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Questions (37)
The locus of a point whose distance from point (0,5) is always 3/4 of its distance from the line Y=8 is an elipse. Find the
1 answer
495 views
calculate the work performed if a balloon contracts from 12.32L to 422 ml due to an extermal pressure of 3.1 atm
0 answers
459 views
A uniform solid cylinder of radius R and a thin uniform spherical shell of radius R both roll without slipping. If both objects
1 answer
5,792 views
A 200g bottle has a mass of 340g when filled with water and 344g when field with blood plasma. what is the density of plasma?
1 answer
1,159 views
find the are of the surface of the part of the sphere (x^2)+(y^2)+(z^2)=4 that lies above the plane z=4
1 answer
532 views
find the volume of the solid obtianed by rotating the region bounded by the given curves about the line x=6
x=y^2 , x=1
0 answers
406 views
Calculate the derivative.?
d/dx ∫ from √x to x^2 tan9tdt = Use symbolic notation and fractions where needed.
1 answer
474 views
A factory produces bicycles at a rate of 80+0.3t^2−1.1t bicycles per week (t in weeks). How many bicycles were produced from
3 answers
4,299 views
calculate the volume of 0.080 acetic acid needed to prepare 4.0 L of aceic acid solution with a PH of 4.00
L=
1 answer
525 views
when 1.00 g of stearic acid ( a saturated fatty acid) is dissolved in water, then diluted to exctly 10.00 ml, the PH of the
1 answer
671 views
calculate the volume of 0.050 acetic acid needed to prepare 4.0 L of aceic acid solution with a PH of 3.80
L=
1 answer
726 views
A 4.00 L solution of KOH is prepared by diuling 400.0 m 0f 0.290 M KOH with warer
[OH-]=
1 answer
1,081 views
calculate the PH during the titration of 50.00 ml of 0.300 M HNO3 with 0.600 M KOH after 0, 15.50, 25.00, and 40.00 ml of KOH
2 answers
855 views
calculate the PH during the titration of 50.00 ml of 0.300 M HNO3 with 0.600 M KOH after 0, 15.50, 25.00, and 40.00 ml of KOH
1 answer
652 views
Calculate R8 for f(x)=8−x over [3,5].
R8=
1 answer
644 views
Calculate R8 for f(x)=8−x over [3,5].
R8=
1 answer
2,050 views
Calculate R8 for f(x)=8−x over [3,5].
R8=
0 answers
492 views
find L- Hospital
lim x-> inf f(x)=1/e^(-x)
0 answers
412 views
find L- Hospital
lim x_---- inf 1/e^(-x)=
2 answers
1,197 views
Find the radius and hight of cylinder with voume 64π and radius r between 1 and 5 that has smallest possible surface area. A
2 answers
626 views
calculate the half-life of a first- order reaction if the concentration of the reactant is 0.0396 M at 12 seconds after the
1 answer
642 views
calculate the half-life of a first- order reaction if the concentration of the reactant is 0.0396 M at 12 seconds after the
1 answer
687 views
How long would it take for the concentration of the reactant to drop to one-forurth its initial value?
initial concentration of
1 answer
685 views
if the initial concentration of the reactant in the first order reaction A→products is 0.64 mol/L and the half-life is 30 s,
1 answer
791 views
Find the angle that maximizes the area of the isosceles triangle whose legs have length l=31
angle=
0 answers
694 views
Find the angle that maximizes the area of the isosceles triangle whose legs have length l=31
angle=
4 answers
4,613 views
Your task is to design a rectangular industrial warehouse consisting of three separate spaces of equal size.?
The wall materials
0 answers
993 views
A box is constructed out of two different types of metal. The metal for the top and bottom, which are both square, costs $4 per
2 answers
753 views
Suppose that 404 ft of fencing are used to enclose a corral in the shape of a rectangle with a semicircle whose diameter is a
1 answer
1,747 views
Find a point c satisfying the conclusion of the Mean Value Theorem for the following function and interval.
f(x)=x^−1 [1,9]
1 answer
4,171 views
Estimate 1/(sqrt(82)) using linear approximation and the exact value for 1/(sqrt(81))
Your estimate:
0 answers
559 views
A searchlight rotates at a rate of 4 revolutions per minute.?
The beam hits a wall located 13 miles away and produces a dot of
3 answers
6,270 views
A searchlight rotates at a rate of 4 revolutions per minute.?
The beam hits a wall located 13 miles away and produces a dot of
2 answers
1,250 views
Use the Linear Approximation to estimate ∆f=f(3.5)−f(3) for f(x)=2/(1+x^(2))?
Δf ≈ Estimate the actual change. (Use
2 answers
2,611 views
A 15 ft ladder leans against a wall. The bottom of the ladder is 4 ft from the wall at time t=0 and slides away from the wall at
2 answers
7,429 views
Find the volume of the solid obtained by rotating the region under the graph of the function f(x)=x^8/9 about the x-axis over
4 answers
2,745 views
A street light is at the top of a 19 ft tall pole. A woman 6 ft tall walks away from the pole with a speed of 5 ft/sec along a
0 answers
1,256 views
Answers (6)
calculate the Ph in the titration of 50.00 ml of 0.100 M ammonia with 0.100 M HCl after 0,24.00,50.00, and 74.00 ml acid have been added Ka((NH3)= 1.8x10^(-5) PH= ............ when 0 ml added. PH= ............ when 24.00 ml added PH= ............ when
it says the answer is incorrect
it says the answer is incorrect
Find the volume of the solid obtained by rotating the region under the graph of the function f(x)=e^x about the x-axis over the interval [0,2].
Find the volume of the solid obtained by rotating the region under the graph of the function f(x)=(2)/(x+1) about the x-axis over the interval [0,4].
A street light is at the top of a 19 ft tall pole. A woman 6 ft tall walks away from the pole with a speed of 5 ft/sec along a straight path. How fast is the tip of her shadow moving when she is 40 ft from the base of the pole?