Open Question: Physics math questions on light.?
Problem~
An elementary particle called a pi meson (or pion for short) has an average lifetime of 2.6 10-8 s when at rest. Suppose that a pion moves with a speed of 0.9c relative to Earth.
(a) Find the average lifetime of the pion as measured by an observer on Earth.
s
(b) Find the average distance traveled by the pion as measured by the same observer.
m
(c) How far would the pion have traveled relative to Earth if relativistic time dilation did not occur?
m
Open Question: 2 geometric seq questions pelase help algebra 2?
Identify the 15th term of the geometric sequence 52, 39, 29.25 …
Open Question: Group Theory - Disjoing Cycles Questions?
of cycles
(2856)(345)(2437)(13) ;
as a product of disjoint cycles and determine its order.
A step by step explanation would be great. Thanks.
Open Question: physics change in variable questions?
(Linear expansion of steel is a = 12 x 10-6 /C°)
2. A pan full of water has a volume of 3.8 liters at 2 °C is heated to 98 °C without boiling, what is the change in volume of the water? (Volume expansion of water is ß = 207 x 10-6 /C°)
3. A square hole is cut out of a sheet of aluminum, the hole has a length and width of 10.000 cm (A = 100.000 cm2) when it is starts out, the sheet is cooled down to room temperature (20 °C) and the new area is 97.8044 cm2) , what was the original temperature of the aluminum sheet? (aAl = 23 x 10-6/°C)
thank you in advance
Open Question: What are some good questions about extinction?
Open Question: AQA AS Chemistry Answers for the examination style questions from the book by Ted Lister & Janet Renshaw?
YES, I have already asked this question and I am aware I am reposting the exact same thing, this is because some smart ars*s assume that because NOT is in capitals, I must be covering something up, and be cheating in homework.. However if you think logically, when a 17 year old is in their easter holidays and studying for AS levels, the last thing I could possibly care about is homework which is not even set for the majority of my subjects (unless it is to revise, which it mostly is) and I am (like anyone else I know in my whole year) focusing completely on revision and this is achieved one way by testing yourself with a textbook and checking your answers. thank you.
Open Question: Help with 2 questions in Science, multiple choice?
make species stronger over time.
select what a species needs.
cause changes in a population.
increase how often favorable traits are passed on.
Fossils can help us
predict the future
prepare for changes in the environment
respond to changes in the environment
learn how species have changed
Open Question: 2 Math questions, please help? thanks!?
2x + y = 8
-x - y = -5
8 + 2x
8 - 2x
-8 - 2x
-8 + 2x
Which point lies in the solution set for the following system of inequalities?
2x + y > 8
x - y < 2
(1, 1)
(3, 4)
(5, -2)
(6, 1)
Open Question: 2008 AP Calculus AB released multiple choice questions only?
Open Question: Math Help?!:D 3 questions ♥?
1. 7m^6n^5 (1 point)
*5
*11
*6
*7
2. 6x^8y^5 (1 point)
*5
*6
*13
*8
3. Match the expression with its name.
6x^3 – 9x + 3 (1 point)
*cubic trinomial
*quadratic binomial
*fourth-degree monomial
*not a polynomial
Open Question: layers of atmosphere questions?
B;what name is given to this point in the atmosphere?
C:what is the temperature of this region?
2: A: at what elevation does the hottest tmperature occur?
B: what name is given to this point in the atmosphere?
C: what is the temperature of this region?
3:why are clouds generally observed to form only in the troposphere?
4: which layer acts like a giant magnet?what does it attract?
5: what does the air in the troposphere do as it heats up from the sun?
6: why is water vapor an important part of the atmosphere?
7:what is at the "top" of the exosphere?
k thanks
Open Question: I need help with these 5 questions on point slope form. Thanks!!(:?
A.
y + 2 = 2(x - 5)
B.
y - 2 = 2(x + 5)
C.
y - 5 = 2(x + 2)
2. Find the equation of a vertical line through the point (-1, 6).
A.
x = 6
B.
x = -1
C.
y = 6
D.
y = -1
3. Find the equation of a line through the points (1, 3) and (6, -7). Express the equation in slope-intercept form.
A.
y = 2x + 1
B.
y = -2x + 5
C.
y = -2x + 7
4. Find the equation of the line that is perpendicular to y = 5 that goes through the point (-3, 2).
A.
y = -1
B.
y = 2
C.
x = 5
D.
x = -3
5. Write the equation of the line with a slope of -2 and goes through the point (-1, 6). Express the equation in standard form.
A.
2x + y = -7
B.
2x + y = -11
C.
2x + y = 4
Open Question: alg2 questions. please help !?
-3y^2+18y-x-24=0
2. Find an equation of the parabola with vertex (2, -4) and focus (2,0)
3. Find the focus of the parabola given by... x^2+6x+5y+14=0
4. Give point to graph hyperbola
-4x^2+y^2-36=0
5. give point to graph hyperbola. (in the following equation x^2/16 and (y-5)^2/4 are fractions)
x^2/16 - (y-5)^2/4 = 1
6. Give points to graph hyperbola
-4x^2 + 25y^2 - 24x - 200y + 264=0
7. The equations of two conics are given below. Choose the correct classification for each, (circle, ellipse, hyperbola, or parabola)
and then provide the requested information (vertex = or center =)
-3y^2+6y-x-2=0
-x^2-9y^2-4x-36y-31=0
Open Question: STATS: A test consists of 10 true or false questions. To pass the test a student must get 70% or better on the?
Out of 2^10 = 1024 possible outcomes:
There is 10C0 = 1 outcome where the student gets 10 correct.
There are 10C1 = 10 outcomes where the student gets exactly 9 correct.
There are 10C2 = 45 outcomes where the student gets exactly 8 correct.
There are 10C3 = 120 outcomes where the student gets exactly 7 correct.
This means there are 1+10+45+120 = 176 passing outcomes.
176/1024 = 17.1875%
Open Question: Help with these addition method questions?
4x+6y=46
2. x+2y=1
3x+4y=0
3. 2x+3y=-9
4x-5y=37
Open Question: Where can I find some good Chromatography/spectroscopy practice questions?
Do you know where I could find some good resources for explaining or extra questions I could do to help me!? Thanks
