Tuesday

January 24, 2017
Total # Posts: 4,409

**sbmjc**

how many moles of methane is required to produce g of co2 after the complete combustion ?

*November 6, 2014*

**Physics**

A large flatbed truck hauls a heavy wood crate as shown. The crate is not tied down and simply rests on the metal bed of the truck. Find the maximum acceleration the truck can have if the crate is not to slide along the truck bed. (Static friction is 0.5 and kinetic friction ...

*November 5, 2014*

**Physics**

The 56 kg man in the roller coaster car is sitting on a bathroom scale. If he is traveling at 40.9 m/s at the point shown and the radius of the vertical coaster track is 87 meters, to the nearest newton what does the scale read? What is the answer to the previous problem if ...

*November 2, 2014*

**Chemistry**

Find the mass of each of the following: (a) 5.52 L O2 at 1.89 atm and 250.0 K (b) 3.43 L NH3 at 0.911 atm and 27°C (c) 117 mL SO2 at 0.823 atm and -53°C

*November 2, 2014*

**chemistry**

Thanks

*November 2, 2014*

**chemistry**

What is the eq.wt of C7H6O3 and why ??😊

*November 2, 2014*

**Chemistry**

A sample of oxygen that occupies 1.00 x 10^6 mL at 575 mm Hg is subjected to a pressure of 1.20 atm. What will the final volume of the sample be if the temperature is held constant?

*November 2, 2014*

**chemistry**

What is the eq.wt of C7H6O3 and why ??😊

*November 2, 2014*

**chemical**

Ican't found the answer

*November 2, 2014*

**chemical**

What the eq.wt of C7H6O3 and why?

*November 2, 2014*

**Calculus**

A right circular cylinder is changing shape. The radius is decreasing at the rate of 2 inches/second while its height is increasing at the rate of 5 inches/second. When the radius is 4 inches and the height is 6 inches, how fast is the a) volume changing (V=(pi)r^2h) b) ...

*November 2, 2014*

**chemestry**

consider the reaction 2N2O(g) == O2(g)+2N2(g).which of the following will cause a shift in the equilibrium to the left?

*November 1, 2014*

**Width of a square**

A rectangle has an area of 45 square centimeters and a length of 10 centimeters. What is the width of the rectangle? 55 centimeters 35 centimeters 4.5 centimeters 3.5 centimeters (my answer)

*October 31, 2014*

**Sociology**

About how many cases of Elderly abuse are reported? 1) 1of 5 2)1 of 8 3)1 of 10 4)1 of 14

*October 30, 2014*

**Socioloy**

Cassie is a 15 year runaway who is assaulted. Which victimization theory would best apply to her stituation? 1)Victim precipitation 1)Lifestyle Theory 3)Deviant place Theory 4)Routine activities Theory

*October 30, 2014*

**Modern law**

how is modern law and government have been influenced by classical Greece and Rome

*October 28, 2014*

**AP Chemistry**

Thank You! Great Explanation!

*October 28, 2014*

**AP Chemistry**

if the energy to break bonds is greater than the energy to form the bonds, is it exothermic?

*October 28, 2014*

**can someone please help me with sign language**

what do you need help with

*October 27, 2014*

**Health**

The Muscle mass belongs to the posterior group.

*October 27, 2014*

**physics**

A beam of particles is directed at a 0.016-kg tumor. There are 2.1 x 1010 particles per second reaching the tumor, and the energy of each particle is 5.4 MeV. The RBE for the radiation is 14. Find the biologically equivalent dose given to the tumor in 16 s.

*October 27, 2014*

**physics**

A 20 g fridge magnet is being held onto the fridge by a 0.9 N force. coefficient of kinetic friction is 0.3 . a. calculate the friction acting on the magnet. b. calculate the weight of the magnet c.the acceleration of the magnet. also, explain the situation, cause i don't ...

*October 25, 2014*

**Thesis statement**

Because it makes families closer

*October 24, 2014*

**Thesis statement**

i'm talking about why family relationships are important

*October 24, 2014*

**Thesis statement**

I need help writing a thesis statement about family relationships

*October 24, 2014*

**math**

You are the financial planner for Johnson Controls. Assume last year’s profits were $760,000. The board of directors decided to forgo dividends to stockholders and retire high-interest outstanding bonds that were issued 5 years ago at a face value of $1,420,000. You have ...

*October 23, 2014*

**please help**

Choose the answer that identifies the nominative case pronouns. I, you, he, she, it, us, you, they I, you, he, she, it, we, you, they I, you, he, she, it, we, you, them I, you, he, she, its, we, you, they # 3 is the answer?

