# Posts by james

Total # Posts: 2,479

CHEMISTRY
What is the [H+] in a 0.10 M solution of ascorbic acid,C6H8O6?

Physics
A ball is thrown from a building standing 30m high, landing 10m away from the building 3.2 seconds after it was thrown. Find the angle above the horizontal and the initial velocity of the ball

math
If 3feet*50metre is Rs.8720,how much would 2feet*40metre cost?

math
How much money should be invested today in order to have \$100,000 in an account after 40 years if the rate is 6.8% compounded quarterly?

algebra 2
Jennifer invested \$2,500 in an account earning 3.5% interest compounded continuosly. How much money will she have in the account after 15 years?

math
A ramp that is 4 ft., 3 ft.at one end. I want a 30% slope to the ground; how long should the ramp be?

pre-calc help
cos^2(x/2)-sin^2(x/2) 2sin(x/2)cos(x/2)

lOTS OF PHYSICS :)
41. Is the speed of light constant as it passes through transparent materials? Yes, the speed of is always constant No, light travels at different speeds through different materials 42. A lens that causes light to diverge is A converging lens A diverging lens Fish-eye lens 43...

pHYSICS hELP rATIONAL SPEEDS OF DISKS
If rotational speed of a disc remains constant, what happens to the speed of a point on the disc if its distance from the axis is doubled? It stays the same It also doubles It triples It quadruples

physics
A projectile is launched at an angle of 600. What other angle would give the same range for the projectile if we neglect air resistance?

Physics
A ferryboat traveling at a speed of 30 km/h attempts to cross a river with a current of 5 km/h. What is the boat's speed relative to the shore? 8 km/h 25 km/h 30.4 km/h 32.8 km/h

anatomy and physiology
what lifestyle factors of the muscle affect the growth, development, size and/or healing (positively or negatively) of the tissue?

anatomy and physiololgy
what lifestyle factors of the bone affect the growth, development, size and/or healing (positively or negatively) of the tissue.

science
A 1.4 kg ball and a 3.0 kg ball are connected by a 1.0 m long rigid, massless rod. The rod is rotating cw about its center of mass at 24 rpm. What torque will bring the balls to a halt in 4.2 s?

English
Dennis moisture

English (Comma Question)
I think the first sentence is correct.

English (Comma Question)
Which of the following sentences is correct? "James arrives and, after a period of confusion, Mary's secret is revealed." "James arrives, and after a period of confusion, Mary's secret is revealed." "James arrives and after a period of ...

A truck rental company charges \$20 plus 9 cents per mile.Joe's friend offers to rent Joe his truck for \$35 and won't charge him mileage. What is the minimum number of miles Joe has to drive to save money using his friend's truck? 17?, 55?, 121? or 167?

Finance
A grocery store manager must decide whether to buy four rug cleaners to rent to customers. The manager estimates that the first would yield \$200 a year, the second \$150, the third \$75, and the fourth \$20. If the interest rate is 12 percent and each rug cleaner costs \$500, how ...

geometry
easy simply 286x2= whatever than do 63x4= whatever your thanks ( come from canada just joking ) your welcome :-)

chemistry
What would the final freezing point of water be if 3 mol of sugar were added to 1 kg of water (Kf = 1.86C/(mol/kg) for water and i = 1 for sugar)?

physics
The system in the Figure is in equilibrium. A mass M1 = 242.0 kg hangs from the end of a uniform strut which is held at an angle theta = 41.0o with respect to the horizontal. The cable supporting the strut is at angle alpha = 27.0o with respect to the horizontal. The strut has...

physics
The weightless horizontal bar in the figure below is in equilibrium. Scale B reads 4.00 kg (N.B. as you know, the scale should read N, but no one told the manufacturer). The distances in the figure (which is not to scale) are: D1 = 9.0 cm, D2 = 8.0 cm, and D3 = 6.5 cm. The ...

math
Jane needs to fill her pool with water. Ace said it will take them 40 minutes to fill the pool. Ben said it will take them 60 minutes to fill the pool. How long it will take for both Ace and Ben to fill the pool at the same time?

chemistry
16.67ml

Math
Based on the data, of 40% Reading and 25% Math, Out of 240 students, how many would choose reading or math as their favorite subject?

geometry
27

Chemistry
The Energy from glucose is obtained from the oxidation reaction C6H12O6 + 6O2 --> 6CO2 + 6H2O How would a similar reaction look for Sucrose? I am trying to find an equation about how the body uses a compound, in this case sucrose. I'm just not sure how different that ...

