Sunday
December 11, 2016

Posts by Jordan

Total # Posts: 1,001

Physics
A stone is thrown from ground level at 72 m/s. Its speed when it reaches its highest point is 46 m/s. Find the angle, above the horizontal, of the stone's initial velocity. Answer in units of degree
October 6, 2015

physics
In lacrosse, a ball is thrown from a net on the end of stick by rotating the stick and forearm about the elbow. If the angular velocity of the ball about the elbow joint is 30.3 rad / s and the ball is 1.35 m from the elbow joint, what is the velocity of the ball?
October 5, 2015

Science
Be nice Ms.Sue
October 2, 2015

physics
Only two forces act on an object (mass=4.41 kg), as in the drawing. Find (a) the magnitude and (b) the direction (relative to the x axis) of the acceleration of the object.
October 1, 2015

technology
d
October 1, 2015

physics
Two forces A and B are applied to an object whose mass is 12.3 kg. The larger force is A . When both forces point due east, the object's acceleration has a magnitude of 0.443 m/s2. However, when A points due east and B points due west, the acceleration is 0.280 m/s2, due ...
October 1, 2015

Math
240
September 30, 2015

physics
50
September 27, 2015

math
Assume you have a basket full of socks, which have the following properties: 6 of the socks have blue stripes 8 of the socks have red polka dots 16 of the socks have blue polka dots 10 of the socks have red stripes (a). If you take one sock out of the basket, what is the ...
September 24, 2015

math
A student takes a multiple choice quiz with 12 questions and 5 alternatives per question. Unfortunately, this student has no idea what any of the answers are, so he randomly selects an alternative for each question on the exam. Using this “blind guessing” strategy, ...
September 24, 2015

Math
The radius of a sphere is 3 cm . the radius is increased by a linear scale factor of 5:2 . calculate the surface area of the new sphere
September 22, 2015

Chemistry
a 7.83g sample of hydrocyanic acid contains 0.290g and 4.06g of nitrogen. Find the mass of carbonin a sample of HCN with a mass of 3.37g.
September 13, 2015

physics
A cannon is mounted on a tower above a wide, level field. The barrel of the cannon is 20 m above the ground below. A cannonball is fired horizontally with an initial speed of 900 m/s. Assuming air resistance can be neglected, approximately how long will the cannonball be in ...
September 9, 2015

Physics
An initially motionless test car is accelerated uniformly to 135 km/h in 8.08 seconds before striking a simulated deer. The car is in contact with the faux fawn for 0.695 seconds, after which the car is measured to be traveling at 87.5 km/h. What is the magnitude of the ...
September 8, 2015

Chemistry
A 2.20 g-sample of a compound containing carbon, hydrogen, and oxygen is burned and it produces 4.61 g CO2 and 0.94 g H2O. What is the empirical formula of this compound? (i.e., C2H4O) I found the mass of Carbon (4.61/44g)*(1 mol C/1 mol CO2)=.1047 I found the mass of Hydrogen...
September 8, 2015

physics
An unsuspecting bird is coasting along in an easterly direction at 4.00 mph when a strong wind from the south imparts a constant acceleration of 0.300 m/s2. If the acceleration from the wind lasts for 2.70 s, find the magnitude, r, and direction, θ, of the bird\'s ...
September 8, 2015

physics
35 m
September 8, 2015

physics
On the Moon, the acceleration due to gravity is 1.62 m/s^2. How far would a 19 g rock fall from rest in 6.5 seconds if the only force acting on it was the gravitational force due to the Moon?
September 8, 2015

Chemistry
A 2.20 g-sample of a compound containing carbon, hydrogen, and oxygen is burned and it produces 4.61 g CO2 and 0.94 g H2O. What is the empirical formula of this compound?
September 7, 2015

physics
You throw a baseball directly upward at time t = 0 at an initial speed of 13.3 m/s. What is the maximum height the ball reaches above where it leaves your hand? At what times does the ball pass through half the maximum height? Ignore air resistance and take g = 9.80 m/s2.
September 7, 2015

physics
12.06 for speed 2.01 for time
September 7, 2015

physics
While standing at the edge of the roof of a building, you throw a stone upward with an initial speed of 7.65 m/s. The stone subsequently falls to the ground, which is 11.1 m below the point where the stone leaves your hand. At what speed does the stone impact the ground? How ...
September 7, 2015

Math
How do I solve for the limit of ((x^500)-1)/(x-1)?
September 2, 2015

Math
How do I find the vertical asymptote of f(x) ={x^4}/{x^2 + 8}?
September 2, 2015

