Twelfth grade, senior year, or grade 12 is the final year of secondary school in most of North America. In other regions, it may also be referred to as class 12 or Year 13. In most countries, students are usually the ages of 17 and 18 years old. Some countries have a thirteenth grade, while other countries do not have a 12th grade/year at all. Twelfth grade is typically the last year of high school (graduation year).
Should I take grade 12 biology??
Should I take grade 12 biology?
I'm in grade 11 and I want to go into either physics or engineering but everyone tells me I should take as many sciences and maths as I can. If I go into engineering it probably won't be anything that has to do with living...
Homework Statement
Three point charges, q₁= -5.00 μC, q₂= -4.00 μC, and q₃ which is negative are arranged as shown on three corner of side a=0.500 m. The direction of the forces on q₁ is at +20.0° with respect to the + x axis. Calculate the magnitude of q₃. The diagram looks something like...
Homework Statement
SPH4U University Grade 12 Physics - Coulomb's Law?
I have to determine the answer using Coulomb's Law. Please help me figure out how to do this !
Three point charges, q₁= -5.00 μC, q₂= -4.00 μC, and q₃ which is negative are arranged as shown on three corner of side...
TO EVERYBODY, THIS IS NOT MY HOMEWORK. I HAVE A TEST TOM and these are some questions that I just don't know how to do, I gave attempts to some and some I am just missing something. Plus, these questions are from all over the unit so its not my homework. I need it done asap. So then I know how...
Homework Statement
In the Bohr model of the hydrogen atom, the electron revolves around the nucleus. If the radius of the orbit is 5.8 z 10^-11 m and the electron makes 6.6 x 10^15 r/s, find;
a) the acceleration of the electron
b) the magnitude of the gravitational force of attraction...
Hi everyone!
1. Homework Statement
α=90°
β=31°
\gamma=121°
2. Homework Equations
I need to determine the magnitude of one of the sides?
3. The Attempt at a Solution
I don't understand how to solve for the magnitude.
Determine a formula for the sum of
\sum iri-1
in terms of n and r.
I am stuck on this, i don't understand what to do with the "i" infront of the ri-1i know that \sum ri-1 = (1-rn ) /1-r
all sums are for an index of i=1 to n
I...
Mars travels around the Sun in 1.68 Earth years in an approximately circular orbit with a radius of 2.18 x 10^8 km. Determine the mass of the Sun.
Fairly easy, I know most of how to do it but I keep getting wrong answers. Help me out a bit? Thanks!
The Question
The Planet V has a year lasting 360 days. In the same star system is the Planet X. The Planet X has half the mass and triple the radius. A planet X year would be approximately _____ days
The attempt at a solution
Givens:
Tv= 360days
Tx= ?
mv = mv
mx = 1/2mv
rv = rv
rx = 3rvI...
1. The meteoroid Perturbation passes near the planet Conniption which has a mass of 5 * 10^25kg, a charge of +10^6 C and has a radius of 10500km. The meteoroid has a mass of 10 tonnes and a charge of +5 C. The meteoriod has an altitude of 9500km and a velocity of 10km/s. The planets magnetic...
[b]1.Nasa fires a 1 tonne space probe, from a stable orbit of altitude 13,620km using a giant rail gun. The rail gun provides the probe with 9.97165*10^10 J of additional kinetic energy. Determine if the probe has enough velocity to escape the Earth's gravity well. The Earth's mass and radius...
I'm doing the review in my textbook and there are no answers for the multiple choice. http://scc.scdsb.edu.on.ca/Students/onlinecourses/Sikora/sch4u/v12/95.pdf I'm doing questions 1 to 11 and I was hoping I could get some answers to see if mine are right? THANK YOU!
1)d
2)c
3)b
4)d
5)a...
i'm currently taking grade 12 physics. my teacher is really nice, but i got say that she sucks at teaching, and the textbook we're using is worse.
can anyone here help me with understanding the basics theories and equations I need for this test?
Hard Grade 12 Trig. Questions :(
Homework Statement
http://img831.imageshack.us/img831/8389/daumequation13263429629.png
Homework Equations
No equations are required.
The Attempt at a Solution
http://img845.imageshack.us/img845/9519/34851996.png...
Homework Statement
2 cars collide at an intersection.
one car which has a mass of 1,400kg has a velocity of 45 km/h[S];
the other car has a mass of 1,300kg and has a velocity of 39 km/h[E]
The cars has an inelastic collision. What are their velocity after the collision
Homework...
Homework Statement
Okay, the assignment involves electron beams of various voltages, currents, and radii
Basically, the situation is, several of these beams were measured for the aforesaid values.