Physics
0.17meter

math
If (x – 3) divides evenly into x3 – x2 – kx + k, find k. (2 marks)

math
Complete the square to find the vertex of each quadratic function. State the vertex. (10 marks) A) f(x) = x2 + 8x – 3 B) f(x) = x2 – 5x + 8 C) f(x) = 2x2 – 12x + 1 D) f(x) = 3x2 + 2x – 5

math
Determine the remainder of the following polynomial divisions: (2 marks) A) (4x4 + 3x2 - x + 3) ÷ (x + 1) B) (3x2 + 2x - 7) ÷ (2x - 1)

math
Solve for x in the following equations. (4 marks) log3(x - 5) + log3(x + 3) = 2 <--- both log3.. 3 is subscript log7x + log7(x - 1) = log72x <--- all log7.. 7 is subscript.

math
log(27) / log(1/3) log(3^3) / log(3^-1) 3 log(3)/-1 log(3) -3

math
a) Log2(x^2 – 9/x^3)^3 <----- log2 2 is subscript. b)loga 5a^4 <---- loga a is subscript.

math
On the outside of what kind of triangle? right triangle or what? If you copy and paste the picture it might help or go more in depth with details please. Is that the entire question? Help me help you hahaha

math
I want to help but i feel as though i don't have all the info i need. Are angle 1 and 3 perpenticular or suppose to be similar or on the inside of a triangle?

math
Is this about a triangle or what?

Chemistry (buffers)
Say, for example, that you had prepared a Buffer C, in which you mixed 8.203 g of sodium acetate, NaC2H3O2, with 100.0 mL of 1.0 M acetic acid. a. What would be the initial pH of Buffer C? HOW???????

math
Write the expression as a logarithm of a single quantity. (4marks) A)3log5a + 4log5b - 2log5c B)3log2 -1/3log(x^2-1)

math
Find the value of each of the following. Leave your answers as fractions where appropriate. Do not change bases. a) log4 (1/8) B)10^(-10log3)<---superscript in brackets c.2log3<-----subscript.9 d.log3<---subscript.3^2x

maths
In slope intercept form as you increase one value of S, T increases by two so the formula can be T=2S+5

math
The length of time that it takes for a pendulum to make one complete swing depends on the length of the pendulum. The time in seconds, T, is related to the length in metres, L, through the equation T=2π√ L/9.8 State the domain and range of this function. (1 mark) ...

math
The length of time that it takes for a pendulum to make one complete swing depends on the length of the pendulum. The time in seconds, T, is related to the length in metres, L, through the equation T=2π√ L/9.8 Write this equation in function notation. (1 mark) State...

Calculus; Limits
The percentage of research articles in a prominent journal written by researchers in the United States can be modeled by A(t) = 26 + (36/1 + 0.8(0.8)^−t'), where t is time in years (t = 0 represents 1983). Numerically estimate lim as t→+infinity A(t). I ...

Math
This problem pertains to Cuisenaire Rods: 1-white 2-red 3-green 4-purple 5-yellow 6-dark green 7-black 8-brown 9-blue 10-orange Question: (a) If an all-brown train is equal in length to an all-orange train, what can be said about the number of brown rods compared to the number...

Networking
I wanted to know if the MAC address is needed to be changed and does the ip address need to change if I move my computer from my home and into my office at work which are not on the same network?

Chemistry
I'm not sure what it's asking. I know I need to write out the aqueous parts and write the charges, but I don't how to do that. Mostly I need help getting it to the Gross Equation.

