Wednesday

October 7, 2015
Total # Posts: 2,385

**chemistry**

What is the mass of a liquid that has q volume of 2.5L and a density of 3g/cm cubbed? I got 7.5, but I am unsure if I should have converted L to mL
*September 23, 2015*

**Physics**

You shoot an arrow straight ahead; it leaves your bow moving parallel to the ground. You find it embedded in the ground 50m away from where you shot it. It makes an 82 degree angle with the level ground , reflecting the direction it was traveling at the time it hit. How fast ...
*September 21, 2015*

**Lifespan Development**

What are some theories, models, and constructs that might influence my perspective on facilitating a counseling session/encounter.
*September 20, 2015*

**english**

Most of the time, the ____ struggles against the main character in a story. A) protagonist B) antagonist C) flat character D) round character
*September 18, 2015*

**Math**

are you ok
*September 16, 2015*

**calculus ab **

Use a graphing utility to graph the function and visually estimate the linits h(x)= -x^2 + 4x
*September 11, 2015*

**Physics**

A small turtle moves at a speed of 186 furlongs per fortnight. Find the speed of the turtle in centimeters per second. Note: 1 furlong = 220 yards, 1 yard = .9144 meters, and 1 fortnight = 14 days.
*September 8, 2015*

**english**

which are state-of-being verbs in following sentences: "While he was biking this morning, Zach had seen a small accident. A huge SUV ran a red light, and the oncoming sedan was unable to stop. Driving on Portland’s narrow streets was dangerous and expensive. The ...
*September 1, 2015*

**L.O.**

Bad road use has a direct impact on the emotional
*August 20, 2015*

**L.O.**

What are the bad road use on the physical community?
*August 20, 2015*

**Chemistry**

So my answer should be something around: When writing the name of an ionic compound containing a cation with more than one oxidation state, use the cation name and write the charge of the cation in roman numerals. For example, when writing out FeSO4, it would come out as iron...
*July 7, 2015*

**Chemistry**

Explain the basic format and the steps needed to name an ionic compound composed of a cation that has a possibility of existing in more than one oxidation state. Is this right: There are four prefixes used when naming ionic compounds: per__ate, -ate, -ite, and hypo__ite. ...
*July 7, 2015*

**fundamentals of law for health information**

what risks does the hospital assume when it takes a case to trial?
*June 11, 2015*

**math**

A textbook search committee is considering 20 books for possible adoption. The committee has decided to select 5 of the 20 for future consideration. In how many ways can it do so?
*May 30, 2015*

**math**

what is 3.4 as a whole number?
*May 18, 2015*

**math**

i had a quiz and that answer wasnt one of them the question was if ryan ran 3.4 miles in 30 minutes at the gym. if he goes to the gym each day for a week and runs the same distance each time how many miles will ryan have run?? the only multiple choice is 23.4 34 3.41
*May 18, 2015*

**math**

thats what i did but it is wrong i got 23.8
*May 18, 2015*

**math**

if a kid ran 3.4 miles in 30 minutes at the gym and he goes everyday for a week at the same distance how many miles will he have run?
*May 18, 2015*

**Chem**

Consider the reaction: A(g)⇌2B(g) Find the equilibrium partial pressures of A and B for each of the different values of Kp. Assume that the initial partial pressure of B in each case is 1.0 atm and that the initial partial pressure of A is 0.0 atm. Make any appropriate ...
*May 15, 2015*

**Chemistry**

From your Dilution Data in the procedure 3 and 4, calculate the initial concentration of Fe3+ (aq) ion for tubes 2-5. 1. Add 5.00ml of 1.00 x10^-3 M KSCN to all tubes. 2. To test tube 1 add 5 ml of 0.200M Fe(NO3)3. 3. Measure 8.00ml of 0.200M Fe(NO3)3 into 25.0ml cylinder. ...
*May 13, 2015*

**Physics**

If the current in a wire of a CD player is 1.10 mA, how long would it take for 3.40 C of charge to pass a point in this wire?physi
*April 30, 2015*

