# Posts by nick

Total # Posts: 1,314

Physics
A stone is thrown directly upward from rest from ground level with initial speed 20.0 m/s; 1.50 s after that, a second stone is thrown directly upward from ground level with initial speed 18.0 m/s. (a) When are the stones at the same height? (b) What are the velocities of the ...

Statistic
Suppose you roll a die 10 times and record the proportion of sixes. Suppose you then conduct a simulation of this experiment, first 100 times, then 1000 times, and draw one histogram of the proportion of sixes found after 100 simulations and a second histogram of the ...

math
a dollar is to a dime as a meter is to a..

math
a dollar is to a dime as a meter is to a..

physics
An animal-rescue plane ﬂying due east at 40 m/s drops a bale of hay from an altitude of 73 m . The acceleration due to gravity is 9.81 m/s. If the bale of hay weighs 177 N , what is the momentum of the bale the moment it strikes the ground? part 2 At what angle of ...

physics
An animal-rescue plane ﬂying due east at 40 m/s drops a bale of hay from an altitude of 73 m . The acceleration due to gravity is 9.81 m/s^2. If the bale of hay weighs 177 N , what is the momentum of the bale the moment it strikes the ground? Please help!

math
Forces are applied to two ropes which are attached to the bumper of a stalled car. If F1 = 100 lbs at an angle of θ1 = 58 degrees, find the necessary magnitude and direction of force F2 so that the resultant force is 190 lbs in the direction shown.

math
Two squirrels are sitting on a rope as shown. The tension in segment BD is TBD = 6.3 lb at an angle of ϕ = 47 degrees. The tension in segment AB is TAB = 5.229 lb. Find the weight of the squirrel at B and the angle α.

math
A farmer's tractor has gotten stuck in a muddy pasture. To try to free the tractor, the farmer ties a rope to a tree and the front of her tractor, then pulls sideways in the middle of the rope with a force of F = 510 N. Angles of θ = 5 degrees are formed as shown. ...

MATH
The table that follows shows the relationship between the boiling temperature of water (°F) and the altitude (per thousand feet): Boiling Point of Water Altitude (1000 ft.) Temperature (°F) 8 197.6 4.5 203.9 3 206.6 2.5 207.5 Gemma and Tessa need to find the rate of ...

algebra 2
The table that follows shows the relationship between the boiling temperature of water (°F) and the altitude (per thousand feet): Boiling Point of Water Altitude (1000 ft.) Temperature (°F) 8 197.6 4.5 203.9 3 206.6 2.5 207.5 Gemma and Tessa need to find the rate of ...

algebra 1
The table that follows shows the relationship between the boiling temperature of water (°F) and the altitude (per thousand feet): Boiling Point of Water Altitude (1000 ft.) Temperature (°F) 8 197.6 4.5 203.9 3 206.6 2.5 207.5 Gemma and Tessa need to find the rate of ...

algebra 1
Ashley is the manager of a theater. She has \$240 to spend on posters to advertise a new play. If she buys small posters only, Ashley can print 48 posters for \$240. If she buys large posters only, Ashley can print 30 posters for \$240. A. Write an equation that can be used to ...

Math
what is the unit rate of 5 divided 12 1/2 and how do you solve it ?

Statistics
Wow! Thank you for the help! Also, wouldn't the 90% confidence interval be 9.6% to 12.8%? Also, would the margin of error be 3.2 or 1.6? Thank you!

Statistics
Direct mail advertisers send solicitations (that is "junk mail") to thousands of potential customers in the hope that some will buy the company's products. The response rate is usually quite low. Suppose a company wants to test the response rate for a new flyer ...

Statistics
We have calculated a 95% confidence interval for a proportion and would prefer the confidence interval to be more precise, that is narrower. Using the same sample, we can narrow the confidence interval using which of the following? A) increasing the confidence level B) ...

Statistics
In a poll of voters in a certain city, 32% said that they backed a bill which would limit growth and development in their city. The margin of error was reported as 1.7% with 90% confidence. Determine the bounds for the confidence interval. A) (88.3%, 91.7%) B) (30%, 34%) C) (...

Statistics
Which of the following is not an assumption or condition that needs to be checked for the one-proportion z-interval? A) Success/Failure Condition B) > 10% condition C) Independence D) < 10% Condition E) Randomization Is the answer C?