Chemistry
Yep

Chemistry
Write the Gross and Net Ionic Equations for the following Reactions: LiNO3(aq)+(NH4)3N(aq) => Li3N(s)+ NH4NO3(aq) Al(s)+CuCl2(aq) => AlCl3(aq)+Cu(s)

Physis
A bullet of mass of 30g and travelling at a speed of 200msˉ¹ embeds itself in a wooden block. The bullet penetrates a distance of 12cm into the wood. Using the concepts of work done by a force and kinetic energy, determine the average resistive force acting on the ...

they changed the answers on penn foster

how do you write a fraction as a decimal?

i got it now thanks. its 55/100 12/100 60/100 5/10 75/100

.25 .75 .3 .5 .40 .60 .08 .12 .55 those are the ones I need help on

i still don't geit

how do you write a fraction for a decimal?

science
A 5kg object is resting on top of a 30m building. How much energy does the object have?

Chemistry
I can't figure out a clear way to write out the formatting of the question, but here is a picture. Any help is greatly appreciated. the image is on the website imggur and then then after imgur dot com its /Cus8o

Chemistry
The following reaction exhibits the rate law: Rate = k[NO2]^2[Cl2]. 2NO(g)+Cl2(g)---->2NOCl (g) (a) Explain why the following mechanism is not plausible for this reaction. Fast: NO + Cl2<-->NOCl + Cl Slow: NO + Cl---->NOCl (b) Propose a two-step mechanism involving...

Microbiology
What if you found gas in the Lab tubes but none in the BGLB thow does this affect the EC test

math
a textbook has 50 more than two times the number of pages as a workbook. combined, they have 230 pages. how many pages are in the textbook?

geometry
a ladder is placed against the side of a building at an angle of 50 degree. the ladder's base is 10ft away from the base of the building. How long is the ladder?

Physics
A spring is mounted horizontally. A crate which has a mass of 8.5kg is pressed against the spring with a force of 350N. As a result the spring is compressed a distance of 82.0cm. The mass is then released and is allowed to slide along the horizontal, frictionless surface. What...

math
Gemma is making necklaces. She needs 10 beads for each one. She has 64 beads altogether. how many necklaces can she make?

physics work and energy
A mass of 45kg is sitting at the bottom of an incline plane which is 5.5m long has a coefficient of friction of .65 and which meets the horizontal at an angle of 32deg. A force of 812N is applied to the mass so as to accelerate the mass up the inclined plane. What will be the ...

THERMOCHEMISTRY
An ice hotel that is made of 410 metric tons of ice and 12200 metric tons of snow is being melted. The company is going to siphon the melted water into nearby streams. The company is using large industrial sized acethylene to do the job. Your job is to order the rigth amount ...

calculus
A 33 by 33 square piece of cardboard is to be made into a box by cutting out equal square corners from each side of the square. What size corners should be cut out so that the volume of the box is maximized?

Chemistry
Ok thank-you anyway. I appreciate it.

Chemistry
Look up the solubility of NaCl in both water and ethanol (in the CRC handbook of chemistry which i don't have access to, and any help would be appreciated) Consider the dissolution process, and competing intermolecular forces to account for the observed differences in ...

Chemistry
Look up the solubility of NaCl in both water and ethanol (in the CRC handbook of chemistry which i don't have access to, and any help would be appreciated) Consider the dissolution process, and competing intermolecular forces to account for the observed differences in ...

Chemistry
Acetic acid is a polar molecule and can form hydrogen bonds with water molecules. Therefore, it has high solubility in water. Yet acetic acid is also soluble in benzene (C6H6), a nonpolar solvent that lacks the ability to form hydrogen bonds. A solution of 3.8g of CH3COOH in ...

Chemistry
Hydrogen gas dissolves in palladium with the hydrogen molecules going into the spaces between the metal ions. Determine the molarity, molality, and percent by mass of the H2:Pd solution (d=10.8g/cm)containing 0.94g hydrogen gas dissolved in 215 grams of palladium metal.

