Jun 222014
 

Question by Nina: What courses should I take for Grade 11?
I want to be an English teacher in South Korea.
But, I can’t seem to make up my mind about what courses to take.
I have 5 options.

I’m sure that I’m taking:
• Co-operative Education (Takes up 2 spots)

So, I have 3 spots left to take, these are some of the choices that I might take, what should I take?
○ Science: Biology
○ Science: Chemistry
○ Science: Physics
○ Communications Technology
○Functions: University
○ Introduction to Anthropology, Psychology and Sociology

I know that I’m taking at least one Science course, but which one? :\
Which of these courses can benefit me more?

Best answer:

Answer by c2coy
○ Science: Physics
○ Communications Technology
○Functions: University

What do you think? Answer below!

Dec 252013
 

Question by spookyooky: I want to get a head start in 11th grade by taking Applied Physics before Physics in 12th grade?
By removing Forensic Science and replacing it with Applied physics then I would be able to get a head start in learning Physics before everyone in 11th grade. Because Physics is SUPER hard to learn in 12th grade and by taking applied Physics you can learn the basics.

Then in 12th grade I will take Physics and it would be a little bit easier to learn.

Is this a good idea and will college shine upon this?

Best answer:

Answer by sea_jade7
It should’nt be a problem, I know a lot of kids that do that here in AUS but it may not be exactly the same where you are. Just ask.

Give your answer to this question below!

Oct 132013
 

Question by Jane: How much do colleges look at Regents with a semi-mediocre grade over the SAT 2?
I took the Living Environment Regents Tuesday, and I got a 98. I feel awful now, since everyone was counting on me to get the 100.

If I got an 800 on the Biology M SAT 2, will colleges look over the 98, and care more about the 800? I desperately want to get into a good biology program for neuroscience, but the chances seem slimmer now since I messed up one of the easiest Regents there is.

Best answer:

Answer by Fahjkdjkf Adfjhgas
Hmmm, well remember that the SAT 2′s have pretty big curves, so you could get like an 80% on the SAT2 test and still get an 800, but with your 98, the program will know for sure that you got a 98/100 for sure..So I would actually say your grade is better…

Add your own answer in the comments!

Sep 262013
 

Question by spookyooky: I want to get a head start by taking Applied Physics in 11th grade?
By removing Forensic Science and replacing it with Applied physics then I would be able to get a head start in learning Physics before everyone in 11th grade. Because Physics is SUPER hard to learn in 12th grade and by taking applied Physics you can learn the basics.

Then in 12th grade I will take Physics.

Is this a good idea?

Best answer:

Answer by twiz
well im going to the 11th grade and im taking Advanced Physics…my school doesnt even offer Applied Physics! If I were you, I would just go ahead and take Physics…but that’s if I were you!

Add your own answer in the comments!

Sep 192013
 

Question by spookyooky: I want to get a head start in 11th grade by taking Applied Physics before Physics in 12th grade?
By removing Forensic Science and replacing it with Applied physics then I would be able to get a head start in learning Physics before everyone in 11th grade. Because Physics is SUPER hard to learn in 12th grade and by taking applied Physics you can learn the basics.

Then in 12th grade I will take Physics and it would be a little bit easier to learn.

Is this a good idea and will college shine upon this?

Best answer:

Answer by o_O
It depends based on your preference. If you want to have a foundation and know the basics of physics for next year, then you can do that. Some colleges, especially very selective ones, want students to take a rigorous schedule and take as many hard (honors/AP) courses as possible. If you want to go into a selective college, you shouldn’t take Applied Physics, but a different level. If your school has an Honors or AP Physics course, then take that. But, if you feel the need to prepare yourself a year before, then do that. I hope this helps.

Give your answer to this question below!

Mar 302013
 

Question by Icelandic: did you really learn about evolution in 5th grade?
i was in the smart classes and i remember learning about ancient egypt and accelerated math, but i never remember covering evolution until 10th grade.

p.s. i’m 20 so it wasn’t a significantly long time ago.

Best answer:

Answer by Put on the Full Armor of God
Nope, I didn’t

Consider this

Mysteries In Science

The Young Age of the Earth

http://www.veoh.com/browse/videos/category/faith_and_spirituality/watch/v142573852wTf25Nx#

The Origin of Man by Dr. Duane Gish

http://www.strimoo.com/video/14877425/The-Origin-of-Man-by-Dr-Duane-Gish-Veoh.html

Skull Fossils – As Empty as the Evolutionary Theory

Neanderthals – Smarter Than We Thought

Creation In The 21st Century – Our Young Moon 1 of 3

http://www.youtube.com/watch?v=5i3jtYx7NMk

The “Dark Cloud” of the Big Bang

Why do creationists feel sorry for delusionists?

http://www.liveleak.com/view?i=d4b_1214585502

Today’s World Population Debunks Evolution- Dr. Carl Baugh

http://www.youtube.com/watch?v=wWxqzNM76jE

Creation In The 21st Century — Noah’s Ark and Jesus 1 of 3 (Parallel)

http://www.youtube.com/watch?v=FQg67H4GK1o

What do you think? Answer below!