Statistics
A study of 902 decisions (to grant parole or not) made by the Nebraska Board of Parole produced the following 95% confidence interval: (56.1%, 62.5%) What is the margin of error? A) 1% B) 6.4% C) 59.3% D) 3.2% Is the answer C?

Chemistry
what's the density of a cube of an unknown substance if mass is 45.2g and the side of a cube is 3.2cm?

algebra
a 9 foot board is cut into two pieces .one is 3.5 feet longer than the other. how long is the longer piece?

math
😞 😞 😞 can I play with you and you can be my friend to me

Science
A rock with a mass of 0.3 kg has a kinetic energy of 43.2 j when thrown. What was the speed at which it was thrown?

Science
A boy standing on a high diving board has a mass of 45 kg and a total gravitational potential energy of 2700 j. How high is the diving board? What is the answer to this question and how did you come up with the answer.

science
What fraction of piperazine (perhydro-1,4-diazine) is in each of its three forms (H2A, HA–, A2–) at pH 8.67? The acid dissociation constant values for piperazine are Ka1 = 4.65×10–6 and Ka2 = 1.86×10–10.

Math Calculator Question
How would I plug the following formula in a TI-30X calculator: P(5)= (10 C 5)(0.20^5)[0.80^(10-5)] When I try to do it, I get 0.000104858, but that is not the correct answer.

science
You prepare a buffer solution from 10.0 mL of 0.100 M MOPS (3-morpholinopropane-1-sulfonic acid) and 10.0 mL of 0.079 M NaOH. Next, you add 1.00 mL of 7.15 × 10-6 M lidocaine to this mixture Denoting lidocaine as L, calculate the fraction of lidocaine present in the form LH

Physics
If a car is going .197 meters per second, how long will it take to go 5 kilometers (assuming the ground is perfectly flat).

Statistics
A manufacturer ship toasters in cartons of 10. In each carton, they estimate a 20% chance that one of the toasters will need to be sent back for minor repairs. What is the probability, that in one carton there will be 5 toasters that need repair? I have no idea on where to ...

Statistics
A small software company bids on two contracts. It anticipates a profit of \$60,000 if it gets the larger contract and \$25,000 if it gets the smaller contract. The company estimates that there is a 32% chance it will get the larger contract and a 62% chance it will get the ...

Statistics
The soccer team's shirts have arrived in a big box and people start grabbing them. The box contains 7 medium, 12 Large, and 11 extra-large shirts. What is the probability that the first 4 shirts are all extra large? I have been struggling with the problem for an hour and ...

English/ Writing
from what my notes say - this is going to be an attempt to create integration through the use of a new term/ concept that either combines disciples or some aspect of the disciplines.

English/ Writing

25/50 x 60/70 x 100/200= 72 6/7

Math
Write remainder as a fraction in simplest form: 567/15=

Math
Find the value of k so that the line containing the points (k,−8) and (−3,−5) is parallel to the line containing the points (9,7) and (12,5).

math
The low temperature on friday was five degrees below zero celsius. On saturday the low temperature was eight degrees below zero celsius. What integer best represents the low temperature on saturday in degrees celsius?

C++
Write a complete, working program that will do the following: Suppose you want to write a program to calculate the total cost of an item that has sales tax added. If a given item costs 14.97, and the tax rate is 6.7%, display the following information: a) The original cost of ...

Math
What is the shape of the power function that controls the end-behavior?

English
really dude. you're such a snitch

English
Need help with this assignment. Please and thanks. The first composition should be about making a decision. Since this will be a narrative piece of writing, chronological order will probably work best. The second composition will be about the American way of life. In it, ...

A crippled rook can move on a chessboard in the following way: from a square, it can move to an adjacent square sharing a common side, and every two consecutive moves must be at right angles (i.e., the rook makes a 90∘ turn at every move). A cycle is a sequence of ...

maths
a roofer charges \$25 per hour for himself and \$15 per hour for his assistant. On a recent job the assistant worked 2 hours less than the roofer and the tot charge for labour was \$290. Let r be the number of hours that the roofer worked. Which of the following equation can be ...

maths
1)a linear function is represented by f(x)=2x+7 which of the following functions would be parallel to that of the function above a)f(x)=2x-7 b)f(x)=x+7 c)f(x)=x-7 d)f(x)=-1/2x+7 e)f(x)=-1/2x-7 I choose b 2)water is pumped into an empty tank at a constant rate. after 2 minutes ...

