Posts by Ben

Total # Posts: 1,023

Chemistry
A flask of hydrogen gas is collected at 1.023 atm and 35 degrees C by displacement of water at 35 degrees C is 42.2 mm Hg. What is the partial pressure of hydrogen gas in the flask? Not exactly sure where to start with this question, or what formula to use. Thanks in advance

Differential equation (urgent pls!!!)
Reduce the differential equation below to an exact equation (X - 2siny + 3)dx -(4siny - 2x + 3)dy=0. The problem here is how to solve for the integrating factor...any help pls?

maths(Differential Equation)
Solve the differential equation below (Y + y^3/3 + x^2/2)dx + 1/4(1 + y^2)xdy=0

Accelerated algebra
Comet C has an elliptical orbit of eccentricity 0.9638 with the sun at one focus. The greatest distance of the comet from the sun is 2940 million miles. Find the least distance between the comet C and the sun.

Physics
Electrons in a narrow beam travelling at a steady speed of 5 x 10^7 ms^-1 are directed into the space between two oppositely charged parallel plates 50mm apart. The potential difference between the plates is 2500V. The initial direction of the beam is parallel to the plates. ...

Physics - Electrons (Inside the atom)
Thank you

Physics - Electrons (Inside the atom)
A beam of electrons is directed into uniform electric and magnetic feilds that are at right angles to one another and to the beam direction. The strength of the magnetic feild is 55 mT; the electric feild strength is adjusted to 600 kV m^-1 when the beam passed through the ...

Calculus
Find the area of the region bounded by the graphs of y = x, y = 6 - 2x, and y = 0. (4 points) 3 6 9 None of these Please help I don't know how to do this

Algebra
(60/x)x66=400

Science (Physics)
A ball is projected horizontally from the top a hill with a velocity f 30mls. If it reaches the ground 5seconds later, the height of the hill is?

Science (Physics)
A ball is projected horizontally from the top a hill with a velocity of 30mls. If it reaches the ground 5seconds later, the height of the hill is?

Art
joana was right i used them also got 100

Math Literacy
How would I explain that in the form of a paragraph.

STAT
0.2

College physics
a person drives northward (90 degrees) at 15m/s in a truck that weighs 2500kg. a second person driving a car that weighs 1600 kg drives southwest (225 degrees) at 16 m/s. They have a perfectly inelastic collision. What is the direction and speed of the two vehicles immediately...

math 5th grade
Never mind

math 5th grade
I disagree. It says 3/10 of the remaining. so it equals .36 pounds. I got .84 as an answer

science
a horizontal beam 6.8m long of mass 15kg is supported by pillars of 0.2 of each end. There is a man of mass 85 kg standing 1.7kg from one end of the beam .draw a diagram showing the forces acting on the beam in this equilibrium condition .calculate the magnitudes of the loads...

World history
Thank you

World history
What influenced the scientific revolution?

math
THANK YOU!!

math
The discounted price of a book is 85% of the original price. This is a savings of $3. A sales tax of 8% will be added to the discounted price. What is the original price? the discounted price? and the tax?

Language
idk is correct thank you

English
What was the answers?

English Check please
what were these answers?

Math
4x(x-2)=(2x+1)(2x-3) need help to solve

prasanna high school
Maths quection inam A.P. The sum of first six terms is 6an the product of second term and fifth term is -80. Find the terms of A.P.

4
Bobby has 230 marbles to put in jars. He wants the jars to hold either 100 marbles or 10 marbles. Which is a way he can arrange the marbles?

Math Help- Test Tomorrow!
We were doing review in class today and I remembered this one question I never got(though I don't have the specific question with me anymore). 1. It was a composite function question that asked for 'a' when f(g(a))=1. We were provided with the graphs of f(x) and g(...

Math
The function f(x)=x^2+5x+6 has zeros at -2 and -3. What are the zeros of the function y=-2f(x/11) ? Do you just plug x/11 into each x value in f(x)? Like f(x)= (x/11)^2+5(x/11)+6 (I exclueded the -2 because if I divide 0 by -2, it's still zero)? But then how can you find ...

discrete math
sorry its proof by cases

discrete math
4m+5n^2=20 (proof by cares)

Science
On a 120 km trip a motorist travels 60 km at 60 km/h. How fast must the motorist go for the next 60km in order to average 120km/h for the whole trip? i have attempted this question, yet the answers say it is impossible.

Physics
At a carnival, you can try to ring a bell by striking a target with a 8.46-kg hammer. In response, a 0.411-kg metal piece is sent upward toward the bell, which is 5.22 m above. Suppose that 34.4 percent of the hammer's kinetic energy is used to do the work of sending the ...

