Posts by Jordan

Total # Posts: 1,101

PHYSICS
When you have more pulleys does the mechanical advantage and efficiency increase or decrease?

PHYSICS
Does mass affect mechanical advantage in any way?

PHYSICS
So the pulley has more mechanical advantage and the incline has more efficiency?

PHYSICS
Which simple machine has more mechanical advantage a pulley or a inclined plane? PlEASEE HELP SUPER CONFUSED

math
B is the midpoint of segment AC. AB = 5x and BC = 3x + 4. Find AB, BC and AC.

Math
If a faucet is dripping at the rate of 7.5 drops per minute and there are 20 drops in a milliliter, how many liters of water are wasted in a 30-day month?

Math
An access ramp enters a building 1 meter above ground level and starts 4 meters from the building. How long is the ramp? If it is not possible, write “not possible” and explain why it is not possible.

AP English Lang. & Comp.
My Assignment: Read the book, 'Animal Farm' by George Orwell. After reading the book, create a composition that examines the similarities and differences between the Russian Revolution and the events in this novel. Research any other 'rebellions' that have ...

Chemistry
Why is iron not used to make surgical and other knives: Explain your reasons.

Chemistry
What transitional metal might be suitable to manufacture indestructible spectacle frames: Explain your choice.

Chemistry
What is a cathode and an anode? In the formula for table salt: NaCl, which part of the compound is a cathode and which part is the anode? ****** I don't get any of this stuff!?! D: Due tomorrow!! ))):

physical science
166.66

Chemistry
Is this answer correct? Calculate the molar concentration of sodium hydroxide solution if 36.00mL of this solution were required to neutralize 25.00 mL of a 0.2000 M solution of hydrochloric acid. .0288M??????

algebra
Find the value of f(0) if f(x) = x2 - 3x + 2 / x + 1

algebra
Simplify the expression: 3x^2 − 3y + 8x − 5x^2 + 12y

chemistry
explain the observed temperature change upon mixing ethanol and cyclohaxane

science
what variables can affect the number of eggs laid by a chicken?

science
ok thanks

science
what variable can affect the attendance at a football game?

chemistry
How many grams of magnesium oxide are produced when 40 grams of oxygen react with magnesium

Physics
1. A certain playground merry-go-round is essentially an 90-kg iron disk 2.0 m in radius. Two children, each with a mass of 46 kg, are originally standing on opposite sides of the disk near its outer edge. The merry-go-round is turning essentially without friction about a ...

geometry
oh okay thanks

geometry
Which of the following are measurements of the sides of a right triangle? Select one of the options below as your answer: A. 3, 4, 5 B. 28, 26, 12 C. 17, 14, 6 D. all of the above

geometry
what is the area of a regular polygon with 13.8 area and 6 sides

calculus
When doing a question such as: What is the area of the region enclosed by the graphs of f(x) = x - 2x^2 and g(x)= -5x? what is an easy way to tell if a function is above or under the other, so I can tell which function to put first in the integral. MUCH APPRECIATED!

math
Ben has 15 puzzles and 27cds. When he takes a trip, he likes to bring one puzzle and one cd . How many trips can he take with a different puzzle and cd pair

MATH
A bike club wants to make license plates for bikes. Each license plate has a letter followed by a digit. How many different license plates can be made?

math
Lets try this one last time What is the value for the numerals with letters: 245,189 2=a 5=b 8=c

Math
i will retype this question. What is the value for the numerals with letters. 2 4 5, 1 8 9 a.......b........9.....

MATH
WHAT IS THE VALUE FOR THE NUMERALS WITH LETTERS 2 4 5, 1 8 9 a b c

math
What is the value for the numerals with letters. 245,189 a b c

MATH
One side of a rectangle is 53cm another, another side is 29 cm. What is the perimeter of the rectangle

Chemistry
An atom it ground state contains 18 electrons. How many of these electrons are in orbitals with l=0? a.4 b.2 c.8 d.6

Math
How much did you invest each month at 6.60% compounded monthly if 25 years later the investment is worth 228190.50?

language
From a story,how do you draw a conclusion

Physics
b.) work=Force x Distance x Cos(angle) Work = (3.4kg)(9.8m/s^2)x Cos(90) Work = 0J

math
In the square if part A is 1/4 of the square and part C is 1/10 of the square, what percent of the square is part B?