Circles Γ1 and Γ2 have centers X and Y respectively. They intersect at points A and B, such that angle XAY is obtuse. The line AX intersects Γ2 again at P, and the line AY intersects Γ1 again at Q. Lines PQ and XY intersect at G, such that Q lies on line ...

A crippled rook can move on a chessboard in the following way: from a square, it can move to an adjacent square sharing a common side, and every two consecutive moves must be at right angles (i.e., the rook makes a 90∘turn at every move). A cycle is a sequence of squares...

A crippled rook can move on a chessboard in the following way: from a square, it can move to an adjacent square sharing a common side, and every two consecutive moves must be at right angles (i.e., the rook makes a 90∘turn at every move). A cycle is a sequence of squares...

Circles Γ1 and Γ2 have centers X and Y respectively. They intersect at points A and B, such that angle XAY is obtuse. The line AX intersects Γ2 again at P, and the line AY intersects Γ1 again at Q. Lines PQ and XY intersect at G, such that Q lies on line ...

physics
a feather is dropped on the moon from a height of 1.4 meters.the acceleration of the moon is 1.67 m/s determine the time for the feather to fall on the surface of the moon

physics
a feather is dropped on the moon from a height of 1.4 meters.the acceleration of the moon is 1.67 m/s determine the time for the feather to fall on the surface of the moon

math word problem
sam needs to clean the window on his house. he has a 25-foot ladder and places the base of the ladder 10 feet from the wall of the house. A) how high up the wall will the ladder reach? B) if his windows are 20 feet above the ground, what is the farthest distance the baes of ...

MAT LAB
9_1_1 4 &0.4 9_2_1 99.42,99.98,100.54 9_3_1 don't know...

Physics
9_1_1 4 &0.4 9_2_1 99.42,99.98,100.54 9_3_1 don't know...

Material Sciences
9_1_1 4 &0.4 9_2_1 99.42,99.98,100.54 9_3_1 don't know...

writing
1)Al:(who's,whose)car is in my parking space? 2)Ben:(it's,its)Fred's. 3)Al:(know,no,his car is red.It might be the Jones'. 4)Ben:(their,there,they're)car is green.(here,hear)come Bob and Tony. 5)Tony:Hi!Isn't my (knew,new)car(grate,great)? 6)Al:(you'...

Writing
thank you

Writing
On the whole, peoples experiences with department store cards are good except when they loose a card. Can you tell me if i used except and peoples corectly

Math
The Chicago Art Museum's Renaissance display consists of four hallways bordered around a square courtyard. A single guard is assigned to patrol the four hallways. When the guard starts working, he begins in one of the corners and walks clockwise. When he arrives at a ...

Physics
A thin aluminum ring hangs vertically from a torsion spring. A torsion spring when twisted exerts a restoring torque given by τ=−κθ where θ is the angle of twist. Suppose that the ring undergoes small torsional oscillations while it is being cooled ...

Math-algebra-Steve
The sequence {an} satisfies a0=1,a1=213, and an=2an−1+an−2 for all n≥2. Let S=∑i=1 to infinity a[i-1]/(a[i]^2-a[i-1]^2) What is the value of 1/S?

math
16

geometry
101

Physics
0.700

Math
The sequence {an} satisfies a0=1,a1=213, and an=2an−1+an−2 for all n≥2. Let S=∑i=1 to infinity a[i-1]/(a[i]^2-a[i-1]^2) What is the value of 1/S

Physics
A small coin is inside a bowl. The bowl is a surface of revolution of the curve y=100x^4 m^-3. This coin slides around the inside of the bowl at a constant height of y=0.01 m above the bottom of the bowl. What is its angular velocity in rad/s? Accel due to gravity = 9.8 m/s^2

Math
61

Calculus 2
(x^3+2x^2-15x+1)/(x^2+2x-15) from 0 to 7

chemistry
1.what are amber light from traffic signal? 2. what are cosmic rays from outer space?

history
Lord Selkirk 1804 during his tracels in British North America

history
Lord Selkirk implied that the French 1)were happy under English rule 2)never accepted English rule 3)should accept English rule 4)should change their language and institutions 5)were not oppressed by the English i put 4

history
William Lyon Mackenzie 1837 in a published handbill

history
it can be inferred that William Lyon Mackenzie 1)was a famous writer 2)was a member of the Family Compact 3)oppose the oligarchies 4)supported the British 5)believed in peaceful assembly I put 1

