Thursday

July 28, 2016
Total # Posts: 33

**Chemistry**

For the reaction shown, calculate how many grams of oxygen form when each of the following completely reacts. 2HgO(s)→2Hg(l)+O2(g)
*July 17, 2016*

**Chemistry**

A chemistry laboratory of an experience is being conducted. The pressure is 0.9 atm and the temperature is 18°C. One of the steps of the experience requires the combustion of 500 mL ethanol (Density=0.78 g/mL). Whereas the burning of this amount of ethanol does not ...
*January 19, 2016*

**Physics**

A rocket moves upward, starting from rest with an acceleration of 26.3 m/s2 for 5.43 s. It runs out of fuel at the end of the 5.43 s but does not stop. How high does it rise above the ground?
*March 4, 2015*

**physics**

friction between tires and pavement supplies the centripetal acceleration necessary for a car to turn. Using the coefficients of friction for rubber on concrete calculate the maximum speed at which a car can round a turn of radius 30 m (a) when the road is dry; (b) when the ...
*February 22, 2015*

**Math**

You have been asked to build a ramp for Dan’s Daredevil Motorcycle Jump. The dimensions you are given are indicated below. Find the height and incline in feet. Round to the nearest foot One side is 200 ft.The angle between the hypotenuse and the side of 200 ft is 13 ...
*October 24, 2014*

**science**

THANK U LANA
*October 8, 2014*

**Physics**

What is the momentum of a 52-kg carton that slides at 5.0m/s across an icy surface?
*February 27, 2014*

**math**

A number is divided by 2. If 16 is added to the quotient you get 20
*November 30, 2012*

**physics**

A sniper is in training. He discovers the target is at 1000 meters right north to where he ambushes. According to his measurement, it's a moving at a uniform speed of 20 meter/second towards east. What is the position of the target after 2 seconds?
*January 23, 2012*

**geometry**

Angles BAC and Angle CAD are supplementary angles. Find the measures of each angle if the measure of Angle BAC is 10x + 16 and the measure of Angle CAD is 7x + 8. Round angle measures to the nearest tenth
*October 3, 2011*

**science(physics)**

vector a+ vector b= 2i Vector a+ vector b=4j Then the angle between vector a and vector b is ? Plz.solve
*June 10, 2011*

**science(physics)**

a force f= 3i+cj+2k acting on a particle causes displacement , d=-4i+2j+3k. If the work done is 6 joule then the value of c. Plz. Solve
*June 10, 2011*

**science(physics)**

given vectors , Vector a= 2i + 3j, then the angle between vector a and y axis is? Plz solve
*June 10, 2011*

**science(physics)**

two forces are in the ratio 1:2 named p and q.if their resultant is at an angle tan inverse root 3 /2 to vector p then the angle between p and q is ? Plz solve.
*June 9, 2011*

**science(physics)**

the sum of three forces f1=100n, f2=80n, f3=60n acting on a particle is zero. The angle between f1 and f2 is: Please solve
*June 9, 2011*

**science(physics)**

when two forces of magnitude p and q are perpendicular to each other their resultant is of magnitude 'r'. When they are at an angle of 180 degree to each other their resultant is 'r root 2'find the ratio of p and q.
*June 9, 2011*

**maths (trigonometry)**

how can we calculate the value of Cos 10+sin 10/cos 10- sin 10
*June 9, 2011*

**maths (trigonometry)**

how can we calculate the value of Sec50 degree+tan 50 degree
*June 9, 2011*

**maths (trigonometry)**

how can we calculwte the value of Cot 70 degree+4 cos 70 degree
*June 9, 2011*

**maths (trigonometry)**

calculate the following: 1)sin 50 degree-sin 70 degree+sin 10deg. 2)cos square 48 deg.- sin square 12 deg. 3)tan 20 deg.+tan 40 deg.+root 3 tan 20 tan 40 Plz. Solve these
*June 8, 2011*

**maths (trigonometry)**

what is the identity of A raise to 4+b raise to 4
*June 8, 2011*

**maths (trigonometry)**

1+sin a- cos a/1+sin a +cos a eual to ?. How?
*June 8, 2011*

**maths (trigonometry)**

if sec x +tan x=p, then tan xeuqalto what. How?
*June 8, 2011*

**maths (trigonometry)**

if cosx-sinx=root 2 sinx, then what is the value of cosx+sinx. How
*June 8, 2011*

**maths (trigonometry)**

please solve these if possible Q1. If sinx +siny=3(cosy-cosx) then the value of sin3x/sin3y. Q2. If sina ,cosa,and tan a are in g.p.then cos cubea+cos square a is equal to
*June 6, 2011*

**physical science**

in a transverse wave, the what is the lowest point?
*March 15, 2010*

**american government before 1877**

it took away congress's power of declaring war.
*June 28, 2009*

**205**

2. The annual rainfall in California’s north valley averages twenty-three inches. So the rainfall next year will be twenty-three inches. B - Probably true. 3. You expect to get forty miles to the gallon in that? Why, that old wreck has a monster V8; besides, it’s ...
*May 8, 2008*

**english: critical thinking**

Those answers are right. I also got 100% :-)
*March 19, 2008*

**Chemistry**

The energy level of the valence electrons of every element is the same as its period in the periodic table. So in this case Lead = 6 (E.)
*November 18, 2007*

**math**

m^8n^6 _______ m^4n^2 i got m^2n^3. is this right? Is this a division problem? If so, you subtract exponents. a^4/a= a^3
*July 2, 2007*

**math**

9c^5d^8 * 4c^5d^8 __________________ 2c^5d^5 the answer i got is 18d^21c^15 is this anywhere close to being right? :) pls show how you get the answer if its different! :) thx Is this problem division, or multiplication? Either way, it is wrong.
*July 2, 2007*

**Science**

What is the mass of 10cc of aluminum? Mass= volume*density. You need to look up the density of aluminum.
*November 7, 2006*

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