The values as follow are in the following order - Voltage (J/c) - Current in Helmholtz Coils (A) -...
Homework Statement
A plane heads 20° north of east at 200 m/s. The wind blows 60° north of east at 50 m/s. What is the resultant velocity of the plane?
Homework Equations
Δv= v2-v1 or Δv= v2+(-v1)
The Attempt at a Solution
I know you have to solve for the x and y, but I don't know...
Homework Statement
Let p be a polynomial function with p(a)= 0 =p'(a) for some real a. Which of the following must be true?
A) p(x) is divisible by x+a
B) p(x) is divisible by x^2+a^2
C) p(x) is divisible by x^2-a^2
D) p(x) is divisible by x^2+2ax+a^2
E) p(x) is divisible by x^2-2ax+a^2...
Hey everyone,
I am going to McGill University in the fall, and I want to major in Physical Chemistry second year. However,I didn't take physics in high school because... well, when I was 16 years old and out of Grade 10, I didn't know what I wanted to do for a living, and not taking physics...
1. The Project
I must build a boat that is able to propel itself via elastic or gravitational energy 1.0 metres. After it has moved 1.0m, it must automatically shoot a projectile 2.0m perpendicular to the movement.
2. Rules
The boat cannot touch the bottom of the 10 cm deep pool.
Any...
This is Grade 12 Physics lab assigned to me :
Bonus: Performing the lab+making a conclusion to answer the research question.
I thought whole day but can't think of any research question with box of matches.
Could anyone please help me out with this?
Look at picture attached
I need help with part A
Homework Statement
B=0
I = 10 A
Distance from Wire A to C is 0.05 m
Distance from Wire I to C is 0.15 m
I of wire i= ?
Homework Equations
B= U ( I / 2pi r )
The Attempt at a Solution
Ok so from Wire A to C
B1 = U (I...
Homework Statement
Right hand rule to determine
Homework Equations
There is no equation
The Attempt at a Solution
At point 1 and 5 there is no induced current, at point 2 and 4 there is a induced current.
I'm sorry, I didn't really know where to post this question, so I posted it here, because it is the closest to Data Management, I think.
There are 19 students in the classroom. The students are seated in a circle.
Each student shakes the hand of the person sitting to the left and the right of...
I have this so called in class physics fair and its pretty much a project. But I'm having trouble thinking of a topic that is not of the common ones other people have done. Of course it has to be related to the grade 12 physics course and be within a small range budget?
The grade 12 course...
Homework Statement
A new pilot with Canjet is asked to find the resultant displacement of his jet if it flies at 345km/h @ 225 degrees into a wind that is blowing at 40km/h from the West. Use the 'construction line' method, components method, AND law of sines and cosines.
Homework...
Homework Statement
A land surveyor walks 5200m @ 330 degrees and then turns and goes an additional 3000m @ 180 degrees. Find his final displacement using the law of sines/cosines.
Homework Equations
I know the law of sines is a/sinA = b/sinB = c/sinC, and the law of cosines is a^2=b^2...
Problem:
A 78.5kg man is about tocompletea bungee jump. If the bungee cord has a spring constant of 150 N/m, determine the period of oscillation that we will experience.
m= 78.5 Kg
k= 150 N/m
T=?
Relevant equations:
T= 2(pi)√(m/k)
The attempt at a solution
T= 2(pi)√(78.5kg/150...
Homework Statement
Constants Given
Colombs constant = 9 x 10^9
Charge of Proton = 1.6 x10^-19
Proton rest mass=1.673 x 10-27
Charge of electron = -1.6 x 10^-19
Electron Rest Mass = 9.11 x 10^-31 kg
Homework Equations
On the attachement
The Attempt at a Solution
On the...
Physics Grade 12 HELP! Electricity Unit
I have attached the question paper with this post
Homework Statement
v=2 x 10 ^ 5 m/s
Volatage=250 or 500?
Constants Given:
Coulombs constant = 9 x 10^9
Charge of proton/electron = 1.6 x 10^-19/-1.6 x 10^-19
Proton rest mass 1.673 x 10^-27 kg...
Homework Statement
A rocket for use in deep space is to have the capability of boosting a pay load ( plus the rocket frame and engine) of 3 metric tonnes to an achieved speed of 10000m/s with an engine and fuel designed to produce an exhaust velocity of 2000m/s.
a) How much fuel and...
A bomb initially at rest on a smooth, horizontal surface is ex*ploded into three
pieces. Two pieces fly off horizontally at a 60°angle to each other, a 2.0 kg piece at
20 m/s and a 3.0 kg piece at 12 m/s. The third piece flies off horizontally at 30 m/s.
