Saturday

August 2, 2014

August 2, 2014

Total # Posts: 201

**Astronomy Question about Neutrinos**

I can't seem to figure this out, I know that neutrinos have nonzero mass but I don't know how that can help me figure this out The mass of a neutrino is zero. equal to the mass of a proton. equal to the mass of an electron. less than the mass of an electron but its act...

**AStronomy/ Math**

Thank you

**AStronomy/ Math**

I do not understand how to do one of my online homework questions: What is the Schwarzschild radius of a 100 million-solar-mass black hole? The mass of the Sun is about 2 × 1030 kg, and the formula for the Schwarzschild radius of a black hole of mass M is: R=2GMc2, where...

**Physics**

A 245 g toy car is placed on a narrow 70-cm-diameter track with wheel grooves that keep the car going in a circle. The 1.0 kg track is free to turn on a frictionless, vertical axis. The spokes have negligible mass. After the car's switch is turned on, it soon reaches a ste...

**Geometry - Area**

Thank You so much Damon!

**Geometry - Area**

Ms. Sue would you be able to help me! I don't want the straight answer i want to actually learn how to solve a question like this!

**Geometry - Area**

Find the area of a regular hexagon with an apothem 10.4 yards long and a side 12 yards long. Round your answer to the nearest tenth.

**math**

Quinn used a scale drawing to build a soccer field near his school. Initially, he wanted the field to be 28 yards long and 17.5 yards wide. He decided to change the length of the field to 36 yards. If the width is to be changed by the same scale factor, what is the new width o...

**Math Help please Check my answer**

You have $59.95 in your wallet and want to buy some new CDs. If the CDs are $11.99 each, what number of CDs, x, can you buy? Write and solve an inequality. My answer: 11.99x ≤ 59.95 11.99x/11.99 ≤ 59.95/11.99 x ≤ 5

**Science**

1. The fossil remains of a ____ were discovered and named Lucy. (1 point) A. Neanderthal B. Cro-Magnon C. prosimian D. hominid 2. Scientists can tell whether organisms are closely related by comparing there ____. (1 point) A. Hair color B. Teeth C. DNA D. Scientific names 3. W...

**math (please help)**

Thank You so much Jai

**math (please help)**

1. Write the equation for the horizontal line that contains point G(-8, 8). 2. What is an equation for the line that passes through points (-1, -4) and (1, 4)? Write the equation in slope-intersect form. 3. Write an equation for the vertical line that contains point E(10, -3).

**math**

1. A skateboard ramp has a 158º entry angle. Find the measure of ∠1. A.) 22º B.) 68º C.) 78º D.) 58º 2. Which of the following equations parallel to the line passing through A(-2, 7);B(-2, -2)? A.) y = -2 B.) y = x C.) 3x = 5 D.) -2x = 7y 3. Whic...

**English**

To me "Taking something to heart" means that whatever he/she had said had meant a lot to me (even if its good or bad). other words to me it's like taking something seriously than what it should be.

**Algerbra**

do you have an Ti - 84? that will work it for you in a faster and reasonable manner.

**Geometry**

1.) A skateboard ramp has a 158° entry angle. Find the measure of ∠1. 2.) Which of the following equations is parallel to the line passing through A(-2, 7);B(-2, -2)? 3.) Which of the following equations would graph a line parallel to 3y = 2x - x + 5? *Please help me!

**chemistry**

Determine whether a solid forms when solutions containing the following salts are mixed. If so, write the ionic equation and the net ionic equation. KCl and Na2S

**Algebra 1**

d is to 4 as 32 is to 56. if answer is a fraction change to decimal

**Algebra 1**

A triangle has a perimeter of 81 inches. The side lengths can be found by x, 3x-1, and 4x+2 what is the value of x?

**Math **

Write an algebraic expression for "55 more than the product of 134 and n"

**Math**

Lindsey has 47 coins in her change purse that are either dimes or quarters. If n represents the number of quarters she has,write an expression in terms of n that describes the number of dimes

**Math**

What is an algebraic expression for "49 more than q"

**earth science**

what are the variables on rocks and minerals

**alegbra 1**

Tell whether each number in the list is a real number, a rational number, an irrational number, an integer, or a whole number. square root 3, 5.5, negative square root of 16,and 0

**PHYSICS**

A woman goes out running. She first travels 5.2km north. She then turns and travels 3.6km west. Finally, she turns again and travels 2.6km south. We are assuming a flat rectangular world. If a bird were to start out from the origin (where the woman starts) and fly directly (in...

**Algebra**

The stopping distance D in feet for a car traveling at x miles per hour is given by d(x)= (1/12)x^2+(11/9)x. Determine the driving speeds that correspond to stopping distances between 300 and 500 feet, inclusive. Round speeds to the nearest mile per hour.

**English**

1. Attention Grabber for Odyssey: 2. State/Explain topic: 3. Thesis Statement: Please help me with this!

**World Geography**

I know what she met, but we don't have a book, it was the voice recorder and it doesn't even say the answers to these.

**World Geography**

Well everything is virtual and we use technology for everything and i am a visual learner not jus someone that listens to something snd learns... It's a quick check.

