Wednesday

January 28, 2015

January 28, 2015

Total # Posts: 32

**Physics**

In solid sodium chloride (table salt), chloride ions have one more electron than they have protons, and sodium ions have one more proton than they have electrons. These ions are separated at about 0.28 nm. Calculate the electrostatic force between the sodium ion and the ...
*September 6, 2011*

**Physics**

In solid sodium chloride (table salt), chloride ions have one more electron than they have protons, and sodium ions have one more proton than they have electrons. These ions are separated at about 0.28 nm. Calculate the electrostatic force between the sodium ion and the ...
*September 6, 2011*

**Physics**

In solid sodium chloride (table salt), chloride ions have one more electron than they have protons, and sodium ions have one more proton than they have electrons. These ions are separated at about 0.28 nm. Calculate the electrostatic force between the sodium ion and the ...
*September 6, 2011*

**Physics**

In solid sodium chloride (table salt), chloride ions have one more electron than they have protons, and sodium ions have one more proton than they have electrons. These ions are separated at about 0.28 nm. Calculate the electrostatic force between the sodium ion and the ...
*September 5, 2011*

**Physics**

In solid sodium chloride (table salt), chloride ions have one more electron than they have protons, and sodium ions have one more proton than they have electrons. These ions are separated at about 0.28 nm. Calculate the electrostatic force between the sodium ion and the ...
*September 5, 2011*

**Calculus (pleas help!!!)**

It's cubic centimeter per minute
*April 12, 2011*

**Calculus (pleas help!!!)**

Water is leaking out of an inverted conical tank at a rate of 1100.0 cubic centimeters per min at the same time that water is being pumped into the tank at a constant rate. The tank has height 15.0 meters and the diameter at the top is 5.0 meters. If the water level is rising ...
*April 12, 2011*

**Physics (please help!!!!)**

I dont understand very well what I have to do...What I did before was v= P/W P= (mu(mg)+(1/2)(CD)(rho)Sv^3) w=36.0 MJ*20% V=((mu(mg)+(1/2)(CD)(rho)Sv^3)/ (36x10^6 *0.2) I plugged in the values and got .00217 L/s and then to get the gas mileage=(0.00218^-1 x30)/1000 13.84 km/L
*April 12, 2011*

**Physics (please help!!!!)**

A car experiences rolling (tractive) friction with coecient of friction mut = 0.0200, and turbulent-flow (bv^2) drag, with drag coefficient CD = 0.300. The car has mass (including fuel, which is a negligible fraction of the total) M = 1000. kg and frontal cross-sectional ...
*April 12, 2011*

**Physics (please help!!!!)**

A car experiences rolling (tractive) friction with coecient of friction mut = 0.0200, and turbulent-flow (bv^2) drag, with drag coefficient CD = 0.300. The car has mass (including fuel, which is a negligible fraction of the total) M = 1000. kg and frontal cross-sectional ...
*April 12, 2011*

**Physics (please help!!!!)**

car experiences rolling (tractive) friction with coecient of friction mut = 0.0200, and turbulent-flow (bv^2) drag, with drag coefficient CD = 0.300. The car has mass (including fuel, which is a negligible fraction of the total) M = 1000. kg and frontal cross-sectional ...
*April 12, 2011*

**Physics (please help!!!!)**

A car experiences rolling (tractive) friction with coecient of friction mut = 0.0200, and turbulent-flow (bv^2) drag, with drag coefficient CD = 0.300. The car has mass (including fuel, which is a negligible fraction of the total) M = 1000. kg and frontal cross-sectional ...
*April 12, 2011*

**Calculus (can someone please verify this?)**

Gravel is being dumped from a conveyor belt at a rate of 30 ft^3/min. It forms a pile in the shape of a right circular cone whose base diameter and height are always the same. How fast is the height of the pile increasing when the pile is 19 feet high? Vol = (1/3)pi (h^2/4)(h...
*April 12, 2011*

**Physics**

A projectile of mass m is launched from the ground at time t = 0, with speed v0, at angle theta0 above the horizontal. Aerodynamic drag is negligible. Write the kinetic, potential, and total energies of the projectile as explicit functions of time.
*April 8, 2011*

