# Posts by Bob

Total # Posts: 3,303

**Physics**

gitgud

**math**

What's an average size dog?

**chemistry**

How many atoms of oxygen are there in 5.00g of copper(II) sulfate pentahydrate?

**Engineering**

Have a new tutor who has failed to teach us most of his assignment, I've finally got stuck on derivation of the formula G=E/2(1+v). any help would be much appreciated!

**Geometry**

Two standard number cubes are thrown simultaneously. What is the probability that the combined result of the two cubes is exactly 7, or that it is less than (but not equal to) 6? Round answer to the nearest thousandth.

**Chemistry**

If ununseptium (element 117) reacts with oxygen what would be equation of the product? Thanks so much!

**Math**

5/6=1/3-x

**engineering**

I've answered it myself i think. The liquid is being compressed therefore the change in volume should be negative. if someone could verify that'd be great

**engineering**

should my calculated bulk modulus of a liquid be (-)? the lookup tables i'm comparing the results too have positive values, or is it written without the (-) as a negative bulk modulus is impossible?

**English**

substitute the given words in and see if it makes sense the answer is when

**Math**

21

**math**

Try setting up a proportion.

**math**

Why would you add 2+5?

**math**

Where did you get the 7 from? Check again. I'll be glad to check your work.

**algebra**

The slope of a horizontal line is 1. The equation of the horizontal line passing through (4, 5)is _______?

**algebra**

Find an equation of the line that satisfies the given conditions. Through (5, 3) and (4, 7)

**calc**

A water trough is 7 m long and has a cross-section in the shape of an isosceles trapezoid that is 40 cm wide at the bottom, 100 cm wide at the top, and has height 60 cm. If the trough is being filled with water at the rate of 0.3 m3/min how fast is the water level rising when ...

**MATH**

So, only 24 books can fit on one shelf, and 4 on another?

**stats**

The probability that a football game will go into overtime is 18%. In 140 randomly selected football games, what is the mean and the standard deviation of the number that went into overtime?

**Science**

xciojiovjeio

**Math**

Suppose that water is pouring into a swimming pool in the shape of a right circular cylinder at a constant rate of 3 cubic feet per minute. If the pool has radius 6 feet and height 10 feet, what is the rate of change of the height of the water in the pool when the depth of the...

**Physics**

A car drives straight down toward the bottom of a valley and up the other side on a road whose bottom has a radius of curvature of 100m . At the very bottom, the normal force on the driver is twice his weight. At what speed was the car traveling?

**Math**

A sphere has a volume of 200m3 . What is the volume of the smallest cube that this sphere would fit inside of? (Hint: try drawing a diagram of a side or top view of this situation)

**pre cal**

i;fo:OI jfiiejf ;soiej ;si edjis s;i ijd;si s;id dji s;ijaiwej faiw f ;wijf ;aeij fiaejd ;aie ; eiwfj ;awie eij;ije aweinrr r fkr rr;IEJR JREI rjir; rj W JIRJ R;RJ RF ZIRJ F; ZERJIFSE; TS GDR H SR TH RYHSRTHB DFV dfvszdf dv svsf vefv zf Figure out my code...-_- ...

**pre cal**

How fast is the tire traveling in mph if it does 2 rotations in 2 seconds with a diameter of 27 inches for the tire?

**statistics**

.4332

**statistics**

A congressional committie has of 8 senators and 7 representatives. How many ways can a subcomittie of 6 be formed from the full committee if exactly 5 of the members must be senators?

**English**

he drank a lot until he got uh... sleepy?

**math**

43.478260869565217391304347826087% of the students are in 9th Grade

**Math**

A cylinder has a surface area of 250cm2 . The height is twice as big as the radius. What is the height of the cylinder?

**algebra**

5 (x + 10) + x ?? 6x + 15 5x + 15 6x + 50 4x - 50

**chemistry**

A solution contains an unknown amount of dissolved magnesium. Addition of 5.34×10−2mol of Na2CO3 causes complete precipitation of all of the magnesium. What mass of magnesium was dissolved in the solution.

**biology**

there just fill in a blank questions

**biology**

_______ is the tendency for the fluids to resist flow.______________ water is more vicious than warmer water, allowing floating organisms to use less energy to keep from sinking.