**World Geography**

But we don't have a book... I'm homeschooled so we don't have books.

**World Geography**

Tbh i need help!

**World Geography**

1.Which of the following demographic characteristics distinguishes Europe's population from that of Asia? A.) More Europeans inhabit rural areas. B.) The European population is much younger. C.) Europeans are more concentration in urban areas. D.) Europe has a larger popul...

**World Geography**

Thank You, Ms.Sue!

**World Geography**

1.B. 2.B. 3.A. 4.C. Are these correct?

**World Geography**

Ms.Sue, is number 5. B ?

**World Geography**

1. During the late 18th and mid-19th centuries, Europeans and North Americans were attracted to nearby coastal waters due to potential economic gains from? A.) Catching trout and cod fish. B.) Catching seals and whales. C.) Shipbuilding. D.) Finding riches and unexplored islan...

**math**

In a class of 50 students, 35 are Democrats, 17 are business majors, and 6 of the business majors are Democrats. If one student is randomly selected from the class, find the probability of choosing a Democrat or a business major.

**chemistry**

If 13.5 ml of concentrated (17.0 M) of sulfuric acid was spilled on the chemistry counter, calculate the mass of sodium bicarbonate needed to neutralize the acid

**AP World History**

I have to analyze how sub-Saharan Africa & south & south-east Asia's relationship to global trade patterns changed from 1850 to present. please help !

**General(dont know actual subject)**

Thts not wat i expected from you. I am sure i chose the right one otherwise i wouldnt tell u. Because tht would literally be wasting my time as well as yours. So from tht u should know i chose the rite one. I dont know which is why i was asking you. What are u supposed to help...

**General(dont know actual subject)**

My project is research based... I chose plastic surgery.... Question is: why have you chosen this task? ( in the box below write a paragraph explaining why you have selected your particualar task idea.) I really cant think of why i chose plastic surgery among all the other one...

**Math trigonometry**

Find the measures of the acute angles of a right triangle whose legs are 9 cm and 16 cm long.

**6th grade math**

Equal 15=15 they are dance same number

**6th grade math**

Equal 15=15 they are dance same number

**6th grade math**

Equal 15=15 they are dance same number

**Educational Assitant**

Say that is his opinion everyone has an opinion

**4th grade math**

If he starts with a white bead every fourth time boommtheres a white head 1_234_5_678_9_ 1, 5, 9

**5th grade math**

Instead of using fractions use quarter I have one dollar and three quarters and 2 dollars and three quarters try this

**5th grade math (word problems)**

For the first question divide 3 in two 25 your answer is the equation subtracted from 25 2nd question=200×20=your answer

**3rd grade language**

1-3 follow ms sue and Joshua but 4 answer=is=state of being

**grammer**

Who is correct

**grammer**

Who is correct

**5th grade math**

what is a word problem for 4.23x10

**Elementary**

edie needs to start from the ones place then subtract the rest of the problem. simple as pie.

**Spelling 4th grade**

Fly is correct jump is wrong

**Spelling 4th grade**

Fly is correct jump is wrong

**chemistry**

Determine whether a solid forms when solutions containing the following salts are mixed. If so, write the ionic equation and the net ionic equation. KCl and Na2S

**Chemistry**

If argon has a volume of 5.0 dm3 and the pressure is .92 atm and the final temperature is 30 degrees celcius and the final volume is 5.7 L and the final pressure is 800 mm Hg, what was the initial temperature of the argon?

**Algebra**

A motorcycle breaks down and the rider has to walk the rest of the way to work. The motorcycle was being driven at 45mi/hr and the rider walks at a speed of 6mi/hr. Teh distance from home to work is 25 miles and the total time for the trip was 2 hours. How far did the motorcyc...

**Angular Speed-Physics**

Stars originate as large bodies of slowly rotating gas. Because of gravity, these clumps of gas slowly decrease in size. What happens to the angular speed of a star as it shrinks? Explain.

**Physics Inertia!**

Rank from fastest to slowest. a)a solid ball rolling down a ramp without slipping b)a cylinder rolling down the same ramp without slipping. c)a block sliding down a firctionless ramp with the same height and slope. Select all that apply. The ball is fastest The cylinder is fas...

**Physics**

An asteroid with mass m = 1.85*10^9 kg comes from deep space, effectively from infinity, and falls toward Earth. How much work would have to be done on the asteroid by friction to slow it to 550 m/s by the time it reached a distance of 1.50*10^8 m from Earth?

**Math (kindergarten)**

18 + 21 = 39 Answer: 39

**physics**

Henry almost had it right.... s=(2+4+4.5)km/ 20min --> convert to m/s: s=10.5km/20min x 1000m/1km x 1min/60s --> 8.75 m/s

**algebra**

A board is leaning against a building so that the top of the board reaches a height of 18 feet. The bottom fo the board is on the groung 4 feet away from the wall. What is the slope of the board as a positive number?

**algebra**

simplify 36/3*4-(-2) ?

**physics**

What is the final speed?

