Tuesday
December 6, 2016

Posts by Morgan

Total # Posts: 798

Social studies
What helped caravels sail against the wind?
November 11, 2016

Physics
A student holds a bike wheel and starts it spinning with an initial angular speed of 7.0 rotations per second. The wheel is subject to some friction, so it gradually slows down. In the 10-s period following the inital spin, the bike wheel undergoes 60.0 complete rotations. ...
October 31, 2016

Physics
A uniform disk of radius 0.485 m and unknown mass is constrained to rotate about a perpendicular axis through its center. A ring with same mass as the disk\'s is attached around the disk\'s rim. A tangential force of 0.247 N applied at the rim causes an angular ...
October 31, 2016

Physics
A flywheel in the form of a uniformly thick disk of radius 1.48 m, has a mass of 43.6 kg and spins counterclockwise at 303 rpm. Calculate the constant torque required to stop it in 2.50 min.
October 31, 2016

Physics
A soccer play kicks the ball toward a goal that is 29m in front of him. The ball leaves his foot at a speed of 19m/s and at an angle of 32degrees above the ground. Find the speed of the ball when the goalie catches it in front of the net. my work: vxi=16.1 vxf=16.1 ax=0
October 30, 2016

Chem
Calculate the value of work, w, for the following system if 26.7 g of NaN3 reacts completely at 1.00 atm and 22 °C.
October 28, 2016

Math
If my input is 0 and output is blank then my input is 1 and output 2 then input 3 output 22 input 4 output 32 how do i find the first output that is blank?
October 26, 2016

Physics
Three different masses are attached to a spring which hangs down vertically from the ceiling. A metric ruler hangs from the ceiling next to the spring and measures how far from the ceiling the sping hangs. When a 110 N weight is attached to the spring, the spring reaches the ...
October 25, 2016

Physics
The objects listed below are placed at the top of a ramp, and roll down to the bottom without slipping. Assuming that there is no air resistance, rank them in order from fastest average rolling speed to slowest. Basketball Bowling Ball Penny Wedding Ring
October 24, 2016

Physics
A sphere of radius 2.84 cm and a cylinder of radius 8.97 cm are rolling without slipping along the same floor. The two objects have the same mass. If they are to have the same total kinetic energy, what should the ratio of the sphere\'s angular speed to the cylinder\'s...
October 24, 2016

Physics
A propeller is modeled as five identical uniform rods extending radially from its axis. The length and mass of each rod are 0.721 m and 2.55 kg, respectively. When the propellor rotates at 561 rpm (revolutions per minute), what is its rotational kinetic energy?
October 24, 2016

Physics
A baseball pitcher throws the ball in a motion where there is rotation of the forearm about the elbow joint as well as other movements. If the linear velocity of the ball relative to the elbow joint is 19.7 m / s at a distance of 0.470 m from the joint and the moment of ...
October 24, 2016

Physics
A bicyclist is coasting straight down a hill at a constant speed. The mass of the rider and bicycle is 80 kg and the hill is inclines at 15 degrees with respect to the horizontal. Air resistance opposes the motion of the cyclist. Later, the bicyclist climbs the same hill at ...
October 9, 2016

Physics
An 8 kg bowling ball creates air resistance according to F(air)=2.14v. The bowling ball is rolled off the top of the sears tower. a) Calculate the acceleration (magnitude and direction at 1) The top of the building____ 2)when the ball reaches 5.6 m/s_____ b) What is the ...
October 9, 2016

Physics
Using a simply pulley/rope system, a crewman on an Arctic expedition is trying to lower a 6.17-kg crate to the bottom of a steep ravine of height 23.8 meters. The 55.6-kg crewman is walking along holding the rope, being careful to lower the crate at a constant speed of 1.50 m/...
October 6, 2016

Physics
As a hiker in Glacier National Park, you are looking for a way to keep the bears from getting at your supply of food. You find a campground that is near an outcropping of ice from one of the glaciers. Part of the ice outcropping forms a 31.5° slope up to a vertical cliff. ...
October 6, 2016

Physics
As a hiker in Glacier National Park, you are looking for a way to keep the bears from getting at your supply of food. You find a campground that is near an outcropping of ice from one of the glaciers. Part of the ice outcropping forms a 31.5° slope up to a vertical cliff. ...
October 5, 2016

Physics
Using a simply pulley/rope system, a crewman on an Arctic expedition is trying to lower a 6.17-kg crate to the bottom of a steep ravine of height 23.8 meters. The 55.6-kg crewman is walking along holding the rope, being careful to lower the crate at a constant speed of 1.50 m/...
October 5, 2016