*October 23, 2014*

**Grammar**

1. Choose the answer that identifies the three cases of pronouns. nominative, objective, possessive nominative, antecedent, objective objective, possessive, prepositional objective, indefinite, possessive**** My answer

*October 23, 2014*

**physical science**

calculate the force output by the larger piston of a hydraulic lift when a force of 700 newtons is excerted on the smaller piston and the areas of the two pistons are 20cm and 950cm squared.

*October 21, 2014*

**math**

A golf cart has either 3 or 4 wheels. John checked all 25. How many 3 wheeled how many 4 wheeled

*October 21, 2014*

**physic**

A ball is thrown toward a cliff of height h with a speed of 28m/s and an angle of 60∘ above horizontal. It lands on the edge of the cliff 3.3s later. a) How high is the cliff? i got 26.7 m b) What was the maximum height of the ball? my answer here was 30 m C) What is the...

*October 21, 2014*

**Perimeter and Area**

The set of points (2, 3), (9, 3), (9, 2), and (2, 2) identifies the vertices of a quadrilateral. Which is the most specific description to tell which figure the points form? parallelogram square rectangle trapezoid

*October 21, 2014*

**physic**

Thanks Damon, I realized that I forgot to multiply my velocity by time (3.3). I tried to do the next part but my answer is not right. can you double check this? c) What is the ball's impact speed? I found fall time 3.3-2.47=0.83s then I used this formula V1=V0+gt = 0+9.80*...

*October 21, 2014*

**physic**

A ball is thrown toward a cliff of height h with a speed of 28m/s and an angle of 60∘ above horizontal. It lands on the edge of the cliff 3.3s later. a) How high is the cliff? i got -29.2 m but my answer is wrong b) What was the maximum height of the ball? im not sure ...

*October 21, 2014*

**math**

I labeled a clock, dice, and straight line A,B,C,D and with the chart below them it says to use those points to label and name representations of each of the following table: ray, line, line segment, and angle. Extend segments to show lines and rays. Need help because I'm ...

*October 21, 2014*

**statistics**

Use the z-table to find the requested probabilities. Enter your answers to 4 decimal places. (a) P(z < −1.02) = Incorrect: Your answer is incorrect. (b) P(z ≥ 2.43) = (c) P(−1.80 < z < 1.36) =

*October 20, 2014*

**statistics**

Assume heights and weights are normally distributed with the given means and standard deviations from the table below. Strata Mean Standard Deviation Mean Standard Deviation Height Height Weight Weight (inches) (inches) (pounds) (pounds) U.S. Men 69.3 2.8 191 28 U.S. Women 64....

*October 20, 2014*

**statistics**

The bass in Clear Lake have weights that are normally distributed with a mean of 1.9 pounds and a standard deviation of 0.8 pounds. (a) If you catch 3 random bass from Clear Lake, find the probability that the mean weight is less than 1.0 pound. Round your answer to 4 decimal ...

*October 20, 2014*

**statistics**

Potatoes - Samples: Assume the weights of Farmer Carl's potatoes are normally distributed with a mean of 8.0 ounces and a standard deviation of 1.3 ounces. He bags his potatoes in groups of 6. You buy a bag and the total weight is 42 ounces. Here we determine how lucky or ...

*October 20, 2014*

**AP Chemistry**

What is the change of enthalpy associated with the combustion of one mole of pentane? C5H12 + 8O2 ¨ 5CO2 + 6H2O I'm very confused, Please help!

*October 19, 2014*

**math**

How to solve for t 2465=204.8t+4.6t^2

*October 19, 2014*

**physics**

Traveling at a speed of 12.1 m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. The coefficient of kinetic friction between the tires and the road is 0.740. What is the speed of the automobile after 1.42 s have elapsed? Ignore the effects of ...

*October 18, 2014*

**chemistry**

which of the following is consistent with the line spectrum of the hydrogen atom? one of the choices is the nucleus is udnergoing gamma decay. but this si not one of the answers. Im just wondering what kind of decay happens?

*October 18, 2014*

**research help**

I need help with some research topics for a paper?

*October 17, 2014*

**Biology**

how does a change in the sequence of nucleotides in a strand of DNA might cause a protein to malfunction.

*October 16, 2014*

**Biology Help**

how does the structure of a cellulose molecule relates to the molecule’s function?

*October 16, 2014*

**math**

Ralph bought 4 books for k dollars each. Iris bought 5 books for k dollars each. If together they spend 90 dollars, how much is each book? 4k+5k=90 so 9k=90 90/9=10 so $10 each

*October 16, 2014*

**math**

Rhonda bakes p pies. Mary bakes 3p pies. If together they bake 20 pies, how many pies does Mary bake?Rhonda bakes p pies. Mary bakes 3p pies. If together they bake 20 pies, how many pies does Mary bake? I would've thought p+3=20 so 20-3=17 making it p=17 but not sure that ...

