Wednesday

December 17, 2014

December 17, 2014

Total # Posts: 75,670

**physics**

on the surface of planet y, which has a mass of 4.38 x10^24 kg, an object has a weight of 50.0 N and a mass of 30.0 kg. What is the radius of this planet?
*November 24, 2014*

**English**

My teammates and___ practice every day after classes are over. a.I b.me c.my d.us I am think a ___ said in our orientation that we much make our decisions about how we are going to make a difference. A.It B.Our Leader C. They D. Them I am think B ____of my friends believe__ ...
*November 24, 2014*

** ratios and proportional relationships **

if a tiger eat food that weights up to 15% of its body weight and it eats 75 pounds of food how much does the tiger weigh
*November 24, 2014*

**Math**

As a savings plan for college, when their son Bill was born, the Johnson's deposited $10,000 in an account paying 4% compounded quarterly. How much is this account when Bill is 18 years old?
*November 24, 2014*

**Calculus**

What does y'' mean in calculus? Is there a word for it? Also is there a word for f'(x)? Thanks.
*November 24, 2014*

**math**

Jane had $7 and her sister had $2. Their parents gave each of them an equal amount of money. Then, Jane had twice as much money as her sister. How much money did their parents give each of them
*November 24, 2014*

**grammar**

Which is a similie? A) riding like the wind or B) looked like they had come from far
*November 24, 2014*

**government**

three types of political party systems and how they affect governing
*November 24, 2014*

**Spanish 1 question**

How are lunch traditions changing in the Spanish-speaking world, and why?
*November 24, 2014*

**Spanish**

What is a bodegón? What is its significance?
*November 24, 2014*

**Pre-Calc/Trig**

okay thank you
*November 24, 2014*

**Pre-Calc/Trig**

is the integer n odd or even, explain
*November 24, 2014*

**chemistry**

If you need to multiply the following reaction by 2 to be an intermediate reaction in a Hess's law problem, what would be the final value for the enthalpy of reaction you use for this intermediate reaction? C2H4 + 3 O2 2 CO2 + 2 H2O, H = -1410 kJ
*November 24, 2014*

**statistics**

from the following list of numbers of discharges each day in september, compute the mean, mode, and range.
*November 24, 2014*

**physics**

is it possible to a have a percentage difference of zero in physics
*November 24, 2014*

**accounting**

On October 10, 2010, Mason Engineering Company completed negotiations on a contract for the purchase of new equipment. Under the terms of the agreement, the equipment may be purchased now or Mason may wait until January 10, 2011, to make the purchase. The cost of the equipment...
*November 24, 2014*

**chemistry**

0.195 m of ca oh 2 solution to neutralize 750 ML of a 0.235 m of hno3 and balance it
*November 24, 2014*

**Pre-Calc/Trig**

Help me please, I don't understand this write using exponential notation √ 36* 3√ 64 oh and 3 is an exponent
*November 24, 2014*

**physics**

n=1, L=0, m=0 n=2, L=0, m=0 L=1, m= -1, 0, 1 n =3, L=0, m=0 L=1, m= -1, 0, 1 L=2 , m=-2,-1,0,1,2 n =4 L=0, m=0 L=1, m= -1, 0, 1 L=2, m=-2,-1,0,1,2 L=3, m=-3,-2,-1,0,1,2,3 n=5, L=0, m=0 L=1, m= -1, 0, 1 L=2, m=-2,-1,0,1,2 L=3, m=-3,-2,-1,0,1,2,3 L=4, m=-4,-3,-2,-1,0,1,2,3,4 The...
*November 24, 2014*

**physics**

it takes about 560 kilowatts to run a diesel locomotive at speed around 180km/h.Magnetically levitated trains(mag levs) on the other hand require less power because the magnetic levitation eliminates energy loss to friction.The worst maglev system requires 270 watts to ...
*November 24, 2014*

**Math**

Given TriangleABC with a = 9, b = 15, and m<A= 28 degrees, find the number of distinct solutions. I got two solutions. Not sure if I am correct though.
*November 24, 2014*

**Math**

Given TriangleABC with a = 9, b = 15, and m<A= 28 degrees, find the number of distinct solutions. I got two solutions. Not sure if I am correct though.
*November 24, 2014*

**Math**

Given TriangleABC with a = 9, b = 15, and m<A= 28 degrees, find the number of distinct solutions. I got two solutions. Not sure if I am correct though.
*November 24, 2014*

