# Posts by Joe

Total # Posts: 2,605

**math**

A vampire could have the ability to infect an entire planet if he bit 2 people each day. Those 2 people would bite 2 people the next day, and then all of those vampires would each bite 2 people the next day, and so forth... How would I solve this to find out how many people ...

**Differential Equations**

A tank originally contains 5 lb of salt dissolved in 200 gal of water: Starting at time t=0, a salt solution containing 0.10 lb/gal is to be pumped into the tank at a constant rate and the well-stirred mixture is to flow out of the tank at the same rate. a)The pumping is to be...

**Physical Science**

waves moving on a lake have a speed of 2.0 m/s and a distant of 1.5m between adjacent crest. what is the frequency of the waves? find the period of the wave motion?

**Physics**

A car traveling at a constant speed of 39.6 m/s passes a trooper hidden behind a billboard. One second later the trooper starts the car with a constant acceleration of 2.25 m/s^2 . How long after the trooper starts the chase does he overtake the speeding car? Answer in units of s

**Physics**

An airplane moves at 300 mi/hr relative to the air. It must fly from city A to city B, 600 miles due east. One day the wind is blowing at 100 mi/hr in a direction of 30 degrees north of east. Draw a diagram. b. What will the velocity of the plane relative to the ground (value ...

**College Physics**

A 6107 kg elevator is moving 4.6 m/s up. The tension in the elevator cable is 66,512.6 N. Determine the acceleration of the elevator (state the appropriate mks units).

**Diff Eq**

If y(t)=3e^(t^2)is known to be the solution of the initial value problem y'+p(t)y=0, y(0)=y_0, what must the function p(t) and the constant y_0 be?

**Math**

Jim is paid overtime when he works more than 40 hours of per week. Write an expression for the number of hours he works overtime when he works h hours. Find the number of hours Jim works overtime when he works 40, 44, 48, and 52 hours

**spanish**

what is the spanish word for "see you soon"

**physics**

A small rock is thrown vertically upward with a speed of 13.0from the edge of the roof of a 37.0 tall building. The rock doesn't hit the building on its way back down and lands in the street below. Air resistance can be neglected. A) What is the speed of the rock just ...

**math**

sorry i forgot to say that i don't need the answer... i need an equation or expression that models this situation.

**math**

a man who is 5 feet tall stands 15 feet from a lamppost that is 27 feet high. how far away from the man is the tip of his shadow?

**7th grade math**

What's the quickest amount of time that all four kids can get across a bridge with on kid always going back to get the other. 1 kid took 5 minutes 1 kid took 10 minutes 1 kid took 20 minutes 1 kid took 25 minutes

**Business**

Assume that garbage collection is now free. Suppose a local goverment began to charge a household $2 every time that a household put out a can of trash for weekly garbage collection. Using the concept of opportunity cost explain how this might alter behavior.

**math**

you lie sir!!! ^

**Calculus**

A person needs to swim to shore from Point A and walk to Point B. They can swim at 2mph and walk at 4 mph. Write an expression for the total time their journey will time their journey will take in terms of x. Then use your graphing calculator to estimate the value of x which ...

**math**

If a+2b/a-2b=3, determine the value of a+3b/a-3b

**Math**

If you are estimating a problem like 147 divided by 5, is five a 10?

**Social Studies**

Is not A.

**health**

no keep posting its very helpfull

**Math**

A fraction of a square mile is a field that is a 1/2 mile long and 1/4 mile wide. What is the fraction?

**Physical Sciences**

.25L times .5M=.125moles .125 times 40= 5 grams

**Physics**

An air-hockey puck of mass m floats across the table essentially frictionless on a cushion of air. This puck bumps nearly head-on into a second puck that has 3 times the mass, moving in the opposite direction but with the same speed, v i , as the lighter puck. Immediately ...

