Physics Homework Aid
Physics holds significant importance among the natural sciences, elucidating life's wonders and ranking among the most challenging subjects to master.
QuestionAI is a rich and user-friendly physics problem solver for novice physicists, enabling exploration of atomic properties and interactions, alongside molecular trajectories under various forces. Furthermore, you can delve into the mysteries concealed amidst galaxies with fellow physics enthusiasts. Boldly pose your conjectures and queries to the AI, and authoritative answers will readily emerge.
- b) The results of the investigation are shown below. multirow(2)(*){ time (minutes) cline ( 2 - 5 ) & material A & material B & material C & material D 0 & 60 & 60 & 60 & 60 20 & 34 & 40 & 38 & 36 (i) The scientist said that the 'Wellwarm' material is the best insulator. Which material was 'Wellwarm'? Use the results to help you. Tick the correct box. A B C D 1 mark
- Energy uestions 1. A loudspeaker changes __ energy into __ energy. 2. A man falling down is changing ( __ ) __ energy Sound 3. A simple electrical circuit with a light bulb changes __ energy (in the battery into __ energy (in the wires) and then into __ energy and __ energy (in the bulb) into __ energy.
- Charging by Induction Read from Lesson 2 of the Static Electricity chapter at The Physics Classroom: http://www.physicsclassroom .com/Class/estatics/us/2C.html MOP Connection: Static Electricity: sublevels 5,6, and 7 Review: 1.Fill in the following blanks with the words eiectrons or protons. __ are negatively charged and __ are positively charged. The __ reside in the nucleus of atoms and are tightly bound; they will never leave an alom as sa result of electrostati procedures On the other hand, __ are located outside the nucleus and ate easily removed from or added to aloms. As an object begins to gain or lose __ from its atoms, it becomes positively or neg atively charged. A A positively charged object has more than negatively charged object has more __ than __ __ __ Consider the following process: An uncharged metal pop can is attached to a Styrofoam cup (which acts as an insulating stand). A negatively charged balloon is brought near the pop can. While the balloon is held near, the can 15 touched.When the can is pulled away, the pop can is charged. 2. This process is know I as __ . a. charging by conduction b. charging by induction C. polarization d. grounding 3.When the balloon is held near to the pop can (and before being touched by the hand), the distribution of charge on the pop can is best depicted by diagram __ 4. When the pop can is touched by the hand __ move from the __ to the __ a. protons, hand, can b. protons, can, hand C. electrons, hand, can d. electrons, can, hand 5.This process causes the can to acquire a __ charge. a. negative b. positive C. neutral 6.When the induction charging process is complete, the balloon is __ . a. positively charged b. electrically neutral C. still negatively charged only having fewer excess electrons as before the process began d. still negatively having the same amount of negative charge as it previously had 7.In general, the use of a negatively charged object to charge another object by induction causes th other object to acquire il __ charge. A. positive b. negative
- Charging by Conduction and Grounding Read from Lesson 2 of the Static Electricity chapter at The Physics Classroom: http://www usizd.html physicselassroom.com/C html MOP Connection: Static Electricity: sublevel in the following blanks with the words electrons or protons __ are negatively charged and __ atoms and are are positively charged. The __ reside in the nucleus of lightly bound; they will never leave an atom as a result of electrostati procedures On the other hand, __ As an object begins to gain or lose are located outside the nucleus and are easily removed from or added to atoms __ from its atoms, it becomes positively or negatively charged. A negatively charged object has more __ than __ A positively charged object has more __ than __ Review: 2. A metal sphere is resting upon an insulating stand. A teacher holds a metal bar (with an insulating handle). The teacher uses the metal bar to charge the metal sphere by conduction. Which one of the processes describes what the teacher likely did to charge the sphere by conduction? a. The teacher rubbed the bar and the sphere together. b. The teacher held the bar near the sphere and then touched the sphere with her hand. C. The teacher charged the bar and then contacted it to the sphere. Consider the conduction charging process described below: A: A teacher holds a negatively charged metal barby its insulating handle and touches it to a metal sphere (attached to an insulating stand). B: The teacher pulls the metal bar away and the metal sphere acquires a charge. C: The excess negative charge spreads uniformly about the surface of the metal sphere. 3.Diagram A is the charging step. How does the sphere become charged? a. Electrons move from the insulating stand into the sphere. b. Electrons move from the charged metal bar into the sphere C. Protons move from the sphere into the negatively charged bar. 4.When the metal bar is pulled away in Diagram B, the metal bar is __ a. positively charged b. electrically neutral C. still negatively charged but has fewer excess electrons than it previously did. 5.Diagram C shows the excess negative charge distributed differently than it is in Diagram B. Explain why the excess negative charge would distribute itself as it does in Diagram C.
- Lightning is a form of static electricity. What can you infer about what happens when lightning strikes the ground? Protons and neutrons are transferred from the clouds to the ground. 3 The ground becomes negatively charged. Electrons are transferred from the clouds to the ground. An electric current is establishe