**Math**

Determine the linear velocity of an object with an angular velocity of 8.1 radians per second at a distance of 10 centimeters from the center. Use pi. Round the answer to the nearest tenth. I got 47, is this correct?
*November 24, 2014*

**math**

Ron will have 10 dimes
*November 24, 2014*

**statistics**

your medical terminology instructor listed the following grades for the class out of a 75-point: 33,34,43,45,45,54,59,60,62,64,66,67,68, 67,68,68,69,70,70
*November 24, 2014*

**physics**

A(n) 1949.1 kg car is coasting along a level road at 22.9 m/s. A constant braking force is applied, such that the car is stopped in a distance of 74.6 m. What is the magnitude of the braking force? Answer in units of N
*November 23, 2014*

**chemistry**

Use the Henderson-Hasselbalch equation to calculate the pH of a solution that is 0.140M in propanoic acid and 0.120M in potassium propanoate
*November 23, 2014*

**physics**

It's due in 5 minutes just tell me the answer.
*November 23, 2014*

**physics**

A 1.2kg lead ball is launched off a cliff top at 16m/s at an angle of 20 degrees above the horizontal. The height of the horizontal is 15m. Determine the net force acting on the lead ball that caused the ball to drop 4.0m from point P.
*November 23, 2014*

**chem**

If a sample of gas has a volume of 8.20
*November 23, 2014*

**math**

(1/3)/(7/9)=0.428... 9/21=0.428... yes this is correct! :)
*November 23, 2014*

**Chemistry**

If 120. grams of KClO3 reacts, how many grams of oxygen are produced?
*November 23, 2014*

**Probability**

You have a blind date with a physics major. From your social networking experience, you know that 10% of physics majors are immature, 50% are narcissistic, and 90% are boring. Assume that immaturity, narcissism, and boringness are independent events. Calculate the probability ...
*November 23, 2014*

**statistics**

You have a face-to-face statistics class in the traditional classroom setting. There are 25 males and 45 females enrolled. You’re the instructor so you like to arrive in the classroom before the first students arrive. What is the probability that the first student who ...
*November 23, 2014*

**statistics**

An introductory psychology class has 9 freshman males, 15 freshman females, 8 sophomore males, and 12 sophomore females. If one student is randomly selected from this class, what is the probability of selecting a female? Round to the nearest hundredths place if a fraction
*November 23, 2014*

**Geometry**

Emalee, there is no picture to go with this question. Please share so I can help you!
*November 23, 2014*

**physics**

A sled on ice moves in the ways described in the questions below. Friction is so small that it can be ignored. A person wearing spiked shoes standing on the ice can apply a force to the sled and push it along the ice.Which force would keep the sled moving toward the right and ...
*November 23, 2014*

**Chemistry**

Draw all of the possible alkyne isomers of CH≡CCH2CH2CH2CH3.
*November 23, 2014*

**Health And Physical Ed**

All of them
*November 23, 2014*

**physics**

Air at 1 atm is inside a cylinder 17.9 cm in radius and 17.9 cm in length that sits on a table. The top of the cylinder is sealed with a movable piston. A 24.1-kg block is dropped onto the piston. a) From what height above the piston must the block be dropped to compress the ...
*November 23, 2014*

**American Government**

When Congress prepares a budget
*November 23, 2014*

**Mechanical Behavior of Materials**

400
*November 23, 2014*

**physics. I waited over two days for response**

An 800kg police boat slows down uniformly from 50km/h (E) to 20km/h(E) as it enters a harbour. If the boat slows down over a 30m distance, what is the force of friction of the boat? (Hint: you will need to convert the velocities into m/s) please show your work.
*November 23, 2014*

**Calculus**

Use Riemann sums and limits to compute the area bounded by f(x) = 10x+9 and the x axis between x=10 to x =5 The area is = to
*November 23, 2014*

**maths**

so 4n-1 9th term would be 35 and 10th term would be 39. The sum is 74. I'm in grade four. I just figured it out.
*November 23, 2014*

**Science PLEASE HELP**

How does Exothermic and Endothermic reactions affect the rate of a reaction? Please help. I need something that will be easy for me to understand and adopt into my own words. Thank You :)
*November 23, 2014*

**Science**

How does Exothermic and Endothermic reactions affect the rate of a reaction? Please help. I need something that will be easy for me to understand and adopt into my own words. Thank You :)
*November 23, 2014*

**Stats**

21.4 A student survey. Tonya wants to estimate what proportion of the students in her dormitory like the dorm food. She interviews an SRS of 50 of the 175 students living in the dormitory. She finds that 14 think the dorm food is good.
*November 23, 2014*