**CHEM**

83% as4s4

**history**

They all how a part in reform. I would have to change to Plessy v. Ferguson because of it was just between the races and not everyone

**history**

Muckrackers

**history**

There were many examples that inspired the reform-minded spirit after 1900. Which was not an example? Muckrakers Plessy v. Ferguson Triangle Shirtwaist Factory fire The Jungle

**Trigonometry**

The wheels of a scooter have a diameter of 4.5 inches. If the person riding the scooter is traveling down hill at 15.0 mph. what is the approximate angular speed of the wheels in radians per second

**Math**

81.5

**chemistry**

A mothball, composed of naphthalene (C10H8), has a mass of 1.10g

**chemistry**

A helium balloon contains 0.30g of helium. Given the molecular weight of helium is 4.0 g/mol, how many moles of helium does it contain?

**Physics**

A projectile of mass 0.377 kg is shot from a cannon, at height 6.6 m, as shown in the figure, with an initial velocity vi having a horizontal component of 6.1 m/s. The projectile rises to a maximum height of y above the end of the cannon’s barrel and strikes the ...

**Science**

I think nothing

**Physics**

An ice skater skates 13.3 m southwest, then 26.6 m east, and finally 39.9 m in a direction 51.5◦ north of east. Find the magnitude of the displacement required to bring the skater back to her starting point. Answer in units of m

**math**

pee pee poo

**physics**

A child rides a toboggan down a hill that descends at an angle of 20.7◦ to the horizontal. The hill is 18.2 m long. What is the horizontal component of the child’s displacement?

**PHYYYYYSICS 3**

¯\_(ツ)_/¯ i don't knew m8

**fraction**

where is that 11 ft came from? because 4yards ids equal to 12 feet.Right?

**physics**

54m

**math**

thank you so much i get it now !! :)

**math**

simplify and state any restrictions: 1. x+3/x^2+11x+24 - 2x+10/x^2+11x+30 answer: -x-10/(x+8)(x+6) 2. x-4/x^2-8x+16 + 3x+21/x^2+12x+35 answer: 4x-7/(x-4)(x+5) i don't uderstand how to do it. can you please show me the steps. thanks

**math**

-10+8=8+(-10) name the property illustrated

**algebra**

mr darwin who is found of gardening is pushing a wheelbarrow with a force of 5.0 newtons. there are 11.4 newtons worth of horse manure in the wheelbarrow. the length from the wheel to the end of the handles is 1.6m and the length of the wheel to the center of the bucket is 0....

**Math**

mr darwin who is found of gardening is pushing a wheelbarrow with a force of 5.0 newtons. there are 11.4 newtons worth of horse manure in the wheelbarrow. the length from the wheel to the end of the handles is 1.6m and the length of the wheel to the center of the bucket is 0....

**Geology**

slower than

**government**

Judges espousing a philosophy of original understanding maintain that school desegregation cases decided on the basis of the Fourteenth Amendment were wrongly decided because? 1 he original intent of the framers was to defer to the will of legislative bodies. 2 we do not know ...

**government**

laws that discriminate must be said to reflect the will of the majority.

**government**

Originalists often hold that it is incorrect to use the Equal Protection Clause of the Fourteenth Amendment to strike down laws that discriminate because

**Math**

A recipe that makes 4 servings calls for 3 / 4 cup of apple juice and 2 / 3 cup of cranberry juice. How many cups of juice are there per serving?

**Physics**

27.49 m/s^2

**Math**

Perfect, well done!

**math**

26.9978

**statstics**

a report says 65% of vechiles sold were SUV's. A random sample of 100 vechiles sold in last month is taken. Use the central limit theorem, find the probability that most 70% of the vechiles in the sample were SUV's

**algebra**

what is the equation of a parabola whose vertex is (6,0) and whose graph is half as tall as y=x^2 and opens upside down

**Buns**

My mom

**DAU-Developing the Program Budget Module Exam**

$ 20M for FY04 and $ 48M for FY05

**log 101**

a

**statistics**

You want to estimate the difference in grade point averages between two groups of university students to be accurate within 0.2 grade point, with probability approximately equal to 0.95. If the standard deviation of the grade point measurements is approximately equal to 0.6, ...

**Statustics**

98.75 was the answer my hw accepted

**College English**

disunity or lack of confederation amongst various tribes caused considerable weakness in their profile as "THE" indian nation as WHOLE... thus they were dismembered and placed on reservations.. by 1825 the last major tribes were sent across the MISSISSIPPI RIVER.. ...

