# Posts by bob

Total # Posts: 3,303

Chemistry
Br7C

Physics
The diagram below shows a large cube of mass 25 kg being accelerated across a frictionless level floor by a horizontal force, F. A small cube of mass 4.0 kg is in contact with the front surface of the cube. The coefficient of static friction between the cubes is 0.71. What is ...

wierd math question
11/36

counting and probability
Total number of numbers using 1-6 = 6^8 = 1679616 For any number to be divisible by 8, its last 3 digits must be divisible by 8 but these last two digits must contain only the digits from 1 to 6, with no zeros. possible cases are: 112 136 144 152 216 224 232 256 264 312 336 ...

probability
The digits 2, 3, 4, 7, and 8 are each used once in a random order to form a five-digit number. What is the probability that the resulting number is divisible by 4? Express your answer as a common fraction.

math
I look at a random time of day at a digital clock (that shows times from 1:00 through 12:59). What is the probability that (ignoring the colon) I see a palindrome such as 8:08? Express your answer as a common fraction.

Calculus
A wire 4 meters long is cut into two pieces. One piece is bent into a square for a frame for a stained glass ornament, while the other piece is bent into a circle for a TV antenna. To reduce storage space, where should the wire be cut to minimize the total area of both figures...

MATH
L=2 H=1

Math
isn't x,y above just -4,-6 ? what do i do with the distance formula?

Math
Find the point on the line 1x+7y-4=0 which is closest to the point (-4,-6)

math help pls
James is right do not listen to the others except James and sue

L.R Is wrong, non of those are irrational numbers.

Social Studies
If I could have some help on this question I'd appreciate it.I think the answer is B. Which problem would most likely result if banks did not exist? (1 point) People would no longer be able to save money. Money would not move through the economy very well. Spending money ...

English
I have to choose which word "neatly" is describing. If neatly is an adverb would it be describing packed? everything owned packed boxes I saw that everything we owned was neatly packed in cardboard boxes.

physics
tell me

Physics
NO

Social studies
Does Inca, Maya, or Aztecs have no central government?

algebra
there is a circular tank with diameter 7 min a garden. what will be the cost of fixing fountain pipe all around the tank at the rate of \$5 per meter

english
Identify the italicized word according to its class in structural linguistics. (There) are no easy answers.

Chemistry
Given the information below, calculate the heat provided by combustion of 66.1g of propane (C3H8). ΔHf° (C3H8(g)) = -103.85 kJ ΔHf° (CO2(g)) = -393.5 kJ ΔHf° (H2O(ℓ)) = -285.8 kJ Can Someone explain this in detail? i have to answer this type of...

Math for Steve
None of you are right. Eat it !

english 2
Neither pesticides nor hormones are used in the production of organic foods. Is there any mistakes here ?

Stop lieing C B A C

Kiki is wrong,😠 c.b.a.c is the correct answers

math
I need to use calculus to solve this word problem: Find all maximum and minimum values for f(x)= sin(x)+ cos(x) on [0, 2(3.14)] How do I do it?

math
Misha has 8 cats. He gives away 8 how many does he have now?

math
;-; its XD not xD

^ That was me

math
Carman wants to cut 3/4 inch peices from 62 long inch wire. How many 3/4 inch peices will she have?

Physics
2,3,4

Chemistry
hjgtgy

math problem
In the multiplication probelem at the right,A,B,C represent different non-zero digits. Each time the same letter appears it represents the same digit. Find the 2 numbers represnted by AA and BC.(0 is zero). A A x B C ------ B B O A A ----- 6 6 0

math problem
In the multiplication at the right,A,B,C represent different non-zero digits. each time the same letter appears it presents the same digit. Find the 2 numbers represnted by AA and BC.(0is zero). A A x B C ------ B B O A A ------- 6 6 0

math problem
Two large containers each contain the same amount of juice. When 54oz. of the first container are poured into the second container, the second container has 4 times as much juice as the first container. How many ounces of juice did the first container originally have?