Precalc Math
Suppose you want to end up with \$5,000 in a bank account after 4 years earning a rate of 3.5% compounding monthly. How much would you have to initially invest? Round to the nearest dollar. Thanks a lot in advance!! :)

math
4x^2+24x+128y-988=0 in standard form

Chemistry
Oxygen gas and hydrogen gas are used to synthesize dihydrogen monoxide. A lab group utilizes 1.00 liters of oxygen and 1.01 liters of hydrogen to create 0.75 grams of product. How many milliliters of product should the group have expected to get? What will the [H+] ...

enlish literture
narnia the lion the the witch and the wabode two literary devives were used in chapter 10 repetition and smiple identify the line that features these device

spanish 1
gaston subio a los autitos chocadores pero primero teníamos almuerzo y caminó allí

physics
A helium balloon has a mass of 0.022 kg, which includes both the helium and the balloon itself. On this balloon, there is 0.290 N of buoyant force pushing the balloon upward. If I let go of the balloon, find the balloon's acceleration rate in the upward direction. If we ...

physics
Honors Physics

geometry
M is the midpoint of JK, Q is the midpoint of MK, and X is the midpoint of MQ. if a point on JK is picked at random, what is the probability that the point is on MX?

Biology
You have stated that you have love for this like of thing, high school Biology isn't that when you try it out, just have to do the following. Study, study, study and the rest you'll really enjoy

Statistics
The yearly returns of a stock are normally distributed with a mean of 5.1% and standard deviation of 2.7%. Find the probability of a yearly return being greater than 6%.

math
What is the surface area of a circle that has a diameter of 14 inches?

Biology
even in multicell organisms (ex: animals) events which occur in individual cell may have profound effects on their entire organism.

Chemisty
Before solving the problem write a balanced chemical equation Excess aqueous NaI was added to 50 mL of aqueous CuNO3 solution, and 14.2 g of CuI precipitate was formed. What was the molar concentration of CuNO3 in the original solution? Answer in units of M

physics
If your browser can't load certain text, the box after angle is theta, and the coefficient of static friction is u sub s

physics
Your written homework will be graded entirely on the clarity and completeness of your derivation. No credit will be awarded for a final answer without a derivation. As usual, simplify your final answers as much as possible. A giant Pez dispenser of mass m rests on a ladder of ...

Geometry
2x^2-9x-5=0 Is it possible to combine 2x squared with 9x? Not sure how to tackle solving this one.

art
From Wiki Answers: If you are a fan of someone famous, you may want to do what they want to do. Testimonial propaganda is a type of propaganda that is used when someone famous says something good about a certain issue, product, etc. I have not heard of icon ads.

Physics
Particles 1 and 2 have charge 20uC each and are held at separation distance d=1.50m. (a)What is the magnitude of the electrostatic force on particle 1 due to particle 2? Particle 3 of charge 20uC is positioned so as to complete an equilateral triangle. (b) What is the ...

Math
A recipe for fruit punch calls for 2 1/2 c of orange juice, 1 1/3 c of pineapple juice, and 1 3/4 c of soda water. If June makes 4 times the recipe, how many cups of fruit punch will she have?

Chemistry
7. A solution is prepared by dissolving 8.5 g NaHCO3 and 12.7 g Na2CO3 in 500.0 mL of water. Calculate the pH.

Chemistry
7. A solution is prepared by dissolving 8.5 g NaHCO3 and 12.7 g Na2CO3 in 500.0 mL of water. Calculate the pH.

Chemistry
Calculate the pH of a buffer solution containing 1.0 M ammonia (NH3 ; Kb = 1.8 x 10-5) and 1.0 M ammonium chloride (NH4Cl).

Chem
What is the maximum Cu2+ concentration possible in a solution that has a 7.4 E -5 M sulfide ion concentration without precipating CuS? For CuS, Ksp= 6.0 E -36

Statistics
A coin is tossed 10 times. What is the probability that the third head will apear on the tenth toss?

algebra
From a point on a straight road, John and Fred ride bicycles in opposite directions. John rides 10 miles per hour and Fred rides 12 miles per hour. In how many hours will they be 55 miles apart?

Science
What happens to make ice change into liquid and why does liquid water become a gas?