Us history
D) Avoiding it by smuggling molasses
October 3, 2016

Chemistry
Write the formulas of the compounds formed by NH4+ with the following anions: NO3−, HCO3−, SO42−, HPO42−. Express your answers as chemical formulas separated by commas. Use the given order of anions.
October 3, 2016

Physics
Pool players often pride themselves on their ability to impart a large speed to a pool ball. In the sport of billiards, event organizers often remove one of the rails on a pool table to allow players to measure the speed of their break shots (the opening shot of a game in ...
October 1, 2016

Physics
A soldier is tasked with measuring the muzzle velocity of a new rifle. Knowing the principles of projectile motion, he decides to perform a simple experiment at the indoor firing range. The soldier hangs a target a distance of d = 104 m from the end of the barrel. The rifle is...
October 1, 2016

Physics
ool players often pride themselves on their ability to impart a large speed to a pool ball. In the sport of billiards, event organizers often remove one of the rails on a pool table to allow players to measure the speed of their break shots (the opening shot of a game in which...
September 30, 2016

Physics .. hard problem
An overly eager physics student wants to confirm that the acceleration of gravity is ag=9.8 m/s^2. To check this, the student steps off the roof of the Sears Tower (height at the sky deck 427m). The rocketeer (who arrived five seconds after the student stepped off) uses a ...
September 27, 2016

Physics
A 2.83-kg object is thrown vertically upward from the surface of Mars, where the acceleration due to gravity is g1 = 3.71 m/s2. The initial velocity is v1, and the object reaches a maximum height of y1. What is the maximum height, y2, if the object is thrown with a speed of v2...
September 26, 2016

Physics
On the Moon, the acceleration due to gravity is 1.62 m/s2. How far would a 13 g rock fall from rest in 5.5 seconds if the only force acting on it was the gravitational force due to the Moon?
September 26, 2016

Physics
While standing at the edge of the roof of a building, you throw a stone upward with an initial speed of 6.11 m/s. The stone subsequently falls to the ground, which is 12.7 m below the point where the stone leaves your hand. At what speed does the stone impact the ground? How ...
September 26, 2016

Social study
2 down another name for mississippians
August 25, 2016

Chemistry
For the following reaction, how many kJ of heat are produceed in forming 225.0 g of NO? 4 NH3 + 5 O2 → 4 NO + 6 H2O ΔHrxn = -906 kJ/mole
July 6, 2016

Government
Thank you for your help
July 4, 2016

Government
1. Not all resolutions need presidential approval, as do bills becoming laws. True False I think the answer is true because there are certain resolutions like joint and concurrent resolutions and joint require presidential approval while concurrent does not. Is my answer ...
July 4, 2016

Science : Physics
Will an object accelerate if the forces are balanced? Why or why not? I know that the answer is that it will not accelerate but I'm having a difficult time explaining why.
June 17, 2016

Science : Physics
A 15kg object takes 26.3 meters to stop because of friction. Assume no skidding. If the frictional force is 60 N, what is the initial velocity of the object?
June 17, 2016

Science
A force of 32.3 N is applied to a 5.87 N box resting on a table. If friction acts with a force of 2.11 N, what is the acceleration of the box?
June 2, 2016

Chemistry
What mass of solid magnesium hydroxide is needed to neutralize .385 L of 2.5 M nitric acid?
May 22, 2016

Chemistry
What is the concentration of 127 mL of solution made with .450 g of nickel (II) nitrate hexahydrate?
May 22, 2016

English
Thank you so much! I had trouble with this in class, but I understand it better now
May 20, 2016

English
is 1 a and 3 B?
May 20, 2016

English
Select the correct verb tense used in the sentences below That company has been making surfboards since the 1960's present perfect progressive present progressive*** past perfect progressive past progressive We had been listening to the radio when the lights went out past ...
May 20, 2016

English
thanks!!
May 20, 2016

English
Are 2 and 5 D?
May 20, 2016

English
Choose the correct tense of the underlined verb Everyone in the climbing expedition /developed/ frostbite from their exposure to the cold past perfect future present past*** This recipe /will produce/ two dozen chocolate chip cookies past future perfect*** present future That ...
May 20, 2016

English
thanks!
May 20, 2016

English
Is number 3 A?
May 20, 2016

English
Choose the past form or the past participle for the underlined verb We /sell/ dozens of magazine subscriptions last week sold*** selled have selled no error Until this morning, they /kept/ the secrete to themselves keep keeped keeping no error*** The United states has /lead/ ...
May 20, 2016

math
Two particles A and B of mass 5kg and 9kg respectively rests on the smooth faces of a fixed wedge .They are connected by a light inextensible string passing over a smooth pulley at C and are released from rest.In the subsequent motion B hits the ground and does not rebound. a...
April 23, 2016