Chemistry
THANK YOU!

Chemistry
I am lost about where to start on this. "The idea comes to mind to put some hot rocks in your frozen bath water. What mass of rocks at 220 degrees Celsius needs to be added to 500.0L of frozen bath water at 0 degrees celsius to raise its temperature to 55 degrees celsius...

math
The length of time that it takes for a pendulum to make one complete swing depends on the length of the pendulum. The time in seconds, T, is related to the length in metres, L, through the equation T=2π√ L/9.8

math
A student was given the function f(x) = x2 and asked to write the result of translating this function 1 unit to the left. The student wrote the following: g(x) = (x+1)2. Is this statement correct? Explain.

math
my x and y are in ml not liters..

math
??I got this when I followed steve's steps... optimal solution: c=191/23; x=2750/23; y=3000/23; z=0

AP English Literature
Thank you so much. I really appreciate it.

AP English Literature
E) synecdoche is that the correct answer?

AP English Literature
Can someone please help me? In Jane Eyre in chapter 1 with the quote, "every nerve I had feared him; and every morsel of flesh on my bones shrank when he came near," all the literary devices illustrate all of the following EXCEPT A) parallelism, B) hyperbole C) ...

AP English Literature
"every nerve I had feared him; and every morsel of flesh on my bones shrank when he came near," uses all of the literary devices EXCEPT A) parallelism, B) hyperbole, C) paradox, D) personification, E) synecdoche

MATH
If 2 angles are adjacent, can it also be said they form a linear pair? Why?

physics
If the magnitude of the electric field in air exceeds roughly 3 106 N/C, the air breaks down and a spark forms. For a two-disk capacitor of radius 49 cm with a gap of 1 mm, what is the maximum charge (plus and minus) that can be placed on the disks without a spark forming (...

physics
a spherical gaussian surface of rdius R surrounds a point charge of magnitude +Q. How does the flux through the spherical surface change if the sign of the charge is reversed and the Gaussian sphere is doubled?

GEOMETRY
Is it true that vertical angles must be oriented north-south?

math
john brought a new aquarium. How many gallons of water will john need to fill the tank three quarters of the way full? the tank is 12 inches tall and 19.25 long [1 gallon = 231 cubic inches] the tank is square

chemistry
How many electrons are in the highest occupied energy level of these atoms? Na(sodium) Al (aluminum) F(fluorine) C(carbon)

Physics
if the tangential speed of a ball is 1.2874 . what is the centripetal force ? If the maximum tension the rope can withstand before breaking is 159.9 N, what is the maximum tangential speed the ball can have? Answer in units of m/s

BIOLOGY
Predict which would diffuse faster, briefly explain why. a. Methylene blue or KMnO4 with the same concentration b. 1.0M vs 0.1 M methylene blue solution c. KMnO4 at 0oC and 100oC

Geometry
If x<15, then 5x <75 name the property of inequality

Physics
A hot-air balloon is rising upward with a constant speed of 2.50 m/s. When the balloon is 3.00 m above the ground, the balloonist accidentally drops a compass over the side of the balloon. How much time elapses before the compass hits the ground?

Math- Algebra
Write the expression in math symbols: the sum of m squared and 8

General Physics Pt.2
A current loop with radius 20 cm and current 2 A is in a uniform magnetic field of 0.5 T. Considering all possible orientations of the loop relative to the field, what is the largest potential energy difference (in Joules) you can find between two orientations?

prealgebra
between which w consecutive numbers would you find the square root of 82

Trigonometry
Find the remaining trigonometric ratios of θ if sin(θ) is given and θ QI sin(θ)=7/sqrt 149 cos= tan= cot= csc= sec=

physics
How much power is required to do 110 J of work on an object in a time of 0.4 s? W How much power is required if the same work is done in 5 s? W

Science
Assuming energy is conserved, gravitational potential energy and kinetic energy 'swap' during a fall, and the numeric values transfer. I would say the answer is 180 - 135 = 45J Kinetic energy = 45J

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