**Physics**

Two electrostatic point charges of +60.0 μC and +57.0 μC exert a repulsive force on each other of 161 N. What is the distance between the two charges? The value of the Coulomb constant is 8.98755 × 109 N · m2/C2. Answer in units of m.
*April 30, 2015*

**5th grade math**

Jeff put small box that is 12 inches long, 8 inches wide, and 4 inches tall inside a box that's 20 inches long, 15 inches wide, and 9 inches high. How much space is left in the larger box?
*April 30, 2015*

**Physics**

An X-ray tube used for cancer therapy oper- ates at 8.8 MV with a beam current of 19 mA striking a metal target. Calculate the power of this beam.
*April 30, 2015*

**Physics**

A net charge of 73 mC passes through the cross-sectional area of a wire in 9 s . What is the current in the wire? The fun- damental charge is 1.602 × 10−19 C.
*April 30, 2015*

**Calculus**

Find the area of the largest rectangle that fits inside a semicircle of radius 10 (one side of the rectangle is along the diameter of the semicircle).
*April 28, 2015*

**Analytical Chemistry**

DrBob222, thank you for the help!
*April 27, 2015*

**Analytical Chemistry**

Any help/advice on answering this question would be a big help! :) The analysis of lead (Pb) in a sample of solder was carried out using atomic absorption spectroscopy as follows. 1.013 g of solder was completely dissolved in a small volume of nitric acid and the solution made...
*April 27, 2015*

**MATH**

Abby, Betty, Cassie, and Dale need to cross the river on a boat. The boat only fits at most two people. If two people go over one must bring it back for the others. Abby takes 1 min., Betty 2 min., Cassie takes 5 min., and Dale takes 10 min.. The time it takes is based on the ...
*April 27, 2015*

**physics**

A body oscillates with simple harmonic motion along the x axis. Its displacement varies with time according to the equation x =5sin πt + π 3( ). The velocity of the body at t = 1.0 s is (-8 m sec )
*April 25, 2015*

**physics**

If the current in a wire of a CD player is 1.10 mA, how long would it take for 3.40 C of charge to pass a point in this wire?
*April 24, 2015*

**physics**

A net charge of 73 mC passes through the cross-sectional area of a wire in 9 s. What is the current in the wire? The fundamental charge is 1.602 × 10−19 C.
*April 24, 2015*

**math **

suppose maya made another sign with an area of 48 square inches. would this sign be larger or smaller than the sign with an area of 48 square centimeters? explain how you know
*April 22, 2015*

**physics**

A balloon rubbed against denim gains a charge of −5.0 µC. What is the electric force between the balloon and the denim when the two are separated by a distance of 3.0 cm? (Assume that the charges are located at a point.) The value of the Coulomb constant is 8.98755...
*April 22, 2015*

**Maths**

Thank you!!
*April 18, 2015*

**Maths**

find the nth term and write an equation to express 4,36,100,196,324 so far I've got 32(n-1) + 4 but it only works for the first two . . .
*April 18, 2015*

**Chemistry**

Isn't this less than the original concentrations?
*April 16, 2015*

**Chemistry**

If you mix 20.0mL of a 3.0M solution with 30mL of a 5.00M solution, determine the concentration in molarity of the new solution.
*April 16, 2015*

**L.A**

Wow that's sad you just told Dawn that you guys are stupid
*April 15, 2015*

**maths grade 11**

Tan (x-10 degrees)+1=3
*April 10, 2015*

**maths grade 22**

Tan (x-10 degrees)+1=3
*April 10, 2015*

**8th grade math**

Company A charges $25.00 for up to 100 minutes, plus $0.50 for each extra minute. Company B charges $50.00 for an unlimited number for minutes. What are the equations for each company?
*April 9, 2015*

**PHYSICS HELP PLEASE!!**

A tangential force acts on the rim of a 2.0 kilogram disk-shaped wheel (0.50 m radius) and gives the wheel an angular acceleration of 4.8 rad/s^2. Neglect friction and find the magnitude of the force
*April 5, 2015*