Algebra
there should be a 1 red diamond card in the deck. so the probability will be 1 out of 52 cards
April 22, 2016

math
haley drew a scale drawing of a city. A neighborhood Park, which is 70 yards wide in the real life, is 175 inches wide in the drawing. What is the scale of the drawing
April 21, 2016

math
use pemdas
April 21, 2016

Math
is 2/3 larger than 4/7
April 7, 2016

Math
Consumer Reports indicated that the average life of a refrigerator is 13 years with a standard deviation of 2.5 years. (Assume the distribution of the age of the refrigerators is approximately normal.)
March 28, 2016

Math
Suppose that a company guarantees refrigerators and will replace with a new one that breaks while it is under the guarantee. However, the company does not want to replace more than 5% of the refrigerators under the guarantee. For how long should the guarantee be made? You can ...
March 28, 2016

Math
Suppose that a company guarantees refrigerators and will replace with a new one that breaks while it is under the guarantee. However, the company does not want to replace more than 5% of the refrigerators under the guarantee. For how long should the guarantee be made? You can ...
March 28, 2016

physics
Freshwater (𝜌 = 1,020 kg/m3) is flowing in a horizontal pipe whose cross section widens from 9.0 cm2 to 13.0 cm2. The water speed at the wide section of the pipe is 1.25 m/s. What pressure difference (absolute value) is there between narrow and wide section?
March 26, 2016

Trigonometry
5. Prove: Tan beta sin beta + cos beta = sec beta 6. Prove: ( tan y cos^2 y + sin^2 y)/ (sin y) = cos y+sin y 7. Prove (1+tan theta)/(1-tan theta) = (sec^2+2tan theta) /(1-tan^2 theta)
March 10, 2016

Trigonometry
5. Prove: Tan beta sin beta + cos beta = sec beta 6. Prove: ( tan y cos^2 y + sin^2 y)/ (sin y) = cos y+sin y 7. Prove (1+tan theta)/(1-tan theta) = (sec^2+2tan theta) /(1-tan^2 theta)
March 9, 2016

Math
25,344ft. is your answer :)
February 2, 2016

Can someone help me on math?
You just asked this same question and I already answered it. $2,000.00 at 6% for 7 years *** b. $4,500.00 at 3% for 6 years *** c. $1,400.00 at 6% for 9 years d. $5,000,00 at 7% for 3 years *** e. $800.00 at 15% for 5 years Calculate the tax for each pair of shoes with the ...
February 1, 2016

More math
a,b, and d Simple interest is just p x r x t
February 1, 2016

philosophy
Russell is arguing that philosophy is valuable. You'll want to think about his argument using his own key ideas: •How does he think philosophy is different from science? •Does he think philosophy is different from science in a good or bad sense, like one is ...
January 17, 2016

SCIENCEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
hey guys be a little nicer please she was just asking for help
January 13, 2016

Math ASAP
Order the numbers from least to greatest. 0.21, 1/5, 0.18, 24% a. 0.21, 1/5, 0.18, 24% b. 24%, 0.21, 1/5, 0.18 c. 0.18, 1/5, 0.21, 24% d. 1/5, 0.18, 0.21, 24% ** Am I right? I don't know. Please help! Thanks so much!
January 11, 2016

Chemistry
A buffer solution contains 0.052 M HC2H3O2 and 0.025 M NaC2H3O2. The pH of this solution is _____. Ka for HC2H3O2 is 1.8x10-5.
December 1, 2015

Algebra
One number is 58 more than twice another. Their product is 58 more than twice their sum. Find the numbers.
November 23, 2015

World History
what is the social position of a merchant in both Christian and Islamic worlds.
November 19, 2015

Statistics
CI=point estimate +- (z)(standard deviation) CI= 0.3 +- (1.96)(0.04) CI= 0.3 +- 0.0784 CI= 0.3 - 0.0784 CI= 0.3 + 0.0784 CI= (0.2216, 0.3784)
November 10, 2015

Statistics
We observe a sample proprotion p-hat = 0.3. If the standard deviation of the sampling distribution of p-hat is 0.04, what is the 95% confidence interval for p?
November 10, 2015

chemistry
Assume that 268mL of 5.00M NaOH are diluted to a final volume of 574mL with water. What is the final molarity of NaOH (FM=40.0).
November 8, 2015

math
A runner and a walker depart from the same point going in opposite directions on a circular track that is 1 mile long. The runner travels at 9 mph and the walker at 3 mph. After how many minutes will they pass each other? I know the answer is 5 but I don't know how to get it
November 5, 2015

math
A runner and a walker depart from the same point going in opposite directions on a circular track that is 1 mile long. The runner travels at 9 mph and the walker at 3 mph. After how many minutes will they pass each other? I know the answer is 5 but I don't know how to get it
November 5, 2015

