Sunday

April 20, 2014

April 20, 2014

Total # Posts: 170

**AP Chemistry**

insoluble bases include, Ni(OH)2 and Mg(OH)2.

**chemistry**

Fe(S)+ 2 HCl(ag) --> FeCL2(ag)+ H2(g What mass of H2 (g) is produced from the reaction of 5.2 Fe(s) with excess hydrochloric acid?

**Physics**

A small object of mass 3.00 g and charge -13 µC "floats" in a uniform electric field. What is the magnitude and direction of the electric field?

**physics**

Two particles are in a uniform electric field whose value is +4000 N/C. The mass and charge of particle 1 are m1 = 1.0x10-5 kg and q1 = -15 µC, while the corresponding values for particle 2 are m2 = 3.0 x10-5 kg and q2 = +35.0 µC. Initially the particles are at res...

**physics**

I already figured it out MYSELF

**physics**

A 6.6 nC charge is located 2 m from a 4 nC charge. Find the magnitude of the electrostatic force that one charge exerts on the other.

**math**

You have a five gallon bucket and a three gallon bucket. How do you get exactly four gallons of water with using the five gallon and three gallon bucket?

**physics**

A Carnot engine operates between 170°C and 20°C. How much ice can the engine melt from its exhaust after it has done 6.0 104 J of work? i need a step by step process. you don't have to give me the answer.

**Physics**

One gram of water changes from liquid to solid at a constant pressure of 1.00 atm and a constant temperature of 0°C. In the process, the volume changes from 0.60 cm3 to 1.14 cm3. Find the work done on the water? Find the change in the internal energy of the water?

**physics**

A tennis player standing 11.5 m from the net hits the ball at 2.60° above the horizontal. To clear the net, the ball must rise at least 0.252 m. If the ball just clears the net at the apex of its trajectory, how fast was the ball moving when it left the racquet?

**Pre Calc**

find the magnitude and direction angle of the vector v, v=-2i+5j please help i have no idea how to do this. could you show me step by step?

**physics**

A merry go round has a radius of 3.5 meters. How far does a child standing at the edge travel (path length) if the wheel is rotated 13.0 radians?

**physics**

The force produced by Earth's gravity on a 70 kg man standing on the moon is more than 0.5 N True or False?

**physics**

A rocket is fired straight up through the atmosphere from the South Pole, burning out at an altitude of 208 km when traveling at 5.8 km/s. (a) What maximum distance from Earth's surface does it travel before falling back to Earth? I know how to do the work, but i can't...

**physics**

A rocket is fired straight up through the atmosphere from the South Pole, burning out at an altitude of 208 km when traveling at 5.8 km/s. (a) What maximum distance from Earth's surface does it travel before falling back to Earth?

**science**

Colon?

**5th grade math**

Wow thanks Ms. Sue!

**5th grade math**

What is the highest number of pi?

**English **

What type of writing dominated the American Age of Reason?

**English **

Why is Taylor's passage 'With rivers like green ribbons smaragdine' rich in imagery?

**english**

Upon passing the site of her burned home, Bradstreet

**english**

ty

**english**

What happened to John Howland?

**English**

ty

**English**

How long did the journey to Virginia actually take Smith and the colonists?

**physics**

A 755 N man stands in the middle of a frozen pond of radius 9.0 m. He is unable to get to the other side because of a lack of friction between his shoes and the ice. To overcome this difficulty, he throws his 1.2 kg physics textbook horizontally toward the north shore at a spe...

**physics**

Barry Bee is flying through the air when he is struck by a truck. Which encounters more force, him or the truck?

**Physics**

While blowing its horn of f=524 Hz a car accelerates at 0.8m/s^2 the car starts from rest by your side and moves away. Find the time it taked for the frequency you hear to decrease by 5%. Hint: Dont forget to include the time it takes for sound to reach you any help would be g...

**physics**

i figured out everything except A)the force on tarzan from the vine

**physics**

Tarzan, who weighs 820 N, swings from a cliff at the end of a 20.0 m vine that hangs from a high tree limb and initially makes an angle of 22.0° with the vertical. Assume that an x axis extends horizontally away from the cliff edge and a y axis extends upward. Immediately ...

**physics-energy**

A toy gun uses a spring to project a 5.3 g soft rubber sphere vertically. The spring constant is 8.0 N/m, the barrel of the gun is 15 cm long, and a constant frictional force of 0.032 N exists between barrel and projectile. How high does the projectile go if the spring was com...

**math**

(x2-x1)/(y2-y1)

**Biology**

19. a 20. b 21. b 22. d

**Politics**

If an individual decides to drop out from running for office (Senate), what happens to the money that was donated and raised for the campaigning? Where does it go?

**Physics -energy**

A 80 kg diver steps off a 10 m tower and drops from rest straight down into the water. If he comes to rest 5.0 m beneath the surface, determine the average resistance force exerted on him by the water.

**Physics**

A horizontal force of 150 N is used to push a 33.0 kg packing crate a distance of 6.65 m on a rough horizontal surface. If the crate moves at constant speed and the work done is 997.5 joules. What is the coefficient of kinetic between the crate and the surface.

**Physics**

The answer is 433.719 joules. You find the sum of the x forces by taking 110*cos31.1 - 19.5*9.81*.156 which gives you 64.35 Newtons. You put that answer in the Work formula. Work equals force * distance so take 64.35*6.74 meters and you get your answer, 433.719 Joules.