**statistics**

the daily milk production for a certain type of dairy cow has a mean of 43 pounds per day with a standard diviation of 5 pounds per day. Suppose this daily mild production has a normal distribution. Calculate the probability that a randomly selected cow of this type has a ...

**math**

10

**Permutation and Combination**

dojfc

**Calculus**

Thank you so just to clarify for a) all you did was take the integral of the acceleration to get your v(t) function. Then for b) do you set v=2+3t equal to 14? c)You just take the integral of v(t) to get position function I think.

**Calculus**

A particle moves with a fixed acceleration of 3 m/s^2. If its initial velocity is v(0)= 2 m/s, and its initial displacement is s(0)= 0 A)Find its velocity function v(t) B)How long does it take for the particle to reach the velocity 14 m/s? C)Find the distance traveled when its...

**math**

convert y=2x^2+5x-5 into vertex form

**CHEMISTRY**

12g

**AP Macroeconomics**

nobody likes you :(

**physics**

The force applied to the bar is 34*9,8 = 333.2 N. The extension of the wire ∆L = 0.0145 m, so the bar stiffness is F/∆L = 2.30*10^4 N/m The number of atoms in one layer of cross section is area of the bar divided by the area of one atom =0.0012²/(2.84*10^-10)&...

**Calculus**

Given f(x) = csc^4(5x^2-3x+1), find f'(x). Show all work.

**English**

I need to find a sensationalised news article homework a and then highlight sensational parts please help'!!!

**math**

Perform a one-way ANOVA analysis, testing at the 0.05 level. Also, calculate the mean number of sick days for each group. Describe your results. . Group Sick days per year Placebo: 7, 4, 6, 8, 6, 6, 2, 9 Flu Shot 1: 5, 3, 3, 5, 4, 7, 3, 3 Flu Shot 2: 2, 4, 1, 2, 2, 1, 2, 5

**Statistics**

I began to think of the binomial distribution with the common heads or tails coin flipping experiment example...I believe my question in #3 is related to that, and in fact I think the generalization is what applies, the "multinomial" distribution...any thoughts from ...

**Statistics**

You have these 10 observations of some event X: 1.03 1.022 1.022 1.01 1.026 1.02 0.95 1.005 1.05 1.023 Here is the sorted list from least to greatest: 0.95 1.005 1.01 1.02 1.022 1.022 1.023 1.026 1.03 1.05 Based on this data alone: 1) It makes sense to say P(X <= 0.95) = 1/...

**Pre algebra**

Sophie has 5 pieces of string that are 4 yards each. She uses 3 pieces that are each 3 feet long. How much string does Sophie have left?

**Physics**

. A rock is thrown up into the air with an initial velocity of 15m/s up. What is the rock's velocity after 0.40 seconds?

**Science**

I got a 93% because i listened to Queen Roaster it is A and D. please don't lie. now i don't have 100%

**Chemistry**

a) Which of the following reagents would oxidize Zn to Zn2 , but not Ag to Ag ? Answers are: Co2+ Ca2+ Br2- Br2 Co or Ca b) Which of the following reagents would oxidize Ag to Ag , but not Cl– to Cl2? Answers are: Co Br- Br2 Co2+ Ca2+ or Ca

**U.S History (PLEASE help!!!)**

b

**Geometry**

Need help solving this problem so confused The tries of an automobile have a diameter of 22 inches. If the wheels revolve ten times, how far does the automobile move? Round your answer to the nearest tenth of a foot and show your work

**geography**

B. 200,000

**Bus 308**

true

**Science--Myanswer Plz, plz**

The first one is vary Wrong

**Chemistry**

The mechanism for the reaction described by No2+CO--->CO2+NO is suggested to be (1)2NO2--->NO3+NO (2)NO3+CO--->NO2+CO2 Assuming that [NO3] is governed by steady-state conditions, derive the rate law for the production of CO2(g) and enter it in the space below. rate of...

**Algebra**

Participants in a study of a new medication received either medication A or a placebo. Find P(placebo and improvement). You may find it helpful to make a tree diagram of the problem on a separate piece of paper. Of all those who participated in the study, 80% received ...

**math 6 probability**

I LOVE PORN

**algebra**

i'm thinking of two numbers, x and y. The sum of 4x and 1 is y. The sum of y and twice x is 13. Find x and y.