Math problem
Mrs. Jones owns 4/7 of the stock in a small business and Mrs.Brown owns the rest. Mrs. smith agrees to give \$21,000 in exchange for 1/3 of the stock. The \$21,000is to be divided between Mrs. jones and Mrs. Brown so that all three will now have equal share of stock. How much of...

Physics help
1.)166.67N 2.)83.333N

math homework
x is defined as one more than the number of digits in the number x . For example , 1000 = 5. For what value of x wil x = x ?

math homework
Mr. Burton rides out into the country on his bicycle at 9 mph . Four hours later he starts back riding his bicycle at 6 mph. How long will it take him to get back?

math homework
The whole number are written across a piece of paper in order. There is room for 100 digits on each line and there are no spaces between each digit. What are the last 5 digits on the second line? 0123456789101112.......

science
I have made a thermometer which measures temperature by the compressing and expanding of gas in a piston. I have measured that at 100 degrees C the volume of the piston is 20 L. What is the temperature outside if the piston has a volume of 15 L? What would be appropriate ...

Math
Let d(t) be the shortest distance between Earth and the nearest other planet as a function of time t (where t is in years and t = 0 is noon on January 1, 1000 A.D., say). Is d continuous? Why or why not?

math homewok
There are nine coins on the table , 5 nickels , 3 quarters and 1 dime. Tom , Bill and Drew each pick up three coins. Bill has 25 cent more than Tom. Drew has as much money as Tom and Bill together . What three coins Drew to pick up? my answer: Drew ===)2 quarters+i nickel Is ...

x is defined as one more than the number of digits in the number x . For example , 1000 = 5. For what value of x wil x = x ?

Mr. olsen has classified the charities to which he gives money to into 3 different groups. Each charity in the 1st. group will get \$1 . Each charity in the 2 nd. group will get 9 times as much or \$9 . Each in the 3 rd. will get 9 times as much as each in the 2 nd. groups or \$...

physics
518.94 J

Math
A cattle train left Miami and traveled toward New York. 14 hours later a diesel train left traveling at 45km/h in and effort to catch up to the cattle train. After traveling for four hours the diesel train finally caught up. What was the cattle train's average speed?

Physics
89N

math
This website suks. My name is Bob, short for Robert, long for Bob.

ap chemistry
Carbon monoxide reacts with oxygen to form carbon dioxide by the following reaction: 2CO + O2 yields 2CO2 Delta H for this reaction is -135.28 kcal. If 811.7 kcal is released, how many moles of CO must have reacted? 1). 270.5 mol 2). 40.5 mol 3). 12.0 mol 4). 5.41 mol 5). 16.3...

math
i dont know

Science
dumbass

Algebra
"If 3 people can do a job in 5 days, how many days will be needed if 4 people do the same job?"

physics
In a Broadway performance, an 80 kg actor swings from a 3.75 m long cable that is horizontal when he starts.? At the bottom of his arc, he picks up his 55.0 kg costar in an inelastic collision. What maximum height do they reach after their upward swing?

math
i am a 3-digit number divisible by 3. my tens digit is 3 times as great as my hundreds digit, and the sum of my digits is 15. if you reverse my digits, i am divisible by 6 as well as 3

SOC 101
soc 101 In most developed nations health care is?

physical
this one up top is the wrong way of doing this problem

biology
what is the relationship between interactions and interdependence

physics 100
Bob, who has a mass of 60 , can throw a 800 rock with a speed of 26 . The distance through which his hand moves as he accelerates the rock forward from rest until he releases it is 1.0 . a) What constant force must Bob exert on the rock to throw it with this speed? b)If Bob is...

science
if 25 ml of sugar is mixed with 299 ml of water and then 50 ml of water is poured out, how much sugar remains in the 150 ml of wtare?

statistics
The HR department of an organization collects data on employees' age, salary, level of education, gender, and ethnicity. Which data is more likely to follow normal distribution? Why?