**math**

a diving board is 4 feet above a pool that is 15 feet deep. The total length of a person's dive is 10 feet. How many feet below the surfac of the water did the person dive

**Earth Science**

I need help with the following Lab due tonight, 7/30/12, as I feel completely lost and would appreciate the help. The lab goes as follows: Design an experiment that illustrates the determination of the density of a cylindrical object found in the Lab Kit. Prepare a dynamic ...

**physics**

If an engine produces a (mass flow rate) of 100kg/s of thrust, what is the force in Newtons?

**Chemistry**

For the reaction 2NH3(g) 3H2(g) N2(g) at 472oC equilibrium is established when [H2] =0.0200M, [N2] = 0.0100M and [NH3] = 5.37x10^_8 M. What is the equilibrium constant for the reverse reaction?

**Physics**

A ball (mass m = 250 g) on the end of an ideal string is moving in a circular motion as a conical pendulum. The length L of the string is 1.84 m and the angle with the vertical is 37 degrees. a) What is the magnitude of the torque (N m) exerted on the ball about the support ...

**Physics**

Any idea how I was hung up on 2nd one?

**Physics**

A ball (mass m = 250 g) on the end of an ideal string is moving in a circular motion as a conical pendulum. The length L of the string is 1.84 m and the angle with the vertical is 37 degrees. a) What is the magnitude of the torque (N m) exerted on the ball about the support ...

**Trig**

Given y=2-4cos(3x-pi/4), find each of the following, giving the general representation of the location of all minimums. Also provide the graph of two full cycles, labeling everything. Domain = Range = Amplitude = Period = Ph. Shft. = Interval for one Complete cycle = ...

**pre cal**

verify identity (sinx-cosx)^2=1-sin(2x)

**Chem!**

20.4

**Algebra 1 (Scientific Notation)**

4.3 x109

**5 grade math**

Min's fish are sick,and she wants to add medicine to the tank. The base of the fish tank measures 40 cm by 25 cm.The tank is filled with water to a height of about 20 cm.How many drops of medicine should Min add to her tank? Reminder:1L=1,000cm squared

**math**

Min's fish are sick,and she wants to add medicine to the tank. The base of the fish tank measures 40 cm by 25 cm.The tank is filled with water to a height of about 20 cm.How many drops of medicine should Min add to her tank? Reminder:1L=1,000cm squared

**chem**

How many moles of C6H12O6 are formed when 0.250 mole of CO2 is consumed in the reaction 6 CO2 + 6 H2O C6H12O6 + 6 O2?

**Physics - Center of Mass**

The density of a 5.0-m long rod can be described by the linear density function λ(x) = 145 g/m + 14.2x g/m2. One end of the rod is positioned at x = 0 and the other at x = 5 m. a) Determine the total mass of the rod. b) Determine the center-of-mass coordinate.

**math**

j costs twice as much as b. b costs twice as much as k. all three letters together cost 17.50. what is the price of each letter?

**world history**

the evolution of the socio political milieu during colonial period, including protestant, christinity impact on colonial social life

**math**

solve csc^2x - cscx + 9 =11

**National Junior Honor Society Essay Check**

Nice essay

**algebra**

If the sales tax is 6.5%, how much tax will you pay on a jacket that costs $48?

**math**

When Ms. Jackson told her students that the circumference of a circle divided by the diameter of the circle is ð, Jarrod asked how this could be true for all circles. Of the following, which provides the best basis for explaining why this is true for all circles?

**english**

would this be a clause

**english**

thank you and the last one is We hit a snag while rowing to shore. and the italicized phrase is (while rowing )

**english**

past participle ?

**english**

so it can be one of these: past participial phrase noun clause adverb clause nominative absolute ellipitical clause but its not a clause

**english**

its confused and sign

**english**

plz help fast

**english**

(confused) is italizied

**english**

What type of clause or phrase is italicized in the sentence below? The driver, confused by the sign, made a wrong turn.