(a) Determine the direction of...
Should I choose Mcmaster or Waterloo? lots say waterloo is good for engineering, but I don't know if it is the best university in Canada when it comes to nuclear physics. Mcmaster has a nuclear reactor. So I really want to know which one will be the best choice. Please help me out, I am stuck...
Two people kick a soccer ball at the same time. One person with a force of 100 N [N 25 degrees W]. The result is the ball moving 200m/s^2 [S 15 degrees W]. With what force did the second person kick the ball.
I'm not sure how to do this question, any help is appreciated greatly.
Thanks in...
Hello!
I have started to take a correspondence grade 12 physics course from www.ilc.org (affiliated with Toronto District School Board).
After my first two weeks of working through the course I have covered Kinematics as well as Motion in Two Dimensions- Projectile Motion. My findings so...
1. Determine approximate solutions for each
equation in the interval x ∈ [0, 2π], to the
nearest hundredth of a radian.
a) sinx - 1/4 = 0
3. I don't know what to do... I am supposed to asnwer in radian like this --> (π/4 , 4π/6 etc..)
Homework Statement
When an F-18 jet lands on the runway, it's position is defined by s(t)=189t-t^7/3 meters after t seconds
calculate the braking time
calculate the deceleration when the jet stops ( i think she means immediately before?)
Homework Equations
derivative
The...
I know I know. This question must be uber easy in the eyes of you genius'. But the truth is - I'm taking grade 12 physics when I practically failed grade 11(well, I got 51...I wasn't trying, I swear!) so getting some of the concepts can get very confusing...and frustrating! Nonetheless, I need...
1. The problem statement,
Last year in physics i did good on every test but the kinematics test.
i got a 69% on it...
Now i am in Grade 12 physics and my Kinematics Test is tuesday.
We are given a formula sheet.
I don't want to get another 69% on a kinematics test, i want to do good, like 75...
Homework Statement
2 men with mass of 100kg each, are on a stationary cart with mass of 300 kg.
The cart has no friction withthe tracks. The cart can only go north and south.
1st man starts runnin at speed of 5 m/s(reletive to cart) towards north and jumps off the cart. Otherman runs with...
1.
A 1000 kg plane is trying to make a forced landing on the deck of a large 2000 kg barge at rest on the surface of a calm sea. The only frictional force to consider is between plane's wheels and the deck, and this braking force is constant and equal to one-quarter of the plane's weight...
Hello,
I"m struggling with physics at the Grade 12 level. I'm in my 30's and haven't looked at physics or trigonometry for at least 20 years! Has anyone ever used a tutor before and had success with this method of learning? I'm considering hiring a tutor, but I'm not sure how often I should...
Homework Statement
A tree house has a vertical "fire pole" of smooth metal, designed for quick exits. A child of mass 35.7 kg slides down the pole with constant acceleration, starting from rest. The pole is 3.10m high. The journey to the ground takes 2.00s.
a) what is the magnitude of the...
Hello, I am new. I am soo despret. I want to become an Architect but I'm dumb. I aws doing fine getting 84% in physics university 11, but now, I am taking physics 12 university and I don't get the answers right 65% of the time. I am so despret for help. My parents cannot afford to get me a...
We were in Calculus class, and the problem sin(x)/n was left on the board from the last class. The teacher meant to put an x in the denominator I guess. We solved it like so:
sin(x)/n
The n terms cancel out
sin(x)/n = six = 6
Whatddya think?
Homework Statement
Solve the following equation:
(2sinx-1)(tanx-1) = 0
0<x<2pi
The answers are listed as :
pi/6, 5pi/6, pi/4, 54/4
Homework Equations
I'm told the unit circle is used.
The Attempt at a Solution
I'm attempting to learn this from dijointed class notes for...
Hello Physics Forum, I am new member and this is my first Thread. :smile:
While onto the problem. I have been stuck on this particular for well over a week. I do not get the excat answer and to me my solution seems logically.
Homework Statement
An Australian bushman hunts kangaroos with a...
Homework Statement
A sunbather, drifting downstream on a raft, drives off the raft just as it passes under a bridge and swims against the current for 15min. She then turns and swims downstream, making the same total effort and overtaking the raft when it is 1.0km down stream from the bridge...
Physics SPH4U-A Lesson 4 Question #15
A race-car driver is driving her car at a record-breaking speed of 225km/h. The first turn on the course is banked at 15 degrees, and the car's mass is 1450kg.
a) Calculate the radius of the curvature for this turn.
b) Calculate the centripetal...