**physics**

Light-rail passenger trains that provide transportation within and between cities are capable of modest accelerations. The magnitude of the maximum acceleration is typically 1.3 {\rm m}/{\rm s}^{2}, but the driver will usually maintain a constant acceleration that is less than...

**chemistry**

Why is it important to list what you already know about a problem ?

**Physics (one more)**

A lead ball has a volume of 94.3 cm3 at 19.3°C. What is the change in volume when its temperature changes to 34.3°C? Someone on here has already answered this but it was wrong!

**PHYSICS please!!!!**

A cube of wood and a cube of concrete, each 0.17 m on a side, are placed side by side. One of the long faces of the rectangular prism formed by the two cubes is held at 17°C, and the opposite long face is held at 32°C. What is the total rate of heat transfer through th...

**physics....**

nevermind I get it

**physics....**

I don't understand why you're multiplying by two for the second question.

**world history/World Geography**

B. Is the correct answer for this question. Source: Took a World Geography with the same question and got a hundred, and the correct answer is B. (Courtnei, A is wrong answer.)

**Humanities**

Is the answer C?

**Astronomy**

Can you please show me how you calculated your answer?

**Astronomy**

The maximum wavelength of emission from Neptune's cloud tops is 6.0 x 10-5m. Using this value, determine the temperature of Neptune's outer atmosphere.

**Physics**

A river is flowing 4.0 m/s to the east. A boater on the south shore plans to reach a dock on the north shore 30.0 Degrees downriver by heading directly across the river. What should be the boat's speed relative to the water?

**Physics**

A river is flowing 4.0 m/s to the east. A boater on the south shore plans to reach a dock on the north shore 30.0 Degrees downriver by heading directly across the river. What should be the boat's speed relative to the water?

**algebra**

if a 12 apple weigh 5lb how much 36 weigh

**Physics**

1. set it up: s=d/t --> s=(2+4+4.5)km/ 20min 2. Convert to meters/ seconds s= 10.5km/20 min x 1000m/km x 1min/60s= 8.75 m/s

**Astronomy**

Thank you for your help!

**Astronomy**

Explain the idea of parallaz. The closet star to the Sun, Proxima Centauri, is 4.2 light years away from us. What is its parallax angle?

**Science**

Okay, say im doing a science fair project, and I am not really good at coming up with questions, what would be a good question to ask about Newtons First Law of Motion

**Astronomy**

If we assume the Sun is made totally out of hydrogen, how many hydrogen atoms are contained with the Sun? If the Sun converts half of these hydrogen atoms into helium over its lifetime of about ten billion years, how many hydrogen atoms are converted per second? Mass of Sun = ...

**Astronomy**

Calculate the wavelength of peak emission for a typical sunspot and compare it to that of the photosphere. How many times brighter is the photosphere than a typical sunspot? (Hint: Assume the photosphere and a sunspot are good blackbodies for these calculations.)

**Physics**

Posted earlier but I wrote it incorrectly. How fast would a rocket have to be going in order to completely leave the solar system? (Assume that the Sun is the only mass in the solar system and that the rocket is beginning its journey from Earth's orbit?)

**Physics**

How fast would a rocket have to be going in order to completely leave the solar system? (For the second part of this problem, assume that the Sun is the only mass in the solar system and that the rocket is beginning its journey from Earth's orbit?)

**Physics**

How fast does a rocket need to be going to break free of Earth's gravity? How fast would it have to be going in order to completely leave the solar system? (For the second part of this problem, assume that the Sun is the only mass in the solar system and that the rocket is...

**Physics**

How fast does a rocket need to be going to break free of Earth's gravity? How fast would it have to be going in order to completely leave the solar system? (For the second part of this problem, assume that the Sun is the only mass in the solar system and that the rocket is...

**science**

what effect does sugar water have on a plant?

**Algebra**

what is incorrect in this argument: the equation 5x + 3 = 3 + 5x isalways true because of the symmetric property of equality

**French**

Please help me unscramble the following words in french: penctoier uernigrsul aceir cuehaebrisnfa arlabtce botromen eercn nealum lstaa

**Physics**

A particle starts from xi = 10 m at t0 = 0 and moves with the velocity graph shown in the graph below. Sorry for no graph it's at 12 m/s when time is zero. Moves down consistently so that it is 8 at 1 4 at 2 0 at 3 and negative 2 at 4. (a) What is the object's position...

**calculus**

In a problem where you have to solve the limit f(x) as x approaches x sub zero, what does x sub zero mean?

**math**

Well 9 times 6 gets 54 and there is 2 left over so the answer is 6 and two-ninths

**Acids and Bases**

NaOH was added to 1.0 L of HI(aq) 0.40 M. Calculate H3O in the solution after the addition of .14 mol of NaOH. Calculate H3O in the solution after the addition of 0.91 mol of NaOH.

**math**

1/6 students like math, 2/3 like reading and 12 like science. How many students were asked.

**Marine Ecology**

what tissue do humans have that cnidarians do not?

**chemistry**

A steel tank containing helium is cooled to 15◦C. If you could look into the tank and see the gas molecules, what would you observe?