Wednesday
December 11, 2013

# Posts by Kai

Total # Posts: 85

Word Problem Question
shouldn't the answer be 181,000 tons

Word Problem Question
I would like to know if I am correct, so far. The amount P of pollution varies directly with the population N of people. City A has population of 494,400 and produces 260,000 tons of pollutants. Find how many tons of pollution we should expect City B to produce if population i...

algebra
a ball is thrown downward from the too of 110 ft bldg with an initial velocity of 14ft per second. the height of ball h after t seconds is given by the equation h = -16t^2-14t +110. how long after ball is thrown will it hit the ground

algebra
a ball is thrown downward from the too of 110 ft bldg with an initial velocity of 14ft per second. the height of ball h after t seconds is given by the equation h = -16t^2-14t +110. how long after ball is thrown will it hit the ground

Algebra
*correction of previous post* Find the LCD of the rational expressions in the list. m-2/m^2+2m , -8/m^2+6m+8

physics
It Takes 2 N of force to get a 15 kg object to move horizontally on a surface. What is the normal force of the surface on the object?

Physics
I have these two equations that I'm supposed to set equal to each other and find the answer for h which is height for this problem. But I don't think I'm solving it correctly. 0 - (h/5) = -1.1(v0) - (1/2)(-9.8)(1.1)^2 (v0)^2 = 2(-9.8)(h/5 - h) My final answer was h...

Math
Or how do I take the derivative of that?

Math
what does this derivative mean? (d/dx)(d/dt)(x^2t + t^2x - 2x^3)

Physics
During launches, rockets often discard unneeded parts. A certain rocket starts from rest on the launch pad and accelerates upward at a steady 3.50 m/s^2. When it is 255 m above the launch pad, it discards a used fuel canister by simply disconnecting it. Once it is disconnected...

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