**Physics**

A tangential force acts on the rim of a 2.0 kilogram disk-shaped wheel (0.50 m radius) and gives the wheel an angular acceleration of 4.8 rad/s^2. Neglect friction and find the magnitude of the force
*April 4, 2015*

**Spanish**

That was my second option, so getting the same answer from another perspective is good to know I'm on the right track.
*March 25, 2015*

**Spanish**

My answer was Monument, and i don't have any choices because the paper is like a worksheet, and doesn't have any vocabulary words. The worksheet is similar to a crossword puzzle.
*March 25, 2015*

**Spanish**

What is a name of a place that can be associated with the things below: 1. La historia, el arte: _____________
*March 25, 2015*

**Physics**

PE = (1/2)kx^2 (46.5) = (1/2)(455)(x)^2 x = 0.452 meters
*March 24, 2015*

**physics**

A coin with a diameter of 1.37 cm is dropped on its edge onto a horizontal surface. It starts rolling with an initial angular speed of 10.5 rad/s and rolls in a straight line without slipping. If the rotation slows with an angular deceleration of 2.34 rad/s 2 , how far does ...
*March 24, 2015*

**Physics**

Los Angeles (32 degrees North, 119degrees West) and Atlanta (33 degrees North, 84 degrees West) are approximately at the same latitude but not longitude. If a crow were to fly between the two cities what is the approximate shortest flight distance in kilometers?
*March 24, 2015*

**Help with Psychology Homework**

Your professor asks you to take a personality test. After taking the test, you read your description of your personality type, and are disappointed that the results do not seem to capture your personality at all. In fact, you think the test probably measures attitudes rather ...
*March 24, 2015*

**trig**

A gear with a radius of 32 centimeters is turning at pi/9 radians/sec. What is the linear speed (velocity) at a point on the outer edge of the gear?
*March 15, 2015*

**statistics**

The mean (μ) of the scale is 83 and the standard deviation (σ) is 10. Assuming that the scores are normally distributed, what is the PROBABILITY that a score falls below 72?
*March 12, 2015*

**health**

I DO ONLINE SCHOOL WHAT ABOUT U FGT (For Gotten Teacher) Or it could be FT (Forgotten Teacher)
*March 10, 2015*

**physics**

What design aspects of the snowmobile make it particulary useful for travel over ice and snow?
*March 10, 2015*

**Art last question for today.**

Yeah it's b lol
*March 9, 2015*

**Art last question for today.**

@biths what do you think?
*March 9, 2015*

**chemistry**

2.56 grams of zinc react with excess phosphoric acid to produce how many molecules of hydrogen gas?
*March 8, 2015*

**physics**

a parent pushes a kid on a swing, A) If the child on the swing rises 2m above the lowest point during each cycle, what is her speed at the lowest point of the swing? B)If the beginning of a cycle (2m above the lowest point) the child is given a push so that her starting speed ...
*March 4, 2015*

**Physics**

A 39-turn circular coil of radius 3.20 cm and resistance 1.00 Ω is placed in a magnetic field directed perpendicular to the plane of the coil. The magnitude of the magnetic field varies in time according to the expression B = 0.010 0t + 0.040 0t2, where B is in teslas and...
*March 3, 2015*

**Physics**

A 24.8-g bullet is fired from a rifle. It takes 2.15 × 10-3 s for the bullet to travel the length of the barrel, and it exits the barrel with a speed of 778 m/s. Assuming that the acceleration of the bullet is constant, find the average net force exerted on the bullet.
*March 1, 2015*

**Physics**

The brakes of a truck cause it to slow down by applying a retarding force of 7760 N to the truck over a distance of 870 m. What is the work done by this force on the truck?
*March 1, 2015*

**tablun elementary school**

There is no way to solve this with this information.
*March 1, 2015*

**Physics**

Power is Work/Time, or Force*Distance/Time. You have a velocity, which is Distance over time, so you need to find the force that the winch needs to pull the block upwards. That force is the frictional force (coefficient of friction* normal force) + the force of gravity down ...
*February 28, 2015*