**Math**

which fraction is the greatest 1/2 2/6 3/4 3/8

**Physics**

I got all but this problem. A 0.145-kg baseball is pitched at 42.0 m/s. The batter hits it horizontally to the pitcher at 58 m/s. A. Find change in momentum? Is it =.145*58-(-.145*42)=1.45-kg m/s? B. If bat and ball are in contact for 4.6 x 10-4 s, what is average force durin...

**Physice**

I got all but this problem, I A 0.145-kg baseball is pitched at 42.0 m/s. The batter hits it horizontally to the pitcher at 58 m/s. A. Find change in momentum? Is it =.145*58-(-.145*42)=1.45-kg m/s? B. If bat and ball are in contact for 4.6 x 10-4 s, what is average force duri...

**Physics**

Thank you.

**Physics**

An ice skater spins with his arms outstretched. When he pulls his arms in and raises them above his head he spins much faster than before. Did a torque act on the ice skater? If not how could his angular velocity have increased?

**french**

what does le premier etage mean

**6th grade**

Is as cool as ice an idiom?

**economics**

As tradition has it, Santa Claus is coming on the 5th of December from Spain to the Netherlands to bring gifts to Dutch children. Help is needed to distribute the gifts for which the Santa Claus committee is hiring helpers, so-called Zwarte Pieten. There are two types of Zwart...

**Algebra**

how to I find an equation of a line given two points on that line (not using a graph) example:(1,5)(2,7)

**Grade 12 Data Management**

Two cards are drawn without replacement from a deck of 52 cards. a. What is the probability of drawning 2 aces? b. What are the odds in favour of drawing 2 honour cards? (A, K, Q, J, 10)

**Language**

I Have A Big Project And I Need Antynoms For Muzzle(the Device)

**Technology**

Organized data about the design,production,operation,maintenance,and service of human made products and structures is known as

**science**

Although most salamanders have four legs, the aquatic salamander shown below resembles an eel. It lacks hind limbs and has very tiny forelimbs. Propose a hypothesis to explain how limbless salamanders evolved according to Darwin's theory of natural selection.

**P.E.**

I'm Doing Flag Football At School And I Have A CROSSWORD So Here Are My Questions 13Lt Moving Across The Line Of Scrimmage Too Early 9Lt An Offesive Player Responsible For Catching Pases 12Lt When The defensive Team Catches A Pass Meant For The Other Team 6Lt The Player Th...

**Physics**

7.7 is the height in this problem not the speed.

**Social studies word unscramble**

I Have Two Diferent Words I need to unscramble DEIMEATT And NENLETHMEGIN

**Math**

The MPG for a certain compact car is normally distributed with a mean of 31 and a standard deviation of 0.8. what is the probability that the MPG for a randomly selected compact car would be less than 32?

**Math**

This is a rounding quotients! Can you switch the numbers?

**Math**

Divide. Round to the nearest tenth. 17/6 How do you divide 17 into 6??

**physics**

a 100% D

**math**

can you give some examples of how to write decimal in word form? ie. 2.648 Thanks!

**trig**

Solve for the unknown. Assume that all of the angles are acute. 1. U = 69 A = 75 AN = 56 NU = ______ is this right NU= 92.05

**trig**

Quadrant I tan terminal= 2 what is csc terminal

**trig**

find the exact value for each function tan pi/3 cos pi/4

**Chemistry**

A gas initially at 20C must be changed to ? C to triple the pressure.

**physical science**

a 1.0 kg sample of metal with a specific heat of 0.50KJ/kgCis heated to 100.0C and then placed in a 50.0g sample of water at 20.0C. What is the final temperature of the metal and the water? I can't figure this out. Is the answer room temperature???

**Math Riddle**

If its the youngest child who's hair color is given, the solution is {1,6,6} it has nothing to do with the actual hair color, but with mentioning that there exists a unique youngest (or oldest) child to remove the ambiguity in the two age sets with identical sums (i.e. {1,...

**computer progaming**

can anyone give me infomoration on Novell Enterpise open server im helping my dad with his online class homwork and i was wondering if i can get help? Ah...the days of homework have changed. It used to be that parents had to help their kids with homework. Now it's kids hel...

**English**

Are claims about moral issues subjective, objective or a matter of debate? Subjective and a matter of debate (but no one will really win the debate!) mor·al (môr'əl, mŏr'-) adj. Of or concerned with the judgment of the goodness or badness of huma...

**English**

Are all controversial matters subjective or relative? Yes. con·tro·ver·sial (kŏn'trə-vûr'shəl, -sē-əl) adj. Of, producing, or marked by controversy: a controversial movie; a controversial stand on human rights. Fond o...

**Social Studies**

Witch country brought basball to the central american countries? Who brought slaves to the central american countries? Witch Country brought The religan Roman Cathlic to the central american countries? witch country brought ecomic aid to the central american countries? Witch c...

**international business**

I agree lol...you can read all that you want to in the book but it's still not enough to help you do this assignment. This assignment requires research on the Internet, and I myself always seek the input of other's...that makes us better and smarter students! AIU Stude...

**math**

1. x-3 7x-3x = 4 x -6 turns into +6 so 4x=12 x=3 2. 13=5-13+3x 13=-8 +3x 21 = 3x x=7 3. x+x+x+3x+2-6 = 31 6x -4 = 31 6x=35 = 5.83 (are you sure its 3 x's?) 5. 5-t-t=-1 5-2t=-1 -2t = -6 t= 3