*October 16, 2014*

**math**

solve this equation a divided into 7=20 the actual problem has the divide sign. I got a=20*7 so a=140

*October 16, 2014*

**math**

solve this equation a divided into 7=20 the actual problem has the divide sign. I got a=20*7 so a=140

*October 15, 2014*

**physics**

Alice ((7.500x10^1) kg) and Bob ((8.5x10^1) kg) are standing at rest on friction free ice. Alice pushes Bob causing Bob to accelerate at (2.300x10^0) m/s^2. What is the magnitude of Alice’s acceleration?

*October 15, 2014*

**physics**

A (1.35x10^2) kg box is falling near Earth’s surface. It is accelerating at (7.3000x10^0) m/s^2 [D]. What is the force of air resistance on the box?

*October 15, 2014*

**vocabulary help**

When the realtor realized that there was a large dent in the floor, he tried to __________ cover it before the potential buyers noticed it. flagrantly ostensibly (my answer) surreptitiously latently Choose the word that best completes the sentence. After traffic made them late...

*October 15, 2014*

**Check my answers**

Question 1.Choose the answer that identifies the case of the parentheses word. My grandparents always go to the square dances with the Warrens and (them). nominative objective possessive *** my answer none of the above Question 2. Choose the pronoun that best completes the ...

*October 15, 2014*

**math**

Manuel painted 4 houses over the summer. John painted x houses. Patrick painted 2 houses. They painted 9 houses in all. How many houses did John paint? Not sure if it's x-(4+2)=9 or is it x+(4+2)=9

*October 15, 2014*

**math**

Max has 5 more than twice as many cookies as Chris. Write an expression that shows the number of cookies Max has if Chris has c cookies. 5+2x=c Not sure please help.

*October 15, 2014*

**math**

5 less than three times the number of chipmunks. We got 3x-5 but weren't sure.

*October 14, 2014*

**phys**

An electron of kinetic energy 50 keV moves in a circular orbit perpendicular to a magnetic field of 0.405 T. Find the radius of the orbit. I tried using KE=mv^2/2 to find velocity. then using qBv=(mv^2)/r to solve for r. but my answer was wrong. I am pretty sure this is the ...

*October 14, 2014*

**Perimeter and Area**

Which best describes the polygon whose vertices in the coordinate plane are (2, 3), (2, 3), (2, 1), (2, 1)? only equilateral only equiangular regular none of these

*October 14, 2014*

**Perimeter and Area**

Which best describes the polygon whose vertices in the coordinate plane are (5, 5), (0, 5), (0, 0), (5, 0)? only equilateral only equiangular regular none of these

*October 14, 2014*

**Lasting Influences**

i chose history but i'm having trouble explaining it

*October 14, 2014*

**Lasting Influences**

What of these Greek achievements was the most contribution to greek culture and explain. Military strategy Art and architecture Literature Drama History Philosophy Government

*October 14, 2014*

**please check my english**

WRONG! It's D, B, D, B, D, A, D

*October 13, 2014*

**Next Big Trend?**

what are two trends that can be expected to see in American stores next year?

*October 13, 2014*

**Algebra help**

Given f(x) = 5x 1. What is f(2)? is it 9?

*October 13, 2014*

**Business Math**

Andres Michael bought a new boat. He took out a loan for $23,980 at 3.75% interest for 4 years. He made a $4,470 partial payment at 4 months and another partial payment of $3,180 at 9 months. How much is due at maturity?

*October 10, 2014*

**business math**

Andres Michael bought a new boat. He took out a loan for $23,980 at 3.75% interest for 4 years. He made a $4,470 partial payment at 4 months and another partial payment of $3,180 at 9 months. How much is due at maturity?

*October 10, 2014*

**physics**

An astronaut is traveling in a space vehicle moving at 0.520c relative to the Earth. The astronaut measures her pulse rate at 74.0 beats per minute. Signals generated by the astronaut's pulse are radioed to the Earth when the vehicle is moving in a direction perpendicular...

*October 10, 2014*

**math**

13 2/5 - 4 1/5 = 9 1/5

*October 10, 2014*

**math**

Yeah, you could of used a calculator, it would save a lot of time

*October 10, 2014*

**stats**

Suppose that f(x) = 1:5x2 for -1 < x < 1 (0 elsewhere). Determine the following probabilities: (a) P(X > 0) (b) P(X > 0:5) (c) P(-0.5 < X </= 0.5) (f) Determine x such that P(X > x) = 0.05 (g) Find the cdf of X. could someone just get me started...

