Can someone lead me on the right rack here?
A 150 g ball moving at 0.45 m/s in the + x-direction is subject to a 0.25 N force in the - y-direction for 3.0 s. A)Find the magnitude of the ball's momentum change. B)Find the ball's final speed. C)Find the angle between the ball's final velocity and the positive x direction. i have a feeling there is going to be trig involved in C. on A, i do not know which formula to use. i tried the momentum formula, but it did not work :(. on B, i think i can solve that if i had the right answer for A. can someone assist me? i need an explanation. :O...
In Spanish II, can someone tell me if I'm right about the irregular present participles? here it is: ar-ando..?
You are talking about the "gerundio" (equivalent to English Present Progressive). AR verbs take sufix "-ando" ER and IR verbs take "-iendo" or "-yendo": Caer (to fall) = caYendo (not "caiendo", in this case, the "i" becomes Y, to avoid three vowels in a row; that's the only reason) Perder = perdiendo Llover = lloviendo Traer = traYendo (again Y, not 'i", to avoid three vowels in a row) Past progressive in English is formed by verb "to be" and the present progressive of another verb. The equivalent in Spanish would be the past tense of ESTAR and the "gerundio" of another verb. But, have in mind Spanish have two past tenses: the imperfect and the preterite. So you can have: I was walking = Yo estaba caminando (imperfect) or Yo estuve caminando (preterite) She was sleeping = Ella estaba durmiendo or Ella estuvo durmiendo They were eating = Ellos estaban comiendo or Ellos estuvieron comiendo EDIT About "leer", same reason as in "caer" and "traer". You have to avoid three vowels in a row. So, the correct form is "LEYENDO", not "leiendo", Indeed, due to Spanish phonetics, each time you have a vowel "i" between two other vowels, this "i" becomes a Y. It is easier to pronounce. Sorry about REIR. It is an irregular verb, so it doesn't follow the normal rules (the rules above). I found some of the irregular gerunds (between them "reir") reir (to laugh) = riendo sonreir (to smile) = sonriendo dormir (to sleep) = durmiendo morir (to die) = muriendo poder (can or must)= pudiendo seguir (to follow) = siguiendo freir (to fry)= friendo hervir (to boil) = hirviendo invertir (to invest) = invirtiendo despedir (to fire, to dismiss) = despidiendo vestir (to dress) = vistiendo
Do you have a crush on someone at school right now?
I guess I shall take my occasion here.Yes, I do and perhaps it should not be that way.I’m currently in the 4th year of high school (17 years old, turning 18 in 6 months) here in Italy and I’ve known this girl since the 1st year. I’m quite an introvert and it takes a lot of time for me to develop even just trust for another person, by a lot of time I mean at least 3 years of staying together 5 hours a day.We are quite the opposite from each other: she’s really pretty and I can’t say I’m even barely good looking; she’s fun and talkative, I’m quite boring (as referred by many of my classmates).We do not know each others so well, but that’s mostly my fault, I have to admit. I’ve actually asked her out once (first time ever), she accepted and we talked. What about? Oh pretty standard things: politics, teenagers and their (in my opinion) stupid habits and other random stuff.We are good friends or at least I consider her such. I’m not an interesting person for the average guy/girl that walks by. I’m, as my mother called me once, quite anonymous. You don’t recognize me, you don’t see me, you don’t notice me.If I’m called anonymous by my mother, how can I even hope to successfully make a move? If I answer that question, my relationship status might change for the first time.P.S: Why did I say “[…] perhaps it should not be that way.”? Because her brother was a classmate my brother’s. Not sure it would be a nice thing. I can’t tell you why it would be bad, but it just does not sound right.UpdateIt has been almost 7 months since I have written this and an update seems only fair. As said in the comments, we shall remain good friends but nothing more. It’s perfectly fine and we moved on. She has an amazing boyfriend now and I have a new crush, again in my school.She’s 1 year younger than me and I know her fairly well. She’s nice, fun and understanding. When we spent some time together (has happened quite a few times) we always had great fun or at least we hang out well.I asked her out and already confessed what I feel for her. She was not expecting it but reacted rather well. She accepted my invite and soon we are going out together (not sure if I’d call it a “date” since I do not know how she feels).The first crush helped me quite a bit. I really hope from the newer one will rise something great, I doubt though.