**Chemistry**

A student was given a 2.45 g of impure potassium sulfate (K2SO4) sample. He dissolved this sample in 100 mL of water first and then added some barium chloride (BaCl2) solution. A 2.15 g of BaSO4 precipitate was obtained at the end of the reaction. What is the percent purity of...
*November 22, 2014*

**physics**

Consider a very small hole in the bottom of a tank that is 17.0 cm in diameter and filled with water to a height of 90.0 cm. Find the speed at which the water exits the tank through the hole. A) 48.3 m/s B) 44.1 m/s C) 17.64 m/s D) 4.20 m/s
*November 22, 2014*

**physics**

When a container of water is placed on a laboratory scale, the scale reads 120 g. Now a 20-g piece of copper (of density 8.9 g/cm3) is suspended from a thread and lowered into the water, not touching the bottom of the container. What will the scale now read? The density of ...
*November 22, 2014*

**Excel**

I know how to insert error bars in the bar graph on Google spreadsheet, but for some reason I couldn't, due to the drop-drown of the series section consisting of only column 1 and not the other.How can i fix this problem?
*November 22, 2014*

**Question**

That not helping me
*November 22, 2014*

**Question**

Describe what children while children playing would learn in a block center
*November 22, 2014*

**Chemistry**

Rates of Reactions I am conducting a experiment on increasing the rate of a reaction by increasing the surface area. For this I am reacting hydrochloric acid and marble chips. Variables:- -Independent: the mass of marble chips -Dependent: The volume of gas -Controlled: Temp of...
*November 22, 2014*

**Chemistry**

Rates of Reactions I am conducting a experiment on increasing the rate of a reaction by increasing the surface area. For this I am reacting hydrochloric acid and marble chips. Variables:- -Independent: the mass of marble chips -Dependent: The volume of gas -Controlled: Temp of...
*November 22, 2014*

**Biology**

Would glucose be considered a reactant in glycolysis? Also, some sites are saying that 4 ADP molecules are also reactants, but I don't understand how?
*November 22, 2014*

**Physics**

A 4.0-kg cylinder of solid iron is supported by a string while submerged in water. What is the tension in the string? The density of iron is 7860 kg/m3 and that of water is 1000 kg/m3. A) 34 N B) 2.5 N C) 24 N D) 40 N E) 20 N
*November 22, 2014*

**chemistry due soon**

I agree.
*November 22, 2014*

**Biology**

How do the two ATP molecules charge the glucose molecule in glycolysis?
*November 22, 2014*

**Physics**

A water tank is filled to a depth of 10 m, and the bottom of the tank is 20 m above ground. A water-filled hose that is 2.0 cm in diameter extends from the bottom of the tank to the ground, but no water is flowing in this hose. The water pressure at ground level in the hose is...
*November 22, 2014*

**Science**

i am using a caliper to measure the skull of a mouse
*November 22, 2014*

**Science**

uncertainty for a tenth of a mm?
*November 22, 2014*

**Science**

what is an uncertainty? From reading the internet, is it a way to express potential error and that the actual value is between +/-#? what would be the uncertainty for this: electronic balance measuring to the tenth of a gram? is it +/- 0.05?
*November 22, 2014*

**maths**

If the cost of 2 score pens is 280, then the cost of 2 dozen pens will be?
*November 22, 2014*

**Reading-yes,this is the article**

"Is Facebook making us lonely" Just to check my understanding on this article,I decided to write a summary.. Please check by reading this article.. Basically the author is trying to say that Facebook connects people with each other but it does not bond people ...
*November 22, 2014*

**Math**

how did you work this out please ?
*November 22, 2014*

**Math**

Resolve in partial fractions (x+6)/((x^2+1)(x-2)^2) Using let x = ...
*November 22, 2014*

**Math**

The fourth term of A P is 37 and the 6th term is 12 more than the fourth term.find the first and the seven terms
*November 22, 2014*

**Physic**

Two wave pulses on a string approach one another at the time t = 0, as shown in the figure below, except that pulse 2 is inverted so that it is a downward deflection of the string rather than an upward deflection. Each pulse moves with a speed of 1.0 m/s. Make a careful sketch...
*November 22, 2014*

**MATH**

Kyle is making a model of an Egyptian pyramid for his history class. Each side of the pyramid he makes has a base of 18.6 cm and height 14.8 cm. Calculate the height of Kyle's pyramid to the nearest tenth of a centimeter. Don't I need an angle to calculate this? I don...
*November 21, 2014*