Math
Nevermind I found the answer by graphing
August 31, 2015

Math
The definition of the derivative, applied to f(x) = 7^x, results in the formula f'(x) = k \cdot 7^x where k = lim of ((7^h-1)/(h) h approaches 0 The value of the constant k cannot be determined using the usual tricks for evaluating limits. Using your calculator, ...
August 31, 2015

Science
What elements have the highest ionization energy and why?
August 30, 2015

Chemistry
How many atoms are present in 0.3333 mol of CO2? I know I need to use the conversion factor of 6.021x10^23 but do I just multiply that times .3333? =2.007?
August 30, 2015

Chemistry
The mineral cassiterite is a compound of tin and oxygen. Chemical analysis of cassiterite shows that the mass percentages of tin, Sn, and oxygen, O, are 78.8% and 21.2%, respectively. Determine the formula of this compound. I found the molar mass and correct equation SnO4. Sn-...
August 30, 2015

Chemistry
A compound is found to contain 50.05 % sulfur and 49.95 % oxygen by mass. What is the simplest (empirical) formula for this compound? They said to assume that it is 100 grams. I found the molar mass. S- 32.06 0-16.00 But now I don't know what to do. Please help. Thank you!
August 27, 2015

Math
1:3
August 27, 2015

math
2/5-2/15+3/10
August 26, 2015

Chemistry
What is a good website to practice limiting reagent problems?
August 25, 2015

Math
what is a good website to practice limits?
August 25, 2015

Math
How do I know if a graph has removable continuity, jump, or infinite? What is the difference?
August 19, 2015

Science
The combustion of a compound which contains only C and H yields 2.58 g of CO2 and 0.53 g of H2O. What is the empirical formula of the compound? Molar mass of CO2= 44.01 Molar mass of H20= 18.01 2.58g/44.01=0.586 mol CO2 .53g/18.01=.0294 mol H2O I Don't know where I went ...
August 19, 2015

math
A room is 12 feet long and 10.5 feet wide. A scale model of the room is 3.5 feet wide. What is the area of the scale model? 10.3 square feet 14 square feet 36 square feet 122.5 square feet
July 20, 2015

Geometry
If mADC = 7x+3 and mDCB = 5x+9, then mDAB = ?
May 14, 2015

capacitor
Did you get the answer to this?
May 4, 2015

SOLVE -MATH
A physics exam consists of 9 multiple choice questions and 6 open-ended problems in which all work must be shown.If an examinee must answer 6 of the multiple- choice questions and 3 of the open-ended problems, in how many ways can the questions and problems be chosen?
April 30, 2015

Algebra 2/Statistics
From a squad of 12 cheerleaders, 10 will assemble themselves into a 4-level pyramid at the Homecoming rally. 1.) How many different combinations of cheerleaders can be used to build the pyramid? For this I got 12C10=66......Right or Wrong? 2.) The coach decides that Alexis ...
April 30, 2015

Algebra 2/statistics
On a fair 6-sided die, each number has an equal probability p of being rolled. when a fair die is rolled n times, the most likely outcome (the mean) is that each number will be rolled NP times, with a standard deviation of sqrt NP(1-P). Brandon rolls a die 200 times. He will ...
April 30, 2015

maths
One number is greater than another by 4, their sum is 32. What are the two numbers? Write a function which could solve this for any two numbers (x and y) with any difference between them.​
April 20, 2015

Science
Actually that's perfect. Haha Thank You Rykr :D
April 2, 2015

Science
What is the effect of the slope of an incline of a surface on an object’s speed?” PLEASE do not answer...I just need help understanding it. Thank You
April 2, 2015

Math
How do you find the surface area of a triangular prism?
March 24, 2015

excel
what formula would be used to calculate the calories from fat for food items which is equal to the grams of fat multiplied by 9
March 19, 2015

Math
The opposite sides of a square, a rectangle, a parallelogram, and a rhombus are what type of triangle?
March 17, 2015

biology
Hello, I am having trouble with a question on my homework. Even after reading through my notes and textbook I am still not sure what the answer is. I think the answer is the new paramecium is able to reproduce sexually and asexually.Here is the question: After sexual ...
March 15, 2015

calculus
If 3x^2 + y^2 = 7 then evaluate the second derivative of y with respect to x when x = 1 and y = 2. Round your answer to 2 decimal places.
March 10, 2015

