# Posts by Zen

Total # Posts: 17

MATH
Two poles are 24 metres and 30 metres high and 20 metres apart. A slack wire joins the tops of the poles and is 32 metres long. A cable car is moving along the wire at 5 metres per second away from the shorter pole. When the car is 12 metres horizontally from the shorter pole...

MATH
The answer are 9.26 in/hr and 13.33 in/hr

MATH
The upper chamber of an hour-glass is a cone of radius 3 inches and height 10 inches and, if full, it requires exactly one hour to empty. Assuming that the sand falls through the aperture at a constant rate, how fast is the level falling when: a) the depth of the sand is 6 ...

Highland
A cash register has no one dollar bills and all of the bills are five dollar bills \$10 bills or \$20 bills they are a total of 37 in the cash register and the total value of his bills is &310 if the number of the \$10 bill in the register is twice the number of \$20 bills how ...

Could someone be a bit more specific about what you do? Cuz I do 15x5,280=79,200 then what?

chemistry
The administration of 100 mg or more of morphine (molar mass 283) to a patient would probably be lethal. Which of the following would you consider to be a safe dose?

Maths
The sum of two whole number is 23.The different between them is 5.What is the smaller number?

Maths
The sum of two whole number is 23.The different between them is 5.What is the smaller number?

Maths
The two digits of a 2-digit number add up to 16. The smaller digit is in the ones place. What is the number

chemistry
If the iodine value obtained for an experiment is negative,could this be due to an experimental error?

Chemistry
Write a balanced equation for the formation of boehmite (ALO2H) from aluminium ions and hydroxide ions.

physics
What is the magnitude of an electrostatic force experienced by one elementary charge at a point in an electric field where the field intensity is 3.0 x 10^3 newtons per coulomb? a) 1.0 x 10^3 N b) 1.6 x 10^-19 N c) 3.0 x 10^3 N d) 4.8 x 10^-16 N

science/physics
I was in a crosswalk, struck by a truck weighing 3,400 lbs. (traveling at about 8 K/hr) - what was the force per square inch exerted on me?

physics
2.9

Chem
Using this formula.. pH = -log(H^+) find the pH 1.6 x 10^(-5)

Algebra
Evaluate the logarithmic function for three values of x between zero and one, three values of x greater than 1, and at x=1. Show your work. Use the resulting ordered pairs to plot the graph. State the domain and the range of the function. g(x) = ln x + 2

Calculus I
dR/dt = .3 ohms/s I = 18V/R d/dt(I) = d/dt(18V/R) dI/dt(I) = dR/dt(18V/R) dI/dt = dR/dt*(-18/R**2) dI/dt = .3*(-18/4**2) dI/dt = -.3375amp/s Hope you understand my work! Cheerz

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