Math
Write an equation for the table: x: 8,16,24,32 y: 1,2,3,4

Math
Write an equation for the table: x: 8,16,24,32 y: 1,2,3,4

Math
Write an equation for the table: x: 8,16,24,32 y: 1,2,3,4

Math
Write an equation for the table: x: 8,16,24,32 y: 1,2,3,4

Math
Write an equation for the table: x: 8,16,24,32 y: 1,2,3,4

Chemistry
The amount of energy released by burning a fuel source, measured in energy per mass, is called fuel value. If all the energy obtained from burning 1.3 pounds of butane (fuel value 10.85 kcal/g) is used to heat 122 kg of water at an initial temperature of 20.9 degC, what is the...

General Chemistry (College LvL)
When a 4.00g sample of KBr is dissolved in water in a calorimeter that has a total heat capacity of 2.908 kJ x K^-1, the temperature decreases by .230 K. Calculate the molar heat of KBR

Physics
A 6-kg bowling ball with a radius of 14 cm is spinning about a vertical axis (with its center of mass motionless) at an initial rate of 3 turns per second. Friction with the floor, however, causes the bowling ball to rotate more and more slowly until it stops after about 22s. ...

Physics
Displacement vector [3, 0 , -2] and [-1,5,2]displacement vector , both measured in meters. Find the components of the cross product of these vectors.

physics
At a certain time, a 55-kg person is 25 m due north of you and is walking at a speed of 1.2 m/s exactly southwest. What are the magnitude and direction of this person’s angular momentum about you?

physics
travelling at 90km/hr except for a 30 minute rest stop. Average speed for the trip is 78km/hr. what is the total travelling time and what is the total distance travelled?? thanks

Basic Math
The link you posted made it clear! Thank you Thank you!

Basic Math
A student claims that 2/3 = 6/7 because if you add 4 to both the top and the bottom of a fraction, the fraction does not change. How do you respond? I am a bit confused. Don't you need to have a common denominator?

Science
When u kick a stone your foot exerts force on the stone and the stone exerts a force ? in size and ? in direction on your foot

3rd grade math hw help!
1.) A E L V 2.) F H T Z I N Y 3.) K M W 4.) X 5.) Because the remaining letters has curves or are round. Polygons are made out of straight lines and not round

STUDY UNIT: THE PRINTED WORD
Novel

Chemistry
The following information is given for ethanol, C2H5OH, at 1atm: boiling point = 78.4oC Hvap(78.4oC) = 38.6 kJ/mol melting point = -115oC Hfus(-115oC) = 5.02 kJ/mol specific heat liquid = 2.46 J/goC At a pressure of 1 atm, what is H in kJ for the process of condensing a 40.8 g...

math 10
how do i work out the answer to: "how many integer values are there for k for which 4x^2 + kxy - 9y^2 is factorable?"

math
each box has 10 pencils . how many pencils do 3 boxes have ?

math
how to isolate a variable with a component. 60+80x1 over 2 to the exponent of "T" over 30+20 solve for T

math
how to isolate a variable with a component. 60+80x1 over 2 to the exponent of "T" over 30+20

8th grade Math
You divide by -1

Math
A set of data has a mean of 35 and an outlier of 100. You find the mean without the outlier. Which of the following best describes your new mean?

english
help me please!!!!! The manner in which action is presented indicates verb: mood. tense. voice.

calculus
How do you find the derivative of (-2(x^2+1))/((x^2-1)^2) ? I have the answer which is: (4x(3+x^2))/(x^2-1)^3) I can't figure out my mistake when I'm doing it though. Could you solve it step by step?

Social Studies
How have the uses of Bamboo changed since 1980 until now?

MATH
how do i solve this into a proportion, 3oz for $1.65; 5oz for x dollors

Physics
Consider two vectors where F1 = 40 N, F2 = 57 N, and \theta _{1} = 240o and \theta _{2} = 25o, measured from the positive x-axis with counter-clockwise being positive. What is the magnitude of the equilibriant?

8th grade math
i need help

math
what fraction strips would you use yto find the sum of 3/8 and 4/8? explain

cal 1
Find the dimensions of the rectangle of largest area that has its base on the x-axis and its other two vertices above the x-axis and lying on the parabola. (Round your answers to the nearest hundredth.) y = 7 - x^2

Cal
Find the slope of the tangent line to the curve at (2,1) x/y + x^2y^2 = 6

10th grade
720 grams

physics
A boy pulls his little brother in a little red wagon. He keeps the handle horizontal to the ground. His little brother and the wagon weigh 40 kg. How much tension will the boy have to place on the wagon's handle to get it moving from a standstill?

English
In Invisible Man, the main character disproved of Tod Clifton and didn't like that he was selling sambo dolls. Why would he then make Clifton seem like a hero, and give a grand speech about him at his funeral? Was it because he wanted to impress others with his oratorical ...