Jackie Carden
Mr Snyder is tiling a floor. The floor is 16 tiles long and 9 tiles wide. The center section is 12x long and 5 tiles wide. How many tiles are in the border section?
October 19, 2015

World History
Can someone please help me answer this question Historians traditionally date the end of the Roman Empire to 476 AD. Why is this? Is this a good date to use for the end of Rome? Why or why not? Does this date adequately capture the end of the so­called “Greco­...
October 11, 2015

World History
Can someone please help me found out the answer to this question. Discuss the relationship between inequality and war from the time of the earliest cities (roughly 4000 BC) to the end of the Bronze Age (roughly 1200 BC). You may consider any form of inequality in any group of ...
October 11, 2015

Chemistry
The strontium-87 isotopes stores in the body and decays by the process shown below. The half-life is 2.80hr. Suppose that 0.766 millicuries got into the body. How many mc will remain after 8.40 hr?
September 27, 2015

Chemistry
The strontium-90 isotope decays by the reaction below. It has a half-life of 28 yr. If the initial activity of this isotope was 168dpm, what would the activity be after 28.0 yr?
September 27, 2015

math
In jims,5 times as many students take the bus as those who walk. A total of 24 students walk or take the bus. How many more students take the bus than walk to school?
September 22, 2015

Science
How do I write the correct dissolution reaction for BaCl2
September 16, 2015

Chemistry
Which of the following shows the correct dissolution reaction for BaCl2?
September 16, 2015

science
Based on the oxidation numbers which compound is the oxidizing agent in the following reaction? 8Al + 3KClO4 ¨ 4Al2O3 + 3KCl
September 7, 2015

Chemistry
determine the molarity of a solution of silver nitrate prepared by dissolving 5g of silver nitrate in 25.0mL of water
September 1, 2015

Math
Customers of a phone company can choose between two service plans for long distance calls. The first plan has a $14 monthly fee and charges an additional $0.20 for each minute of calls. The second plan has an $18 monthly fee and charges an additional $0.15 for each minute of ...
July 25, 2015

Psychology
you tell me, cause i honestly don't know
July 6, 2015

pre calculus
32% of a particular radioactive substance disappears in 227 years. Part 1: Find the decay constant. Your answer must be correct to five decimal places. Part 2: Determine the time T in years required for 93% of the substance to disapper. Your answer must be correct to two ...
July 6, 2015

Science Help Plzz
These are the rights seers for the connexus people D B A A C C B D A A D B C D
June 2, 2015

geometry
Does pi cancel when I add 48ƒÎã2 + 36ƒÎ ?
May 11, 2015

Pre-Ap Chemistry
This is my last question and this one really threw me for a loop. I know that the temp has to be converted to kelvin which would make it 315.4 What volume of oxygen gas can be collected at 0.683 atm pressure and 34.0◦C when 42.4g of KClO3 decompose by heating, according ...
May 8, 2015

Pre-Ap Chemistry
This is due online in 20 minutes and I've been working on it for 3 hours. Im lost on what to do with this question. Please help How much H2 gas at STP can be produced by the reaction 2Na(s) + 2H2O(§¤) -> H2(g) + 2NaOH(aq) of 3.80 g of Na and excess water? ...
May 8, 2015

CHEMISTRY
264.6666666667 :) thanks!
May 8, 2015

CHEMISTRY
Nitric acid can be produced by the reaction of gaseous nitrogen dioxide with water. 3NO2(g) + H2O(§¤) −> 2HNO3(§¤) + NO(g) If 794 L of NO2 gas react with water, what volume of NO gas will be produced? Assume the gases are measured under the ...
May 8, 2015

THIS IS DUE BY 10PM
it said that it was wrong
May 8, 2015

THIS IS DUE BY 10PM
so then would it be (22.4)(.0821)(316.0) divided by 1.09? which is ultimately 534.671
May 8, 2015

THIS IS DUE BY 10PM
YES(:
May 8, 2015

THIS IS DUE BY 10PM
What is the volume of 0.100 g of C2H2F4 vapor at 1.09 atm and 43.9◦C? Answer in units of L
May 8, 2015

science
are you from connexus and if you are what grade
May 4, 2015

Chemistry
Calculate the pH of the resulting solution if 50 cm3 of 0.045mol dm-3 solution of C5H5N is mixed with 100 cm3 of 0.035 mol dm-3 of C5H5NH+
April 29, 2015

Chemistry
Calculate the pH of the resulting solution if 50 cm3 of 0.045mol dm-3 solution of C5H5N is mixed with 100 cm3 of 0.035 mol dm-3 of C5H5NH+
April 29, 2015

Math
We write at the same time again. LOL
April 16, 2015

Math
Thank you
April 16, 2015

Math
I know I said it was C now.
April 16, 2015

Math
The answer is C.
April 16, 2015

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