Science
How many grams of ammonium nitrate is equivalent to 1 gram of calcium nitrate

7th grade masth asap hurry plz ms.sue somebody plz
My gosh really Anonymous WOW what a freaking snitch she wasn't asking for the answer she was asking how to do it and you know what I'm guessing you Google searched the answer because why else would you be here and heck even if she was cheating i bet you she's ...

physics
12.54

physics
If a car is traveling at a constant speed of 15 meters per second, goes off a cliff, and needs to land 100 meters from the cliff, how high is the cliff?

math
Suppose that you have \$12,500 to invest over a 4 year period. There are two accounts to choose from: 4.5% compounded monthly or 4.3% compounded continuously. a. Write the formula for the first account’s compound interest for n compounding per year. b. Write the formula ...

math
The Concord Community Park Association receives a \$10,000 donation from an anonymous donor who stipulates that before using the funds to improve the park, they must invest the money until it has doubled in value. The Park Association decides to invest the money in an account ...

math
China .8% Ethiopia 2.8%

chemistry
Nitric acid reacts with silver metal: 4HNO3 + 3Ag -> NO + 2H2O + 3AgNO3. Calculate the number of grams of NO formed when 10.8 g of Ag reacts with 12.6 g HNO3

history
What are three good points to talk about in a research paper about child labor in the 1800s? 10th grade level please.

you go to connctions academy cheater!

pyshic
A car has a mass of 1.35 × 103 kg. If the force acting on the car is 6.82 × 103 N to the east, what is the car’s acceleration? Answer in units of m/s2

yolo
gajkwh;reg

physics
a toy car runs off the edge of a table that is 1.225 m high. if the car lands .400 m from the base of the table (A) how long does it take for the car to fall and (B) what is the horizontal velocity of the car?

7th grade math questions Scientific Notation
GIVE ME A D E R P DERP!

7th grade math - Scientific Notation basics
HEY YOU GO TO CONNECTIONS ACADEMY! this is cheating

Math
6.00-4.00=2.00

Finance
65656

math
I am a number between 50 and 60.One of my factors is 28.What number am I?

us history
what do the following have in common? indentured servants indigenous slaves

us history
Which of the following is not like the other? Cortes, Pizarro, Champlain, and Ponce de Leon

physics
The pilot of an aircraft wishes to fly due west in a 42.7 km/h wind blowing toward the south. The speed of the aircraft in the absence of a wind is 204 km/h.

chemistry
what is the name of the compound C2H4?

chemistry
what is name of the compound P2S5? is it phosphorous pentasulfide?

chemistry
chemical formula for potassium hydrogen sulfide? is it KHS?

Physics
A duck has a mass of 2.8 kg. As the duck paddles, a force of 0.09 N acts on it in a direction due east. In addition, the current of the water exerts a force of 0.20 N in a direction of 47° south of east. When these forces begin to act, the velocity of the duck is 0.12 m/s ...

Physics
A duck has a mass of 2.8 kg. As the duck paddles, a force of 0.09 N acts on it in a direction due east. In addition, the current of the water exerts a force of 0.20 N in a direction of 47° south of east. When these forces begin to act, the velocity of the duck is 0.12 m/s ...

History
What is moral law? What is civil law? Contrast the both. can someone name me anything relating to those from current events or historical events?

LA
Why are you saying thank you?

LA
what links the subject of the sentence with a description of the subject?

Chemistry
A 0.41 g sample of limestone was dissolved in HCl and all the calcium in the limestone was converted to Ca2+(aq). The solution was treated with excess ammonium oxalate, (NH4)2C2O4(aq), and it was found that 3.0 g of calcium oxalate, CaC2O4(s) was precipitated. Calculate the ...

history
B is correct

Social studies
Why did mound builders build burial mounds

Math