**Calculus Please Help**

Let f(x) = x^3 - x^2 + x - 1. Find an equation for tangent line to f at x = 2.
*March 23, 2011*

**Calculus**

Fill in the following table, where E(x) denotes the error in approximation of f(x) by T(x). x - 2 x 3 2.1 2.01, 2.001 f(x) T(x) E(x)
*March 23, 2011*

**Calculus**

Find the dereivative of: y =((x^2+1)/2)^6 I really don't know the process to do these one, I tryed to use the quotient rule but then I don't know how to do with the ^6 so I don't think that's the way to do it...
*March 9, 2011*

**Calculus Please Help**

A continuous function f, defined for all x, has the following properties: 1. f is increasing 2. f is concave down 3. f(13)=3 4. f'(13)=1/4 Sketch a possible graph for f, and use it to answer the following questions about f. A. For each of the following intervals, what is ...
*February 22, 2011*

**Calculus Please Help**

A continuous function f, defined for all x, has the following properties: 1. f is increasing 2. f is concave down 3. f(13)=3 4. f'(13)=1/4 Sketch a possible graph for f, and use it to answer the following questions about f. A. For each of the following intervals, what is ...
*February 22, 2011*

**Calculus**

The position of a particle moving along the x-axis is given by s(t)=2t2+4. Use difference quotients to find the velocity v(t) and acceleration a(t), filling in the following expressions as you do so: v(t)=limh->0 [_____ / h ] = ____ a(t)=limh->0 [ ____ / h ] = _____ ok ...
*February 22, 2011*

**Calculus**

The figure below shows a function g(x) and its tangent line at the point B=(2,6.8). If the point A on the tangent line is (1.94,6.87), fill in the blanks below to complete the statements about the function g at the point B. g(2)= _____ g(2)= _____ I found the slope and that ...
*February 15, 2011*

**Algebra**

Oh ok... thanks a lot, I was typing 12 all this time....
*February 14, 2011*

**Algebra**

I'm sorry, yeah it's ((2-h)^3 - 8)/h
*February 14, 2011*

**Algebra**

Use algebra to evaluate the limit lim h->0((2−h)^2−8)/h
*February 14, 2011*

**Calculus**

I tried and I got -1.17 for one of them... I plugged both answers and I just got the g(2) right, I'm not sure what to do now....
*February 14, 2011*

**Calculus**

If a figure shows a function g(x) and its tangent line at the point B=(2,6.8). If the point A on the tangent line is (1.94,6.87), fill in the blanks below to complete the statements about the function g at the point B. g(___) = ______ g(___) = ______
*February 14, 2011*

**Calculus**

If a figure shows a function g(x) and its tangent line at the point B=(2,6.8). If the point A on the tangent line is (1.94,6.87), fill in the blanks below to complete the statements about the function g at the point B. g(___) = ______ g(___) = ______
*February 14, 2011*

**Calculus Please Help**

Let f(x)=4−x^2. Find each of the following: (f(2+h)- f(2))/h = ________ lim h->0 (f(2+h)- f(2))/h = ______
*February 13, 2011*

**Physics**

I fire a tennis ball from an air cannon, straight up from ground level, at initial speed v0. At the instant it reaches the top of its trajectory, I fire a second tennis ball at the same initial speed. Air resistance is negligible. At what fraction of the maximum height reached...
*February 12, 2011*

**Physics...help please!**

I fire a tennis ball from an air cannon, straight up from ground level, at initial speed v0. At the instant it reaches the top of its trajectory, I fire a second tennis ball at the same initial speed. Air resistance is negligible. At what fraction of the maximum height ...
*February 11, 2011*

**Physics**

I fire a tennis ball from an air cannon, straight up from ground level, at initial speed v0. At the instant it reaches the top of its trajectory, I fire a second tennis ball at the same initial speed. Air resistance is negligible. At what fraction of the maximum height reached...
*February 10, 2011*

**Chemistry**

A 6.0g of methane decomposes into 4.5g of Carbon adn 1.5g of Heydrogen. Determine the empirical formula of methane.
*February 10, 2011*

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