*October 8, 2014*

**algebra**

What is the solution to the linear system of equations? x + 4y = 8 x y = 7 (4, 3) (4, 3) (7, 0) The system has no solution.

*October 8, 2014*

**math help**

What is the solution to the linear system of equations? x + 4y = 8 x y = 7 (4, 3) (4, 3) (7, 0) The system has no solution.

*October 8, 2014*

**math help**

Given f(x) = x 10. What is f(7) i think its -10

*October 8, 2014*

**help plz**

Which relation is a function? {(5, 1), (4, 9), (6, 10)} {(0, 3), (0, 9), (12, 4)} {(5, 5), (5, 9), (5, 15)} {2, 10), (6, 10), (2, 3)} the third one?

*October 7, 2014*

**math help**

I think the answer is:Domain: {4, 0, 8}; Range: {2, 1, 5, 10}

*October 7, 2014*

**math help**

What are the domain and range of the relation {(4, 2), (0, 1), (0, 5), (8, 10)}?

*October 7, 2014*

**Sewing and Technology**

What color should the thread on the bobbin be? a color that complements the thread spool a darker color than the thread spool a color that contrasts with the thread spool the same color as the thread spool number2?

*October 6, 2014*

**Sewing and Technology**

Basting stitches would be best used for which of the following purposes? delicate beadwork temporarily holding fabric adding an appliqué creating a hem I think its the 3rd one?

*October 6, 2014*

**Sewing and Technology**

i think its the first one?

*October 6, 2014*

**Sewing and Technology**

foot pedal bobbin thread guide needle

*October 6, 2014*

**Sewing and Technology**

The speed at which the machine sews is controlled by the

*October 6, 2014*

**Sewing and Technology**

Television design shows can be a good source for designers. true or false

*October 6, 2014*

**Sewing and Technology**

Which of the following represents the correct formula for calculating the amount of fabric needed to make a curtain? A. length x width) + seam allowance B. (length x seam allowance) + width C. (length + seam allowance) x (width + seam allowance) D.(seam allowance x 2) + (...

*October 6, 2014*

**English**

Him is the correct one.

*October 6, 2014*

**math**

At noon, ship A is 20 nautical miles due west of ship B. Ship A is sailing west at 24 knots and ship B is sailing north at 25 knots. How fast (in knots) is the distance between the ships changing at 5 PM? I have tried multiple times but keep getting confused.

*October 5, 2014*

**Analytic Geometry CHECK MY ANSWER**

What is the slope of the line that passes through the points (2, 3) and (2, 6)? Option A: -3/2 Option B: -3/4 (MY ANSWER) Option C: 3/4 Option D: 0

*October 3, 2014*

**Analytic Geometry CHECK MY ANSWER**

A neighborhood swim club charges a one-time fee of $25 to join and $85 each month. If n is the number of months of membership and t is the total amount spent, then the variables are related by the equation t = 85n 25. Which variable is the independent variable? A.t B.n C. ...

*October 3, 2014*

**math**

f(x, y) = 3y cos x, 0 ¡Ü x ¡Ü 2¦Ð what is the saddle point for this?

*October 2, 2014*

**organic compounds**

Discuss the types of trace elements in organic compounds.

*October 1, 2014*

**slopes**

thanks :)

*October 1, 2014*

**slopes**

what is the slope of the line (4,9) and (2,9)?

*October 1, 2014*

**physics**

A cannon is fired horizontally from a platform . The platform rests on a flat, icy, frictionless surface. Just after the shell is fired and while it is moving through the barrel of the gun, the shell (mass 3.2 kg) has an acceleration of 12500 m/s2. At the same time, the cannon...

*September 30, 2014*

**Threading a machine**

How do you thread a sewing machine?

*September 30, 2014*

**Good Neighbor Day**

What are some ways you can be a good neighbor?

*September 30, 2014*

**stats and prob**

Consider a sequence of independent Bernoulli trials with p= 0.2 a) what is the expected number of trials to obtain the first success? for this I thought of it as geometric so 5 trials b) after the eighth success occurs, what is the expected number of trials to obtain the ninth...

*September 30, 2014*

**chemistry**

i got 6.667. what does this mean?

*September 27, 2014*

**chemistry**

an electron in n=5 emits 4052 nm to what energy level does the electron move

*September 27, 2014*

**physics**

In a TV set, an electron beam moves with horizontal velocity of 2.5 × 107 m/s across the cathode ray tube and strikes the screen, 44 cm away. The acceleration of gravity is 9.8 m/s2 . How far does the electron beam fall while traversing this distance? Answer in units of m

*September 27, 2014*

**chem**

The electron in a ground state H atom absorbs a photon of wavelength 121.57nm, to what energy level does the electron move?

*September 27, 2014*