tag:blogger.com,1999:blog-2214461049219354662.post4906446793737723002..comments2024-03-28T13:08:35.581+04:00Comments on Physics Reference: 9702 June 2014 Paper 21 Worked Solutions | A-Level PhysicsUnknownnoreply@blogger.comBlogger21125tag:blogger.com,1999:blog-2214461049219354662.post-64089697830502827192018-11-30T22:50:18.383+04:002018-11-30T22:50:18.383+04:00explanation updatedexplanation updatedAdminhttps://www.blogger.com/profile/03708185681043991662noreply@blogger.comtag:blogger.com,1999:blog-2214461049219354662.post-73937257715257655352018-11-29T23:00:40.369+04:002018-11-29T23:00:40.369+04:00In Q2, Kindly tell how to Resolve Component of v=8...In Q2, Kindly tell how to Resolve Component of v=8.5 . The incline planes confuse me with their angles and axis . Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2214461049219354662.post-90833097474242463992017-10-17T20:55:39.601+04:002017-10-17T20:55:39.601+04:00a lower resistance means that the current flowing ...a lower resistance means that the current flowing in the circuit is greater.<br /><br />Loss volt = Ir<br />So, this increasesAdminhttps://www.blogger.com/profile/03708185681043991662noreply@blogger.comtag:blogger.com,1999:blog-2214461049219354662.post-81749731112252741842017-10-17T14:47:10.547+04:002017-10-17T14:47:10.547+04:00For Question 6c) How does a lower resistance in ci...For Question 6c) How does a lower resistance in circuit mean there are more less volts? Please help :) Anonymoushttps://www.blogger.com/profile/09835798833714942816noreply@blogger.comtag:blogger.com,1999:blog-2214461049219354662.post-28999473658122529382017-09-27T17:18:05.496+04:002017-09-27T17:18:05.496+04:00No, we should consider the component along the slo...No, we should consider the component along the slope.Adminhttps://www.blogger.com/profile/03708185681043991662noreply@blogger.comtag:blogger.com,1999:blog-2214461049219354662.post-6333453688002104432017-09-26T10:08:08.329+04:002017-09-26T10:08:08.329+04:00In question 2b i should not we use fvcos(9)??In question 2b i should not we use fvcos(9)??aanoreply@blogger.comtag:blogger.com,1999:blog-2214461049219354662.post-23379593808159601832016-04-23T17:18:13.334+04:002016-04-23T17:18:13.334+04:00In a qualitative question, air resistance is alway...In a qualitative question, air resistance is always considered, unless stated otherwise in the question.<br /><br />Car moving down a frictionless surface:<br />Chemical --> Kinetic + Work against air resistanceAdminhttps://www.blogger.com/profile/03708185681043991662noreply@blogger.comtag:blogger.com,1999:blog-2214461049219354662.post-23401804427246770482016-04-23T13:20:47.302+04:002016-04-23T13:20:47.302+04:00Thats my question
When do we know air resistance i...Thats my question<br />When do we know air resistance is being considered in a QUALITATIVE question.<br />If a car moves down a frictionless surface . Write the energy conversions.<br />How are we supposed to guess it is or is not??<br /><br />Pleaseeee replyyy. Im anxiously waiting. Thankyou:)123456https://www.blogger.com/profile/11121550232520267120noreply@blogger.comtag:blogger.com,1999:blog-2214461049219354662.post-60282126444958548522016-04-23T01:03:27.798+04:002016-04-23T01:03:27.798+04:00This comment has been removed by the author.123456https://www.blogger.com/profile/11121550232520267120noreply@blogger.comtag:blogger.com,1999:blog-2214461049219354662.post-15354036416006652282016-04-22T14:19:22.278+04:002016-04-22T14:19:22.278+04:00This comment has been removed by the author.123456https://www.blogger.com/profile/11121550232520267120noreply@blogger.comtag:blogger.com,1999:blog-2214461049219354662.post-51932331339390590982016-04-22T13:59:12.466+04:002016-04-22T13:59:12.466+04:00Assuming heat loss is only due to friction, then y...Assuming heat loss is only due to friction, then yes.<br /><br />But if air resistance is being considered, you need to account for the work done against it.Adminhttps://www.blogger.com/profile/03708185681043991662noreply@blogger.comtag:blogger.com,1999:blog-2214461049219354662.post-34144682798066742322016-04-22T00:17:46.558+04:002016-04-22T00:17:46.558+04:00Just one LAST thing
Frictionless means no road fr...Just one LAST thing<br /><br />Frictionless means no road friction but there might be air resistance.<br /><br />So if they state frictionless <br />I should TOTALLY ignore energy loss as heat?<br /><br />THANKYOU SO MUCH!!!! ^.^<br />123456https://www.blogger.com/profile/11121550232520267120noreply@blogger.comtag:blogger.com,1999:blog-2214461049219354662.post-77800741081360263112016-04-21T22:04:45.122+04:002016-04-21T22:04:45.122+04:00It depends. Sometimes they may mentioned the slope...It depends. Sometimes they may mentioned the slope to be frictionless, so you don't include the heat due to friction.<br /><br />But if not, I believe you should account for friction.Adminhttps://www.blogger.com/profile/03708185681043991662noreply@blogger.comtag:blogger.com,1999:blog-2214461049219354662.post-105256797159796152016-04-21T15:23:43.355+04:002016-04-21T15:23:43.355+04:00A random question.