Accounting
On December 31, 2013, Ruby Inc. issued 3,000 $1,000 par value bonds with a stated rate of 6% and a 10-year maturity. Interest is payable semiannually on June 30 and December 31.
March 8, 2015

grammar
preposition
February 25, 2015

Calculus 2
Let a thing rod of length a have a density distribution function p(x)+10e^(-.1x), where x is measured in cm and p in grams per centimeter. A) if the mass of the rod is 30 g, what is the value of a? B) For the 30g rod, will the center of mass lie at its midpoint, to the left, ...
February 23, 2015

Physics
A certain force gives mass m1 an acceleration of 13.0 m/s2 and mass m2 an acceleration of 3.6 m/s2. 1) What acceleration would the force give to an object with a mass of (m2-m1)? 2) A certain force gives mass m1 an acceleration of 13.0 m/s2 and mass m2 an acceleration of 3.6 m...
February 21, 2015

Physics
A 5.0- kg concrete block rests on a level table. A 3.7- kg mass is attached to the block by a string passing over a light, frictionless pulley. If the acceleration of the block is measured to be 1.0 m/s2, what is the coefficient of friction between the block and the table?
February 21, 2015

Physics
Two boxes, A and B, are connected to each end of a light vertical rope. A constant upward force 90.0N is applied to box A. Starting from rest, box B descends 11.0m in 3.50s . The tension in the rope connecting the two boxes is 30.0N a) What is the mass of box A? b) What is the...
February 17, 2015

AP European History
How did medieval Europe lay the groundwork for the rebirth of Europe (Renaissance)? What conditions existed that allowed Europe to evolve out of medieval conditions?
February 11, 2015

Social Studies
Thx GSG I got 100 3/3 on my test thanks
February 9, 2015

Physics
Three people pull simultaneously on a stubborn donkey. Jack pulls eastward with a force of 68.5 N, Jill pulls with 61.3 N in the northeast direction, and Jane pulls to the southeast with 111 N. (Since the donkey is involved with such uncoordinated people, who can blame it for ...
January 31, 2015

Math
Leena bakes a loaf of bread. She eats 1/8 loaf of bread and give 1/6 of it each of her 3 friends. What fraction of the loaf of bread is left?
January 27, 2015

gifted math
There's are 4 kids in the class 6x4=24
January 26, 2015

health
It's considered to be an advantage to have lungs with increased capacity, because with increased capacity A. anaerobic exercise is easier. B. the lungs can better exchange oxygen and waste products in the blood. C. the chest looks more "buff." D. the lungs will ...
December 28, 2014

english
During the long afternoon, Daryl searched for his car keys. He searched under the bed, beneath the sofa cushions, and emptied his jacket pockets. soryy..
December 14, 2014

english
Which one of the following words is not an object of a preposition? A. afternoon B. cushions C. pockets D. bed c?
December 14, 2014

english
Which one of the following words represents an object of a preposition? A. afternoon B. Daryl C. sofa D. trouser b?
December 14, 2014

English
(1) Brenda would have liked to have taken her vacation at the beach. (2) However, the weather forecast on the television called for rain. (3) Also, her fiancé, Max, wanted to vacation in the mountains. (4) After a heated discussion, Brenda and Max decided to compromise...
December 14, 2014

English
Thanks :P
December 14, 2014

English
In which one of these sentences does an adverb modify a verb? A. Lucy quickly hid behind the tree. B. The dress was terribly old. C. Jacob was a very smart boy. D. Mr. Dodge moved in an extremely slow manner. I think it's A?
December 14, 2014

History
Two methods used to control annual floods were ______________
December 11, 2014

math
12 3/4 feet long by 11 1/2 feet wide is how many square feet
December 8, 2014

Physics
DonHo, Thank you! That was spot on and was correct. -A physic's student a year later
December 1, 2014

math h
Darcy, Jason and Maria share $268. Jason has $20 more than Darcy and Maria has twice as much money as Jason. How much money do Darcy and Jason have altogether?
November 19, 2014

math
Gerry had a total of 30 pens and pencils. He decided to trade with his friends all of his pens and pencils. If he traded every pen for 2 pencils, he would have 48 pencils in all. How many pens and how many pencils did he have before the trade?
November 19, 2014

math
Juan and rachel have the same number of marbles. Rachel gives away 10 marbles and Juan gives away 22 marbles. Rachel then has 3 times as many marbles as Juan. How many marbles did each of them have at first
November 19, 2014

math
Add the hundredths. 4 hundredths + 7 hundredths = ____ hundredths. Regroup the hundredths.
November 17, 2014

