02/18/15

Suppose that atomic masses were based on the assignment of a mass of 12.000 g to a mol a carbon;
rather than a 1mol of 12 carbon.  Find the atomic mass of oxygen.
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02/18/15

thermometer has 3.380 g of merc, and a capilary that's 0.200mm in diameter
How far does the mercury rise in the capillary when the temp changes from 0.0 degrees C to 25.0 degrees C? The density of mercury at these temps is 13.596 g/cm cubed and 13/534 g/cm cubed... more
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02/17/15

the perimeter of a rectangle whose dimensions are 90 in. and 56 in.
What are the perimeter of a rectangle whose dimensions are: 90 in. And 56 in?
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02/17/15

How much fruit was bought?
On a trip to the market, you purchased 3 1/2 pounds of peaches, 2 3/4 pounds of apples, and 1 1/8 pounds of blueberries. How much fruit did you buy ?
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02/17/15

what is the difference between i apologize and i am apologize? thank you very much!
this is to request the way to ask apologize?
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02/17/15

Can you show me a shape that has and area of 24 and a perimeter of 22 other than 3 X 8
can you show me a shape othe than 3x8 that has a peremiter of 22 and area of 24?  
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02/17/15

(2a+b)square-9
factorise
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02/17/15

find the area of inner surface of the boundary wall
for a rectangular plot of land measuring 45m ad 30m.  a boundary wall of height 2.4m is built all around the plot at a distance of 1m from the plot
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02/16/15

How many calories are required to rise the temperature
How many calories are requried to rise the temperature of 25 g of water from 50 c to 70 c? The specific heat of water is 1 cal/gc.
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02/16/15

Cobolt-60 has a half-line of 30 years.
Cobalt-60 has a half-line of 30 years. A cobalt-60 sample has an initial activity of 100mCi. What is the activity after 120 years?
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02/16/15

What is the product of the beta decay of polonium-210?
What is the product of the beta decay of polonium-210?
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02/16/15

what is the nuclear symbol for titanium-49? How many protons, electrons and neutrons for this isotope?
What is the nuclear symbol for titanium-49? How many protons, electrons and neutrons for this isotope?
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02/16/15

Discuss whether Management by Objectives (MBO) is used to motivate or control the people?
Principles of Management
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02/16/15

On which day would it cover 1/81 of the pond?
A lily in a pond trebles its size every 3 days. It covered the pond completely on a Friday. On which day would it cover 1/81 of the pond?  
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02/16/15

How many strawberries are there in the fruit shop now?
last week, the ratio of the number of cherries to strawberries in a fruit store was 6:1. This week, there are 85 more strawberries in the store. There are now 3 times as many strawberries as... more
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02/16/15

A rectangle 16 cm long and 13 cm wide. Find the angles formed with the sides and a diagonal of the rectangle
A rectangle 16 cm long and 13 cm wide. Find the angles formed with the sides and a diagonal of the rectangle 
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02/16/15

Word problem
You need to determine the length of a tunnel drilled through a lunar peak at the center of a crater. From a point outside of the crater on the ground, you run ropes to the ends of the tunnel. The... more
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02/16/15

Find both speeds?
A train travels 150 kilometers in the same time that a plan covers 400 kilo meters. If the speed of the plan is 20 km per hour less than 3 times the speed of train. Find both speeds?
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02/16/15

How many fishes are in the lake?
To estimate the number of fishes in the lake biologist tagged 50 fishes and released him in the lake. Later they netted 108 fishes and found 27 of them that were tagged. About how many fishes are... more
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02/15/15

Find the Taylor polynomials of degree 3 for f(x) = x^3 + 2x^2 + x - 2 about a = 1? Also explain the error in this polynominal
I have already found out the Taylor polynomial of degree 3   f(x) = x³ + 2x² + x − 2 ----> f(1) = 2 f'(x) = 3x² + 4x + 1 -------> f'(1) = 8 f''(x) = 6x + 4 --------------> f''(1) = 10... more
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02/15/15

Evaluate the limits
Evaluate lim ((x^(1/n)-a^(1/n))/(x-a)) as x->a and lim ((x^n-a^n)/(x-a)) as x->a?   I didnt learn l'hopital's rule  
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02/15/15

Evaluate: lim ((x^(1/3)-a^(1/3))/(x-a)) as x->a
How to get 1/3a^(2/3)
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02/15/15

rocket-driven sled
A rocket-driven sled running on a straight, level track has been used to study the physiological e?ects of large accelerations on astronauts. One such sled can attain a speed of 351 m/s in 1.6 s... more
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02/14/15

determine the equation of g(x) that results from translating the function f(x)=x^2 +3 upward 11 units
a)g(x) = (x+14)^2 b)g(x) = (x+11)^2 +3 c)g(x) = x^2-8 d)g(x) = x^2+14
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02/14/15

select the x-coordinate of the vertex of the parabola defined by the function f(x)=-7x^2 +3x+2
a) -7/3 b)2 c) 3/14 d)-3/7
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