Physics
2.23

History
When was the evolution of the socio- political milieu during the colonial period including Protestant Christianity's impact on colonial social life

Cal
A plane flying horizontally at an altitude of 3 mi and a speed of 480 mi/h passes directly over a radar station. Find the rate at which the distance from the plane to the station is increasing when it is 6 mi away from the station. (Round to the nearest whole number.)

math
a deposit of $2500 grew to $3325 after six years. what is the final value of a deposit of $7500 at the same interest rate for the same period of time?.

Chemistry
Use a combustion reaction of liquid ethanol in air as a source of work, assuming temperature is 25 deg C, air pressure is 1atm and all products are gases with partial pressures of 10atm each. How high can one lift a 1000kg weight by burning 100g of ethanol? *oxygen is 21% (by ...

Physics
A baseball is popped straight up into the air and has a hang-time of 6.25 s. Determine the height to which the ball rises before it reaches its peak.

Chemistry
you have them in order already, from weakest to strongest.

Physics-Kinetic energy
the only formula you will need for both of these questions is : E = 0.5mv^2 E = kinetic energy (J) m = mass of object (kg) v = velocity of object (m/s) you should be able to go from here, just sub in the values.

physics
use the formula F=ma remember m has to be in kg

Earth Science
the tilt of the earth and the rotation of the earth around the sun. try to picture the scenario, as the earth revolves around the sun with the tilt that it has, half of the year the northern hemisphere will be closer to the sun and the other half of the year the southern ...

Physics kinetic energy
because v is the only thing changing the value of m is not relevant. to find out what would happen to the energy we compare the differences in v ie 10^2 = 100 5^2 = 25 since the new v value is a quarter of the previous value the answer is (d) alternatively, your reasoning ...

Physics acceleration
a = (v-u)/t v = final velocity (m/s) u = initial velocity (m/s) t = time taken for change in velocity (s) a = acceleration (m/s^2)

maath
draw the graph of y = 3^x then look to see where y = 9, this is where 3^x = 9

Physics
On an open-reel tape deck, the tape is being pulled past the playback head at a constant linear speed of 0.372 m/s. (a) If the radius of the film taken up so far (as shown in the upper part of the drawing) is 0.0576 m, find the angular speed of the take-up reel. ____ rad/s (b...

geometry
How would you figure this question out? :The measures of two sides of a triangle are 8 and 11. Use an inequality to express the range of the third side, m.

physics
An electric drill starts from rest and rotates with a constant angular acceleration. After the drill has rotated through a certain angle, the magnitude of the centripetal acceleration of a point on the drill is twice the magnitude of the tangential acceleration. What is the ...

Chemistry 1
What is the minimum amount of a 6.0 M solution of sulfuric acid necessary to produce 25 grams of hydrogen gas if the molar ratio in the chemical reaction is a 1:1

Physics
A force of 165 N is needed to keep a small boat moving at 2.57 m/s. What is the power required to keep the boat moving at the steady speed? >> I understand that P=Fv but I don't understand the second question. If the resistive force of the water increases with the ...

Physics
A force of 165 N is needed to keep a small boat moving at 2.57 m/s. What is the power required to keep the boat moving at the steady speed? >> I understand that P=Fv but I don't understand the second question. If the resistive force of the water increases with the ...

MATH
SHOW IN A SKETCH 3/5 OF AN HOUR

Physics
A ball is attached to one end of a wire, the other end being fastened to the ceiling. The wire is held horizontal, and the ball is released from rest (see the drawing). It swings downward and strikes a block initially at rest on a horizontal frictionless surface. Air ...

Advanced Algebra 1
A polygon has a perimeter of 24mm. Find the new perimeter after a scale factor of 1/4 is applied?

College Physics
A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. The total mass of the wagon, rider, and rock is 96.5 kg. The mass of the rock is 0.250 kg. Initially the wagon is rolling forward at a speed of 0.460 m/s. ...

science
how many hm are in 726.5 dm ?

physics
The drawing shows a version of the loop-the-loop trick for a small car. If the car is given an initial speed of 4.5 m/s, what is the largest value that the radius r can have if the car is to remain in contact with the circular track at all times?

CALC
Ok, I was half right. The formula works for cubes and squares if you think of the area of a square being 4r^2, and the volume of cube being 8r^3, where r is the radius and x=2r

CALC
Nevermind, I lied.

CALC
You have to start from the origin. Try calculating it in terms of r, where x=2r. You will get the right answer

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