Will be glad if youll help. Th...A random question. <br />Will be glad if youll help. Thanks. :)<br /><br />If they ask to answer qualitatively about energy conversions of a ball moving down a ramp.<br /><br />Will they always mention if friction is present or not?<br />Because if it is GPE will be converted to KE and heat<br />If its not GPE will only be converted to KE.<br /><br />Will they always make clear if its with friction or without friction?<br /><br /><br />Pleasee replyy. This question really has been confusing me. 123456https://www.blogger.com/profile/11121550232520267120noreply@blogger.comtag:blogger.com,1999:blog-2214461049219354662.post-9745518518027305182016-04-18T18:19:08.757+04:002016-04-18T18:19:08.757+04:00So either data about friction/air resistance will ...So either data about friction/air resistance will be given in the question or it will be calculated in the question in one of the parts of the question.<br /><br />If its not asked to be calculated or given in question we neglect it.<br />Correct?<br /><br />Pleasee answer. Thankss :)123456https://www.blogger.com/profile/11121550232520267120noreply@blogger.comtag:blogger.com,1999:blog-2214461049219354662.post-61383620665720007192016-04-17T19:01:39.172+04:002016-04-17T19:01:39.172+04:00Thanks a bunch.Thanks a bunch.123456https://www.blogger.com/profile/11121550232520267120noreply@blogger.comtag:blogger.com,1999:blog-2214461049219354662.post-69143012163258290132016-04-17T17:32:56.561+04:002016-04-17T17:32:56.561+04:00Yes. We cannot account for it if we don't have...Yes. We cannot account for it if we don't have enough data.<br /><br />However, there can be a question where you need to explain why ....<br />and the answer could be that air resistance needs to be taken into account ...Adminhttps://www.blogger.com/profile/03708185681043991662noreply@blogger.comtag:blogger.com,1999:blog-2214461049219354662.post-26974012415747431702016-04-17T11:36:08.637+04:002016-04-17T11:36:08.637+04:00So instead of saying air resistance is negligible ...So instead of saying air resistance is negligible if they said that it was a smooth plane. <br />No information about air resistance is given. We would have neglected air resistance then? <br />Is that how we go about? 123456https://www.blogger.com/profile/11121550232520267120noreply@blogger.comtag:blogger.com,1999:blog-2214461049219354662.post-27942784514952367112016-04-17T11:30:48.151+04:002016-04-17T11:30:48.151+04:00No information has been given about friction in th...No information has been given about friction in the question. So, it has be neglected.Adminhttps://www.blogger.com/profile/03708185681043991662noreply@blogger.comtag:blogger.com,1999:blog-2214461049219354662.post-89373975817265636112016-04-16T12:48:26.024+04:002016-04-16T12:48:26.024+04:00Question 2 B
Why is road friction ignored? Question 2 B<br />Why is road friction ignored? 123456https://www.blogger.com/profile/11121550232520267120noreply@blogger.comtag:blogger.com,1999:blog-2214461049219354662.post-69880015695213871882016-04-14T19:46:04.850+04:002016-04-14T19:46:04.850+04:00This comment has been removed by the author.123456https://www.blogger.com/profile/11121550232520267120noreply@blogger.com