Can someone tell me if I got these right? (Significant Figures)?
The number of significant digits is NOT just numbers to the right of the decimal point. The significant digits are all the digits reported (if correctly reported) We use scientific notation to make sure the viewer understands how many digits are significant, as in the following example 6000 with 1 significant digit would be 6 x 10^3 6000 with 2 significant ditits would be 6.0 x 10^3 6000 with 3 sig dig - 6.00 x 10^3 In your first problem 13.45 x 10^5 has 4 sig dig 23.87 x 10^4 has 4 sig dig their sum is 1583700 expressed with the least sig dig (4) would be 1.584 x 10^6 (Rounded) so you see, it's not the decimal location. If you do the math without scientific notation, you will see why 1345000 the 1 3 4 5 are sig dig + 238700 the 2 3 7 8 are sig dig = 1583700 only the 1 5 8 4 (rounded) come from sig dig, the 7 comes from adding a significant 7 to a non-significant 0 so the sum (7 +0) cannot be significant, but you can round using it. in the next problem 6.4 10^ has 2 sig dig 2.0 10^ has 2 sig dig (that's why there is a zero after the decimal, it wouldn't be there if it wasn't significant.) the answer should have 2 sig dig- this may have been sheer luck due to the fact that the calculator truncates trailing zeroes whether they are significant or not. but only because when you divide 640 / 200000 you get .003200000 so how many zeroes should you keep - ans- however many as are significant. how many are significant? none. I can't show you here, but when you work these problems without the scientific notation, underline the significant digits and you'll understand better how many are needed in the answer. Any significant digit computed with another significant digit yields a significant digit answer. A significant digit computed with a non-significant digit results in an uncertain, non-significant digit.
Can someone tell me what the name of this song is and who sings it?
Here are parts of the lyrics.... "If ever there was a heaven on earth its here in your arms" and "If ever there was a feeling so right it the way i feel tonight" it was sung in the first episode of the suite life of zack and cody by the mom during the wedding. PLEASE PLEASE PLEASE help i have been trying to find it for days!!! thanks!
Can someone tell me my grade from my test scores?
first add up the most possible point you can get in all. that would be 420. then add up all the scores you got. that would be 345. then turn it into a fraction [345 over 420] then divide, 345 divided by 420=0.821428571 multiply by 100.=82.14285714 then round. 82% so you would have a B right now
I'm having a hard time right now. Can someone give me a hug?
Received this notification a hour back on Pinterest,Saw Your question just now,Now that's what is called, Co-incidence,a must write now :)So, Let me start with what I saved to By Board : Spread LoveSo,Hope you feel good.Now,Listen to this,Rachel Platten - Stand By You (Official Video)The lines I love the most from this Song <3Hands, put your empty hands in mineAnd scars, show me all the scars you hideAnd hey, if your wings are brokenPlease take mine so yours can open too'Cause I'm gonna stand by youOh, tears make kaleidoscopes in your eyesAnd hurt, I know you're hurting, but so am IAnd love, if your wings are brokenBorrow mine so yours can open too'Cause I'm gonna stand by you,Even if we're breaking down, we can find a way to break throughEven if we can't find heaven, I'll walk through hell with youLove, you're not alone, 'cause I'm gonna stand by youand, Let me remind you,Keep Smiling. Stay Happy.Love.( Image source : Pinterest )
Can someone tell me in their own words the 10 amendments of bill of rights.. plz?
1. freedon of speech, press, religion, right to assemble 2. right to have guns 3. right to exclude troops from lodging in your home 4. right to be free from search or detention without sufficient showing of cause 5. right to not incriminate yourself. and to hearing to determine criminal guilt 6. right to an attorney who is not a terd 7. right to jury trial for civil cases 8. right to process before the govt kills you, right to bail 9. just because it is not listed here, does not mean it is not a right that you have to protection from the govt. 10. state govts keep whatever powers have not been given to the fed or taken from the states...or the people get those powers.
What does right of way mean?
Generally, Say 2 cars are at a junction. The first car reaching it has right of way over the over driver, Meaning they should move off first. And on a motorway. Any lane on your right, Meaning the overtaking lane has right of way over drivers on their left as they are travelling faster and have right of way over the car on the left.