Chemistry
What is the minimum amount of 6.0M H2SO4 necessary to produce 19.0g of H2(g) according to the reaction? 2Al(s)+3H2SO4(aq)→Al2(SO4)3(aq)+3H2(g)
November 14, 2014

math
Mr. Sims has 198 oranges. he packs them into 5 crates. Use rounding to estimate the number of oranges in each crate.
November 12, 2014

math
A basket with 12 apples has a mass of 3105 grams. The same basket with 7 apples has a mass of 1980 grams. Each apple has the same mass. What is the mass of the basket?
November 12, 2014

math
Sally and Marta had the same number of postcards. After Sally sold 18 of her postcards, Marta had 4 times as many postcards as Sally. How many postcards did each girl have to begin with?
November 12, 2014

Chemistry
2 moles of ideal gas at 300K, initial volume 25 L, are compressed under an external pressure at 3600 torr. Assuming the temp and the internal energy of gas do not change, what is the entropy change of the gas? (Assume the heat flow is reversible)
November 4, 2014

java programming
Create a java program that will calculate the current grade in a classroom. The program should ask for 5 grades as well as total point value per grade available.
November 3, 2014

computer science
I would like to create a class for finding the voltages of 1, 2 or even 4 batteries. The Class can be called BatteryVoltage with a default voltage value of 1.5 (AA Battery) Must allow the user to find the total voltage of batteries when installed as a single,double, or ...
October 28, 2014

Java
I would like to create a class for finding the voltages of 1, 2 or even 4 batteries. The Class can be called BatteryVoltage with a default voltage value of 1.5 (AA Battery) Must allow the user to find the total voltage of batteries when installed as a single,double, or ...
October 28, 2014

math
A sticker is 1.2 cm wide how many stickers will fit edge to edge on a strip of paper that is 108 Centimeters long
October 28, 2014

Physics
A 2.32 kg block slide down a ramp from a height of 4.19 m. The block has a speed of 3.25 m/s when it reaches the bottom. There is friction. What is the work (in J) done by gravity? What is the work done by friction? I found the work of friction already. KE= .5m(v^2) KE= .5(2....
October 27, 2014

Java
NEED HELP! I would like to create a class for finding the voltages of 1, 2 or even 4 batteries. The Class can be called BatteryVoltage with a default voltage value of 1.5 (AA Battery) Must allow the user to find the total voltage of batteries when installed as a single,double...
October 26, 2014

JAVA PROGRAMMING
NEED HELP! I would like to create a class for finding the voltages of 1, 2 or even 4 batteries. The Class can be called BatteryVoltage with a default voltage value of 1.5 (AA Battery) Must allow the user to find the total voltage of batteries when installed as a single,double...
October 25, 2014

physics
In a game of shuffleboard, a disk with an initial speed travels of 3.2m/s travels 6.0m (a) what is the acceleration of the disk? (b) what is the coefficient of friction between the floor and the disk? So far I've gotten to the equation vf^2 - vi^2 = 2a(xf-xi) because time ...
October 19, 2014

Algebra
Algrbra evaluate each expression when n = 75 12n 36n 28n 56n 87n is that mutiplication?
October 8, 2014

algb
We must be taking the same class but different levels. I do not know a Devian or Amber.
October 1, 2014

math
I do not know Devian or Amber?
October 1, 2014

Math-G7 Help please
Write a system of equations to match each of these problems. Then solve the equations using the method... Substitution, or linear combinations. _____________________________________ 1. Dan is 4 years older than his brother Gabriel. Together their ages equal 22. How old is ...
October 1, 2014

Math! URGENT
i calculate one solution through -2(x-1) = 2x-2 expand the brackets giving you 2x-2 -2(x) makes 2x then -1 x -2 = -2 add the equation together gives you 2x-2
September 25, 2014

physics
a trolley of mass 40kg us pushed up a hill of height 10m at an angle of 20 degree. calculate the force required to reach this height. how do i complete this question?
September 25, 2014

Science
1.590
September 23, 2014

vocabulary
the animals in the drought area traveled for many miles to reach a body of water where they could blank their thirst
September 22, 2014

math
Each of their six water bottles holds 8 gallons. How many gallons of water did they take?
September 21, 2014

science
Yes mam
September 18, 2014

science
Can there be 2 full moons?
September 18, 2014

programming
Could you give me an idea of how to do this? I'm lost
September 12, 2014

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