**math**

in number 13,407.036 there are two 3's explain how the values of the 3's are related?
*February 27, 2015*

**math**

in the number 13,407.036 the are two 3's explain how the values of 3's are related?
*February 26, 2015*

**trig with enough info?**

Two oil Wells are 4 km and 6 km from the river. The points along the river are 8 km apart. Find the common loading point on the river, using the shortest amount of pipe.
*February 25, 2015*

**trig**

Two oil Wells are 4 km and 6 km from the river. The points along the river are 8 km apart. Find the common loading point on the river.
*February 25, 2015*

**Physics**

What is the wavelength of visible light emit- ted at 4.2 × 108 MHz?
*February 20, 2015*

**MATH**

determine the average savings balance on a particular day. error of tolerance is 50. what is the minimum number of accounts he must sample to construct a 95% confidence interval. the standard deviation is 350
*February 19, 2015*

**Prob/Stats**

determine the average savings balance on a particular day. error of tolerance is 50. what is the minimum number of accounts he must sample to construct a 95% confidence interval. the standard deviation is 350
*February 19, 2015*

**Physics**

There are a few different horsepower definitions - imperial, metric, DIN etc but an average conversion factor is 1hp = 745W Generator input = 1500 * 745 W = 1117500W Generator output = 1117500W * 80.0% = 894000W (3 sig figs) Current = 894000W / 1910V = 468.06A
*February 16, 2015*

**Physics**

A spring with a spring constant of 40.1 N/m is attached to different masses, and the system is set in motion. What is its period for a mass of 2.8 kg?
*February 11, 2015*

**Physics **

A weight suspended from a spring is seen to bob up and down over a distance of 11 cm twice each second. What is its frequency? Answer in units of Hz. 002 (part 2 of 3) 10.0 points What is its period? Answer in units of s. 003 (part 3 of 3) 10.0 points What is its amplitude? ...
*February 6, 2015*

**Physics **

A weight suspended from a spring is seen to bob up and down over a distance of 11 cm twice each second.
*February 5, 2015*

**Math**

In “Adventures of Isabel,” how is the doctor different from Isabel’s other enemies—the bear, the witch, and the giant? He is Nice to Her He Frighten Her He gets killed He may be Real Witch one pls? I think It's The first one..
*February 2, 2015*

**physics**

A juggler tosses a ball h = 2 m into the air with one hand and catches it with the other hand at the same level. Neglecting air resistance, how long is the ball in the air?
*January 29, 2015*

**college mathematics 1**

describe the graph of g(x)=f(x)+1 relitave to f(x)
*January 29, 2015*

**Calculus**

A hot air ballon lifts off the earth 300m away from an observer and rises straight up at a rate of 80m/min. At what rate is the angle of inclination of the observers line of sight increasing at the time the balloon is 300, above the ground?
*January 29, 2015*

**Physics**

In an action movie, the heroine is supposed to jump with a motorcycle from the roof of one skyscraper to another one. The roof of the second skyscraper is h=9 meters lower, and the gap between the buildings is d=15 meters wide. Both roofs are horizontal and flat. Neglecting ...
*January 27, 2015*

**Physics**

A juggler tosses a ball h = 2 m into the air with one hand and catches it with the other hand at the same level. Neglecting air resistance, how long is the ball in the air?
*January 27, 2015*

**Physics**

If you throw a ball into the air at some angle with respect to the horizontal, which of the following statements about the ball is true? The acceleration is zero at the top of the motion The horizontal component of the velocity is zero at the top of the motion The velocity is ...
*January 27, 2015*

**Physics**

Pease evaluate the statements by choosing from these three statements Always true: the statement is true under any circumstances Not necessarily true: the statement may be true in some circumstances, but not in others Always false: under no circumstances is this true 1. If you...
*January 27, 2015*

**Physics**

The captain of a boat wants to travel directly across a river that flows due east with a speed of 1.09 m/s. He starts from the south bank of the river and wants to reach the north bank by travelling straight across the river. The boat has a speed of 6.44 m/s with respect to ...
*January 27, 2015*

