Amplitude #19: how does a certain note sung by a singer cause a crystal glass to shatter? If the singer sings a note equal to the natural or resonant frequency of the glass, the glass will vibrate at a higher amplitude, shaking the glass until it shatters