Recent content by SUchica10

Within a monolayer phospholipid molecules exchange places with their neighbors every 10^-7 seconds. It takes about 1 second for a phospholipid to diffuse from one end of the bacterium to the other, a distance of about 2 micrometers. A) Are these numbers in agreement? Assume that the diameter...

Within a monolayer phospholipid molecules exchange places with their neighbors every 10^-7 seconds. It takes about 1 second for a phospholipid to diffuse from one end of the bacterium to the other, a distance of about 2 micrometers. A) Are these numbers in agreement? Assume that the...

When hydroxide ion is added to Mn(II) in aqueous solution, an insoluble white precipitate of manganous hydroxide, Mn(OH)2, is formed. If there is oxygen present, this material reacts with it to form manganic hydroxide, Mn(OH)3 Part one was easy because it wasnt a redox it just needed to be...

A gate in an irrigation canal is in the form of a trapezoid 3 feet wide at the bottom, 5 feet wide at the top, with the height equal to 2 feet. It is placed vertically in the canal with the water extending to its top. For simplicity, take the density of water to be 60 lb/ft cubed. Find the...

I'm really sorry but now I'm confused.

I understand it now and I'm pretty sure I got it I just have one question... why is it e^(-k)? I understand t = 1 so that just leaves me with k but why is it negative?

A sample of tritium 3 decayed to 94.5% of its original amount after a year. (a) What is the half-life of tritium-3? (b) How long would it take the sample to decay to 20% of its original amount? The only equations given in my book are dm/dt = km and m(t) =...

I am thinking it is the center of mass.

My teacher does not explain well and I don't know where to start... I am thinking that I will need to integrate but I am not sure what the function would be.

Sketch the region bounded by the curves and visually estimate the location of the centroid. Then find the exact coordinates of the centroid. y=1/x, y=0, x=1, x=2

This probability problem is for my calculus class... a) A type of lightbulb is labeled as having an average lifetime of 1000 hours. It's reasonable to model the probability of failure of these bulbs by an exponential density function with mean = 1000. Use this model to find the probability...

so i just did this in lab last week so I am able to help you... 1/2 m1(vi1^2) + 0 = 1/2m1(vf1^2) + 1/2 m2(vf2^2) all the 1/2s cancel m1(vi1^2) = m1(vf1^2) + m2(vf2^2) momentum before = momentum after m1(vi1) = m1(vf1) + m2(vf2) ---> vf1 = [m2(vf2) - m1(vi1)] / m1 plug vf1 solved...

Hi, I am stuck on this problem, any feedback would be greatly appreciated. Thank you... The leaning Tower of Pisa is 55 m high and 7.0 m in diameter. The top of the tower is displaced 4.5 m from the vertical. Treating the tower as a uniform, circular cylinder, (a) what additional...

What are (a) the angular speed, (b) the radial acceleration, and (c) the tangential acceleration of a spaceship negotiating a circular turn of radius 3220 km at a constant speed of 28,700 km/h? I am not sure what formulas to use... any suggestions would be appreciated.