**statistics**

psychologist wants to interview subjects with IQ scores are normally distributed with mean of 100 and standard deviation of 15. find the score that separating the top of IQ frin the bottom 90%

**mathematics - sinusoidal curves**

Arnab means rabbit lol

**english/check please**

I have to change the sentences on the top by adding an interjection and put a punctuation. I need to know did I use the correct interjections and the right punctuations too forget about the spaces before each exclamation . please just correct my interjection words and the ...

**english/check please**

Add an interjection to each of these sentences. Be sure to punctuate correctly. 1- Isn't that beautiful? - Ah! isn't that beautiful ? 2-We're having a test . - My goodness ! Were having a test ! 3- That hurts. - Ouch ! That hurts ! 4- I ripped my best shirt. -Wow...

**english**

Write whether a sentence is simple, compound, complex, or compound-complex. 5-The day of the party arrived, and everyone showed up at the Huang's house in costume. Compound 6-Kim wanted a new watch for a graduation gift. Simple 7-Because she was swimmer,she wanted one that...

**english**

Write whether a sentence is simple, compound, complex, or compound-complex. 1-Mrs. Huang planned a party for Kim because she was graduating from high school. Complex 2=She invited Lisa,Elena,and Enrique to the party. Simple 3-Mr. Huang thought that kim's friends should ...

**english**

A complex sentence made from independent clause and dependent clause joined together

**english**

5-complex

**english**

1-compound 2-complex 3-complex 5-compound

**english**

Write if the sentence is simple, compound,or complex. 1-I'd like to help you ;however,I am very busy today. complex 2-Do you know what Willie said.simple 3-I think that I've seen that movie before.simple 4-The person in the middle of the line is my brother Willie....

**english/help me**

Ralph,who is a student,also has a part-time job. 1)What is the independent clause in this sentence? who is a student,also has a part-time job. 2)What kind of dependent clause is( who is a student) in this sentence? Is it a noun, adjective,or adverb clause? Adjective clause I ...

**english**

Ralph,also has a part time job is the independent

**english/writeteacher**

Ralph,who is a student,also has a part-time job. 1)What is the independent clause in this sentence? also has a part-time 2)What kind of dependent clause is( who is a student) in this sentence? Is it a noun, adjective,or adverb clause? -a noun 1) who is a student,also has a ...

**english**

1) who is a student,also has a part-time job. Is the independent. hope is right.

**english**

1) 2) is an adjective clause. It describe a word or a group of words in another clause.

**english**

1) Ralph,who is a student. Is the independent 2)Adveb clause

**english**

Ralph,who is a student,also has a part-time job. 1)What is the independent clause in this sentence? also has a part-time 2)What kind of dependent clause is( who is a student) in this sentence? Is it a noun, adjective,or adverb clause? -a noun

**english/check please**

1)Mrs King said ," I want a new putter."

**english/check please**

Change each of these indirect quotations to direct quotations.Punctuate your quotation properly. examples: - Mrs king said,"I enjoyed our golf game" _Mrs king said that she enjoyed the golf game. 1)Mrs.King said that she wants a new putter. -Mrs King said," I ...

**english/check please**

4)ok, it has to be compound ? But in my question I have only 2 choices either complex or compound-complex

**english/check please**

the sentence is complex

**english/check please**

4)Because of bad weather,the game was canceled,(ind)but it will be played tomorrow.(dep) and is compound complex IS it better now?

**english/check please**

2)dep clause, complex 4)what is wrong in 4is it all tell me where? 5)both of us know (ind)that we must study hard,(dep)or we will not get into good colleges,(ind) is compound complex

**english/check please**

Find the independent clauses and the dependent clauses.Write wether it is complex or compound-complex 1)Mr and Mrs Johnson play golf(ind) when the weather is warm.(dep)complex 2)What I would like is a vacation. independent,complex 3)Alicia works at the daycare center that is ...

**english /help**

label the subject and the verb of each of each clause. Then write whether the sentence is simple or complex. 1)Every afternoon the baseball team practices. subject: the baseball team verb: practices simple sentence 2)When practice is over, the players are tired. subject:...