**Math**

A tightrope walker attaches a cable to the roofs of two adjacent buildings. The cable is 23.5 m long. The angle of inclination of the cable is 13 degrees. The shorter building is 12.0 m high. What is the height of the taller building to the nearest tenth of a metre? I tried ...
*November 21, 2014*

**Reading**

"Is Facebook making us lonely" Just to check my understanding on this article,I decided to write a summary.. Please check by reading this article.. Basically the author is trying to say that Facebook connects people with each other but it does not bond people ...
*November 21, 2014*

**science**

which of the following shows the path followed by nerve impulses in a reflex motor neurons,interneurons in brain,sensory neurons or sensory neurons,interneurons in brain, motor neurons
*November 21, 2014*

**Math Help!!!**

-9
*November 21, 2014*

**math**

15 in long
*November 21, 2014*

**Physics**

Thank you, but the centripetal acceleration is wrong, 2.95 m/s^2 is wrong.
*November 21, 2014*

**Physics **

A marble rolls down an incline of 30 degrees. If the marble is initally at rest at the top of the incline of length 2.0 meters what will the speed of the marble be at the bottom of the incline (a) if the incline is rough enough to prevent any slipping [ it rolls],then (b) if ...
*November 21, 2014*

**Math Help!!!**

define each term and give at least 2 examples of each whole numbers natural numbers integers rational numbers irrational numbers
*November 21, 2014*

**math**

write the folowing in ascending order:2/3, 1/2, 4/5, 7/20
*November 21, 2014*

**algebra 2**

12x^2-2x-2=0
*November 21, 2014*

**Question**

What can be in a Manipulative &Math Center
*November 21, 2014*

**math**

You get 2 imaginary solutions x=12.5+706.9962871189636i x=12.5−706.9962871189636i
*November 21, 2014*

**Question**

What are Behavioral Objective for a Hopscotch
*November 21, 2014*

**Math**

The product of Greg's age and 5 is 55 Use the variable G to represent Greg's age
*November 21, 2014*

**Math**

A group of scientists found a new species of spider in the desert. The body temperature of the spider appears to vary sinusoidal over time. A maximum body temperature of the spider reaches 125? after 15 minutes from the start of the examination. Then, 14 minutes later, the ...
*November 21, 2014*

**Physics**

A 24.5-kg child is standing on the outer edge of a merry-go-round which has moment of inertia 989 kg • m2 and radius 2.40 m. The entire system is initially rotating at 0.180 rev/s. Find the angular velocity if the child moves to a final position 1.10 m from the center of ...
*November 21, 2014*

**MAth Help**

The function f(t)=22sin(piT/3 -5)+80 is used to represent the changes in temperature of a chemical compound used in a lab. What is the vertical shift? I got the answer of 6. Is this correct?
*November 21, 2014*

**math**

And its maximum temperature, I got 25 celcius.
*November 21, 2014*

**math**

The temperature in your house is controlled by a thermostat. The temperatures will vary according to the sinusoidal function:f(x)=6sin(pi/12(x-11)+19, where f(x) represents the temperature in degrees Celsius (°C) and x is hours since midnight. What is the temperature of ...
*November 21, 2014*

**Spanish Practice--Plz help?**

Well..I'm really stuck on this.
*November 21, 2014*

**Spanish Practice--Plz help?**

Use the six Spanish terms below to write about something in a traditional classroom. Make sure to use the correct number(s) for the nouns and the correct present tense form of the verb. mochila cartel los las the verb estar en
*November 21, 2014*

**math**

Your 2pi/7 t is correct. To get the max height of 80 with a radius of 20, you need 20sin(2pi/7t)+60 It could also be a cosine function, or either sine or cosine with a phase shift. Your pure sine function indicates that at t=0, the chair is level with the axle of the wheel.
*November 21, 2014*

**please help**

i posted at 12:00 about math... please help for my son.
*November 21, 2014*

**math**

1/4 + 3/16 + x = 5/8 4/16 + 3/16 + x = 10/16 x = 3/16
*November 21, 2014*

**math**

terrence's brother decided to share some pizza with terrence and his sister. if terrence ate 1/4 of the pizza, his brother ate 3/16 of the pizza, and altogether the three ate 5/8 of the pizza, how much did the sister eat?
*November 21, 2014*

Pages: <<Prev | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | **9** | 10 | 11 | 12 | 13 | 14 | 15 | Next>>