Aug 122012
 

Question by Mother G: I’m working on a “toy” car for 8th grade science (physics) What gear ratio would be the most ideal?
I tried 5:1, 25:1, 75:1 and others. NOW I JUST WANT SOME DAMN HELP SO I CAN GET A GOOD GRADE ON THIS PROJECT lol. okay…how does she expect us to learn what ratio works when there are like 400,000,000 to try. It would be nice if someone could just tell me what’s best for a ratio and why, isnt that all that really matters. I mean gosh…

Best answer:

Answer by huippi
There is no universal “best ratio”. You have to use different ratios for different projects. If your motor has high rotation speed but it doesn’t have much torque (it has more torque if it harder to stop using hands) you could use higher ratios likes 50:1 (when motor rotates 50 times wheels rotate only once), but if your motor has high torque but low speed you could use lower ratios, even 1:1 over 0.5:1.

You could also measure speed of your car and then grade few ratios or measure how fast your can climb steep hill and then rate all ratios. The last test would maybe produce more useful gear ratio for general use but it always depends how you will use your car.

I am confident that if you will make both tests, plot your measurements and then make your choice based on those measurements you will get good grade.

Know better? Leave your own answer in the comments!

Jun 172012
 

Question by Kendra S: Grade 10 Science Physics Questions…HELP PLEASE?
A cycilist is travelling with a speed of 12m/s when she applies the brakes. After slowing for 3.0 s, her speed has been reduced to 4.0 m/s. The distance she travels during this time is 24 m.

A) What is her acceleration?

B) If she continues braking, how much longer will it take her to stop?

C) If she conintues to travel with her new speed, how far will she travel during the next 3s?

please show all work for future reference please and thank you:)

Best answer:

Answer by Ron J
A accel = change in speed /time taken
=(12-4)/3
B time = change in speed (3 to 0) / accel (from A)
C dist = speed (4m.s) x time (3s)

Add your own answer in the comments!

Jun 032012
 

Question by : Science- physics grade 11 … plz help with these 2 questions … cant solve them?
1) An ice skater pulls three small children, one behind the other, with masses 25 kg, 31kg, and 35kg. Assume that the ice is smooth enough to be considered frictionless

a) find the total force applied to the train of children if they reach a speed of 3.5 m/s in 15s
b) if the skater is holding onto the 25kg child, find the tension in the arms of the next child in line.

2)A 64 kg person is standing on a scale in an elevator. The elevetor is rising at a constant velocity but then begins to slow, with an accelration of 0.58m/s(squared). what is the reading on the scale while the elevator is accelerating?

Best answer:

Answer by Martin A
a) The train has a total mass of 91 kg. For them to reach the speed of 3.5 m/s in 15 s, they must accelerate by about 0.233 m/s^2. Multiply this by the mass, and you have a force of about 21.2 N.

b)
The child’s arms are being used to accelerate the two children behind it. Together, their mass is 66 kg. In order to accelerate them by 0.233 m/s^2, the force on them must be about 15.4 N. This means the tension in the arms of the 25kg child must 15.4 N.

2)
Since the man is in a frame of reference accelerating downwards by 0.58 m/s^2, to account for that, you must add an upwards pseudo-force of 0.58 N/kg. Since the man has a mass of 64 kg, his weight must be 628 N (assuming g=9.81 m/s^2.) However, adding the upwards pseudo-force of 0.58 N/kg subtracts 37 N from his weight. Therefore, the force he applies on the scale is 591 N, and the scale will read 60.2 kg.

Know better? Leave your own answer in the comments!

May 182012
 

Question by : Science – physics grade 11 .. plz help !?
1- what is the difference between static and kinetic frictional forces?

2- a child is riding a merry-go-round that is travelling at a sconstant speed.

a) Is he viewing the world from an inertial or non-inertial fram of refrence?explain ur reasoning

b) what type of force does his horse exert on him to keep him travelling in a circle? In which direction does this force act?

c) In what direction does the child feel that a force is pushing him? explain why this preceived force is called a “fictitious force”

Best answer:

Answer by Souradip
1. Static friction is the force of friction that acts when there is no relative motion between the surfaces in contact. So, in order to make a body move, a force must be applied, which is greater than that of static friction.
But, on the other hand, kinetic friction is the force of friction that acts when there is relative motion between the surfaces in contact.It always tries to stop the motion, hence acting in a direction opposite to the motion.
Static friction also opposes, but it does for the ‘tendency’ of motion, not actual motion.
Finally, the magnitude of static friction is slightly more than that of kinetic friction.
2.
a,b,c) This is a non inertial frame of motion, as the object on the circle feels a pseudo force called centrifugal force away from the center of the circle, to balance the centripetal force which is towards the center of the circle. Actually, the centripetal force keeps the body moving in the circle and is balanced by friction. As, this centrifugal force does not exist in reality, it is called “fictitious or pseudo force”.
For more details, refer to the link below:

http://mechanical-physics.suite101.com/article.cfm/centripetal_forces_and_centrifugal_effects

Add your own answer in the comments!

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