**english/Writeacher**

Subjects: 1-team 2-players 3-they 4-baseball did I miss anything ?how about the verbs and sentence (simple, complex ) ?

**english/check please**

Subjects: 1-team 2-players 3-they 5-baseball did I miss anything ?how about the verbs and sentence (simple, complex ) ?

**english/check please**

label the subject and the verb of each of each clause. Then write whether the sentence is simple or complex. 1)Every afternoon the baseball team practices. subject: the baseball team verb: practices simple sentence 2)When practice is over, the players are tired. subject:...

**Desktop publishing- Illistrations**

1.c

**physics**

(a) What is the frequency of a photon whose energy is 3.5 times the rest energy of an electron? (b) What would be the linear momentum of the photon?

**math**

(8x to the 3rd power) (4x to the 2nd power) simplifi

**Physics**

Janet jumps off a high diving platform with a horizontal velocity of 1.73 m/s and lands in the water 1.8 s later. How high is the platform? The acceleration of gravity is 9.8 m/s2 . Answer in units of m

**life orientation**

ENVIRONMENTAL PROBLM

**Physics**

On a frictionless, horizontal air track, a glider oscillates at the end of an ideal spring of force constant 2.30 N/cm. The graph in the figure shows the acceleration of the glider as a function of time. Find the mass of the glider. Find the maximum displacement of the glider ...

**chem**

Calculate the molarity of a solution made by dissolving 0.150 in enough water to form exactly 730 of solution

**Physics**

A mass is oscillating with amplitude A at the end of a spring. How far (in terms of A) is this mass from the equilibrium position of the spring when the elastic potential energy equals the kinetic energy?

**Geometry.**

A park has a circular swimming pool. The diameter of the pool is 18 ft. What is the distance traveled if you swim around the edge of the pool once? Use pi = 3.14 A) 36 ft B) 169.65 ft C) 113.10 ft D) 56.52 ft I think it is [D] but I'm not sure.

**Geometry!**

The distance around the equator of Saturn is about 378,675 km. What is the equatorial diameter of Saturn? Use pi = 3.14. A) 241,209 B) 241,194 C) 120,584 D) 120,597 I think it is [D] but I'm not sure.

**Geometry**

Given that circle Q has a radius of 42, and radii line QR and line QS form an angle of 180, find the exact length of arc RS.

**Geometry**

Point A is 5 feet from the center of the circle and 11 feet from point B. Line AB is tangent to circle O at A. Find OB to the nearest tenth.

**Math**

For the following data... 1. Provide evidence as to whether this data set if Gaussian or non Gaussian. 2. Determine the normal reference range. 3. Define a cut-off. Describe how a ROC curve can be used to determine such. 95 95 81 95 98 79 88 98 84 79 98 84 81 96 102 86 90 101 ...

**Physics**

A satellite used in a cellular telephone network has a mass of 2160 kg and is in a circular orbit at a height of 670 km above the surface of the earth. What is the gravitational force Fgrav on the satellite? Take the gravitational constant to be = 6.67×10−11 N*m^2/...

**Physics**

Four identical masses of mass 900 kg each are placed at the corners of a square whose side lengths are 15.0 cm. What is the magnitude of the net gravitational force on one of the masses, due to the other three?

**Physics**

At what distance above the surface of the earth is the acceleration due to the earth's gravity 0.790 m/s^2 if the acceleration due to gravity at the surface has magnitude .

**Statistics**

18. Suppose that the scores of architects on a particular creativity test are normally distributed. Using a normal curve table, what percentage of architects have Z scores: Above .10? Below .10? Above .20? Below .20? Above 1.10? Below 1.10? Above -.10? Below -.10? You need to ...

**Math**

Brandon's bedroom floor is 12ft by 8ft. How many square feet of carpet are needed to replace his old carpet?

**Math**

June rides the 15 foot tall ferris wheel at the city fair. She enters the ride at the bottom. If the ride makes 8 complete rotations before stopping, what is the total distance that June travels?