Physics
A skier slides horizontally along the snow for a distance of 12.1 m before coming to rest. The coefficient of kinetic friction between the skier and the snow is 0.0343. Initially, how fast was the skier going?

physics
The person in the drawing is standing on crutches. Assume that the force exerted on each crutch by the ground is directed along the crutch, as the force vectors in the drawing indicate. If the coefficient of static friction between a crutch and the ground is 0.793, determine ...

physics
The drawing shows a wire tooth brace used by orthodontists. The top-most tooth is protruding slightly, and the tension in the wire exerts two forces, and , on this tooth in order to bring it back into alignment. If the forces have the same magnitude of 19.4 N, what is the ...

physics
A 72.2-kg person stands on a scale in an elevator. What is the apparent weight when the elevator is (a) accelerating upward with an acceleration of 1.53 m/s2, (b) moving upward at a constant speed, and (c) accelerating downward with an acceleration of 1.44 m/s2?

Physics
helicopter flies over the arctic ice pack at a constant altitude, towing an airborne 108-kg laser sensor which measures the thickness of the ice (see the drawing). The helicopter and the sensor move only in the horizontal direction and have a horizontal acceleration of ...

Physics
A tourist being chased by an angry bear is running in a straight line toward his car at a speed of 6.54 m/s. The car is a distance d away. The bear is 26.0 m behind the tourist and running at 10.4 m/s. The tourist reaches the car safely. What is the maximum possible value for d?

math algebra
oh ok thanks!

math algebra
Jo needs to know which of the following cannot be a prime number whenever p is a prime number greater than 2001. A. p-2 B. p+2 C. p+999 D. p+9990 Im stuck

math
Jo needs to know which of the following cannot be a prime number whenever p is a prime number greater than 2001. A. p-2 B. p+2 C. p+999 D. p+9990

Math
The roots of x^2-999999x-9999=0 and ? are additive intergers A. x^2+999999x-9999=0 B. x^2-999999x+9999=0 C. x^2+999999x+9999=0 D. x^2-9999x-999999=0

math
The roots of x^2-999999x-9999=0 and ? are additive intergers A. x^2+999999x-9999=0 B. x^2-999999x+9999=0 C. x^2+999999x+9999=0 D. x^2-9999x-999999=0

math
When n= ?, one term in the expansion of (2x^2+3x+2)^n is 1024. A. 4 B. 8 C. 9 D. 10

Math
One solution contains 25% as much water as alcohol and another solution contains 5 times as much water as alcohol. How many gallons of each solution must be mixed in order to obtain 7 gallons of the new solution which contains as much water as alcohol? Please help. I don't...

physics(kinematics)
Thanks guys, I really appreciate your effort.

physics(kinematics)
The acceleration of a particle is defined by the relation a=-8m/s2. Knowing that x=20m when t=4 and that x=4m when v=16m/s. Determine. A)the time when the velocity is zero. B)the velocity and total distance traveled when t=11s.

Biology
1 bacteria 2 I don't know 3 cells?

Biology
1) Mucus traps __________. 2) The windpipe is lined with sticky __________ and microscopic __________. 3) Tiny microscopic __________ are called cilia.

Chemistry Please Help Thanks!
Calculate the volume of solution that has a vapour pressure of 25.8 mbar and contains 200.3 g of galactose, C6H12O6, at a temperature of 22.0 °C. The vapour pressure of pure water at 22 °C is 26.40 mbar, the density of water is 1.00 g mL-1, and assume no change in ...

Physics
Two ropes are attached to a wagon, one horizontal to the west with a tension force of 40 N and the other east at an angle of 23° northward and a tension force of 50 N. Find the components of the net force on the cart

math
The ratio of girls to boys in Liza’s classroom is 5 to 4. How many girls are in her classroom if there is a total of 27 students?

calculus
Please do,I'm waiting...

calculus
Integral of 1/[x^2(1+x^2)]

math stuck please help!!!
A private plane traveled from Seattle to a rugged wilderness , at an average speed of 252 mph . on the return trip , the average speed was 180 mph . if the total time was 9 hours how far is Seattle from the wildness

calculus(urgent pls)
Integral of 1/[x^2(1+x^2)]

chemistry
Higher signal to noise signal ratios can be achieved in FTIR spectra compared to spectra from dispersive ir instrument. how is such a useful feat achieved in ftir

Calculus(URGENT PLS!!!)
Find the integral of (e^cosx)sinx

Maths(URGENT ANSWER please )
Find the sum to infinity of the series 1 + 4/3! + 6/4! + 8/5!

Maths(URGENT ANSWER please :
The book says the a answer is 2

Maths(URGENT ANSWER please :
Find the sum to infinity of the series 1 + 4/3! + 6/4! + 8/5!

Chemistry
I just need help with these three 1.Cell respiration glucose is reacted wth oxygen in body to produce carbon dioxide and water how many liters of carbon dioxide would be produced if 90.0 g of glucose completely reacts with oxygen C6H12O6(s)+ 6O2(g) -> 6H2O(g) + 6CO2 (g) 2. ...

