Friday

February 27, 2015

February 27, 2015

Total # Posts: 23

**Gr. 12 Physics**

A pilot must fly his plane to a town which is 200km from his starting point in a direction 30degrees N of E. He must make the trip in 1/2 h. An 80km/h wind blows in a direction 30degrees E of S. Find the speed of the plane relative to air. I found the speed of the plane ...
*September 30, 2012*

**Chemistry HELPP!!!!!!**

We did an experiment and I don't really know how to calculate this question. If you could show me how to do one, then I could do the rest. INFORMATION: HCl = 0.1404 M We placed 0.5 g Ca(OH)2 in 100 mL of the following solutions: Flask A: Distilled Water (8.5 mL of HCl ...
*March 26, 2012*

**Geometry**

In ^DEF, the bisector of <F divides the opposite sides into segments that are 4 and 9in long. The side of the triangle adjacent to the 4 in. segment is 6in long. To the nearest tenth of an inch, how long is the third side of the triangle?
*February 21, 2012*

**Geometry**

The altitude of the hypotenuse of a right triangle divides the hypotenuse into segments of lengths 14 and 8. What is the length of the altitude?
*February 21, 2012*

**geometry**

What is the geometric mean of 7 and 12?
*February 21, 2012*

**geometry**

Please Help. MNOP~Qrst with a scale factor of 5:4. MP=85mm. What is the value of QT?
*February 19, 2012*

**Geometry**

Please help. The scale factor of ^RST to ^DEC is 3:13. What is the scale factor of ^DEC to ^RST?
*February 19, 2012*

**Geometry**

thanks
*February 19, 2012*

**Geometry**

Please help. The scale factor of ^RST to ^DEC is 3:13. What is the scale factor of ^DEC to ^RST?
*February 19, 2012*

**Geometry**

Please Help. You make a scale draing of a garden plot using the scale 2in.= 17ft. If the length of a row of vegetables on the drawing is 3 in.,how long is he actual row?
*February 19, 2012*

**geometry**

Can someone help? Your make a scale drawing of a tree using the scale 5 in. =27 ft. If the tree is 67.5 ft tall, how tall is the scale drawing?
*February 18, 2012*

**chemistry**

how would i use 2180 as a c1 or c2?
*February 15, 2012*

**chemistry**

Calculate the volume of 2,180 ppm Pb(NO3)2 solution required to prepare 1.2550 L of a 0.0021 M Pb2+ solution.
*February 15, 2012*

**chemistry**

Calculate the volume (mL) of 2.06 M magnesium phosphate solution require to prepare 46.20 mL of 2.3998 %w/v solution of Mg3(PO4)2
*February 15, 2012*

**physics**

a very bright source of red light has much more energy than a dim source of blue light, but the red light has no effect in ejecting electrons from a certain photosensitive surface. why is this so?
*April 18, 2011*

**algebra 1**

how do you graph quadractic function
*April 17, 2011*

**biology**

the unique properties of water make life possible on earth, select three properties of water and: a) for each propery, identify and define the property and explain it in terms of the physical/chemical nature of water b) for each property,describe one example of how the ...
*December 12, 2010*

**chemistry**

From data below, calculate the total heat (J) needed to convert 0.298 mol of gaseous ethanol (C2H6O) at 401°C and 1 atm to liquid ethanol at 25.0°C and 1 atm.
*October 6, 2010*

**chemistry/thermochem**

The bond enthalpy of F2(g) is 156.9 kJ/mol. Calculate ÄH°f for F(g). 1 kJ/mol
*October 6, 2010*

**SCIENCE**

WHICH PROCESS PRODUCES MOST OXYGEN IN ATMOSPHERE PHOTOSYNTHESISI OR TRANSPIRATION WHICH GAS DOES PHOTOSYNTHESISI PRODUCE OXYGEN OR CARBON DIOXIDE GRAS--GRASSHOPPER-SNAKE-HAWK IF APART OF A FOOD WEB WOULD MORE MORE ARROWS POINT TOWARD OR AWAY FOR THE SECOND LEVEL CONSUMER WHY
*October 28, 2009*

**MATH/SCIENCE**

which process proceds most of the oxygen in earths atmosphere phototsynthesis or transipation what gas does photosyntheses produce carbon dioxide or oxygen grasss-grasshopper--snake--hawk if apart of the food web qouls mORE ARROWS POINT TOWARD OR AWAY FROM 2ND LEVEL
*October 28, 2009*

**Math**

82 or is it 34
*November 5, 2007*

**Math**

8x6-7x2=
*November 5, 2007*

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