**Physics**

The air speed indicator of a plane that took off from Detroit reads 349 km/h and the compass indicates that it is heading due east to Boston. A steady wind is blowing due north at 46.5 km/h. a) Calculate the speed of the plane with reference to the ground. b) If the pilot ...
*January 27, 2015*

**Physics**

A swimmer is heading straight for the other shore of a river with a velocity of vs=0.5 m/s relative to the water, but is carried away by the current, which has a velocity of vr=0.4 m/s. It takes her 20.6 s to get across. How far downstream does she end up?
*January 27, 2015*

**Physics**

During a long airport layover, a physicist father and his 8-year-old daughter try a game that involves a moving walkway. They have measured the walkway to be 41.5 m long. The father has a stopwatch and times his daughter. First, the daughter walks with a constant speed in the ...
*January 27, 2015*

**Physics **

A man in search of his dog drives first 13.3 mi northeast, then 17.3 mi straight south, and finally 6.85 mi in a direction 30.3° north of west. 1. a) What is the magnitude of his resultant displacement? 2. b) What is the direction of his resultant displacement? Express ...
*January 27, 2015*

**Physics**

A 26.3 g marble sliding to the right at 21.0 cm/s overtakes and collides elastically with a 13.3 g marble moving in the same direction at 12.2 cm/s. After the collision, the 13.3 g marble moves to the right at 23.7 cm/s. Find the velocity of the 26.3 g marble after the collision.
*January 27, 2015*

**Physics**

A 2170 kg car moving east at 10.5 m/s collides with a 3230 kg car moving east. The cars stick together and move east as a unit after the collision at a velocity of 6.00 m/s. a) What is the velocity of the 3230 kg car before the collision? Answer in units of m/s. 016 (part 2 of...
*January 26, 2015*

**Physics**

A railroad car with a mass of 2.33 × 104 kg moving at 3.71 m/s collides and joins with two railroad cars already joined together, each with the same mass as the single car and initially moving in the same direction at 1.44 m/s. a) What is the final speed of the three ...
*January 26, 2015*

**Physics **

A 26.3 g marble sliding to the right at 21.0 cm/s overtakes and collides elastically with a 13.3 g marble moving in the same direction at 12.2 cm/s. After the collision, the 13.3 g marble moves to the right at 23.7 cm/s. Find the velocity of the 26.3 g marble after the ...
*January 26, 2015*

**Physics**

Two carts with masses of 4.3 kg and 3.9 kg move toward each other on a frictionless track with speeds of 5.6 m/s and 5.0 m/s, respec- tively. The carts stick together after colliding head-on. Find their final speed.
*January 26, 2015*

**Physics **

A 2170 kg car moving east at 10.5 m/s collides with a 3230 kg car moving east. The cars stick together and move east as a unit after the collision at a velocity of 6.00 m/s. a) What is the velocity of the 3230 kg car before the collision?
*January 26, 2015*

**Physics **

A football punter accelerates a 0.53 kg foot- ball from rest to a speed of 8.6 m/s in 0.24 s. What constant force does the punter e
*January 25, 2015*

**Physics**

A 83.8 kg astronaut is working on the en- gines of a spaceship that is drifting through space with a constant velocity. The astronaut turns away to look at Earth and several sec- onds later is 39.6 m behind the ship, at rest relative to the spaceship. The only way to re- turn ...
*January 25, 2015*

**math**

The area is the trinomial and the side lengths are the binomials
*January 25, 2015*

**Science**

Every individual including young people can make decisions to use resources wisely use the terms reduce reuse and recycle to explain how the students in the image above can help minimize solid waste. HELP LAST DAY TO DO THIS I NEED AN ANSWER.
*January 22, 2015*

**physics**

A 10.7 kg bowling ball moves in a straight line at 4.26 m/s. How fast must a 2.55 g Ping-Pong ball move in a straight line so that the two balls have the same momentum?
*January 21, 2015*

**12 Math**

slope: 22 instantaneous: 22 1/2
*January 21, 2015*