If you answer these questions I will pass this cla
1.Cell respiration glucose is reacted wth oxygen in body to produce carbon dioxide and water how many liters of carbon dioxide would be produced if 90.0 g of glucose completely reacts with oxygen C6H12O6(s)+ 6O2(g) -> 6H2O(g) + 6CO2 (g) How many liters of carbon dioxide ...

Chemistry
Can I call someone and talk to them

Math
Will a cylinder always have a larger volume than a rectangular prism?

Math
The triangular prism has a height of 17.5 in and a base area of 14.5 in. The rectangular prism has dimensions of 10 x 5 x 6, and the cylinder has a height of 6 in and a dimater of 8 in.

Math
A cylinder fish tank has a volume of 301.44, a rectangular fish tank as a volume of 300, and a triangular prism tank has a volume of 253.75. Obviously the cylinder tank holds more water, but is there a mathematical reason why other than its bigger?

english
Thanks!

english
We have to find the right linking verb. 1.) It was she/her who was the director. She 2.) The owner of the recording equipment was me/I. I 3.) The engineer helping with the recording was her/she. She 4.) The person testing how the microphone sounded was I/me. I 5.) The ...

math
show that : cos(360*+x)-tan(180*-x)sin(360*-2x)cos(-x) divided by sin(90*+x)=cos2x

math
show that : cos(360*+x)-tan(150*-x)sin(360*-2x)cos(-x)/ sin(90*+x)=cos2x

Maths(URGENT pls!!!)
Find the sum to n terms of 1/(1.2.3) + 3/(2.3.4) + 5/(3.4.5) + 7/(4.5.6)

Mathw(URGENT pls)
Yes,your answer is correct. Can you please show your workings?

Mathw(URGENT pls)
Find the sum to n terms of 1/(1.2.3) + 3/(2.3.4) + 5/(3.4.5) + 7/(4.5.6)

Maths (URGENT!!!)
2).Find the sum to n terms of 1/(1.2.3) + 3/(2.3.4) + 5/(3.4.5) + 7/(4.5.6)

math
now that we know its a typo can we just try and solve it?

math
im sick at home so i can't ask her

math
i know. That is how the problem was written

math
Bobby has been driving at a constant speed for the last 30 minutes. If Bobby is traveling at a speed of 70 miles per hour, which equation best represents the relationship between time in hours(c) and distance in miles (d). A. d = 70t B. t = 70d C. d = t + 70 D. t = d + 70 ...

Algebra
How much metal is need to build a trough 6 ft long and 2 feet wide?

Algebra
How much metal is need to build a trough 6 ft long and 2 feet wide?

English
was this right?

physics
a force of 150N does 3.40kj of work over a displacement of 25.0m. what is the angle between the force vector and the displacement vector?

Physics
It takes a force of 53kN on the lead car of a 16-car passenger train with mass 9.1x 10^5 kg to pull it atconstant 45 m/s on level tracks. (a) What power must the locomotive provide to the lead car? (b) How much more power to the lead car than calculated in pan (c) Would be ...

Vector
A boy can swim with a speed of 26metre per minute in still water. Be wants to swim across a 150metere wide river from point A to point B directly opposite on the other side of the River.The river flows at 10metre per minute (a)if he always swims in the direction parallel toAB,...

chemistry
C is correct for anyone wondering!

statistics
There is a multiple choice exam with 24 questions, and five options each. If i guess every question, what is the probability that i will get exactly 15 correct.

Integration
I got stuck here,can you please proceed/complete it

Integration
Integral of XarcsinX dx. ii)X^2.arcsinX dx

Science
thanks

language arts
Be still, sad heart! and cease repining; Behind the clouds is the sun still shinning; thy fate is the common fate of all, into each life some rain must fall some days must be dark and dreary 1. from the context, what do you conclude is the probable meaning of repining in the ...

physics
A constant torque of 200Nm turns a wheel about its centre. The moment of inertia about this axis is 100kgm^2

physics(urgent answer pls)
A projectile is launched with 30m/s at an angle of 60degree with d horizontal (a) find d position of the projectile,and d magnitude and direction of its velocity at t=2s (b) find d time when d ball reaches the highest point (c) find d horizontal range

social studies
A

art
A conservator is working to restore a large marble statue from a Greek temple by scrubbing it with water and soap. What is a likely drawback to this preservation? A. Breaking of large sections of marble during scrubbing. B. Removing the aged look of the statue during scrubbing...

math
$30.80

Physics
Thank you

Physics
A box slides down a 27.7° ramp with an acceleration of 1.25 m/s². The acceleration of gravity is 9.8 m/s². Determine the coefficient of kinetic friction between the box and the ramp.

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