trigonometry
howard and keight who are 2km apart are on a horizontal plane observe a balloon in the same vertical plane with themselves the angles of elevation are 50 degrees and 65 degrees respectively find the height of the balloon. A.if its situated between howard and keight B.If it is...
trig
howard and keight who are 2km apart are on a horizontal plane observe a balloon in the same vertical plane with themselves the angles of elevation are 50 degrees and 65 degrees respectively find the height of the balloon. A.if its situated between howard and keight B.If it is ...
CHEMISTRY HELP!!
Initial [HCHO2](M)= 0.5 [H+](M) = 0 [CHO2-](M)= 0 Change = ? Equilibrium = ?
CHEMISTRY HELP!!
Formic acid (HCHO2) is a component of bee stings. It is a weak acid and dissociates according to the equilibrium shown below: HCHO2 <===> H+ + CHO2- Kc = 1.8 x 10-4 For a 0.5 M solution of formic acid, we wish to determine the equilibrium concentration of H+. Complete th...
physics
thank you very much my friend.
physics
What is the cost of electrical heating 50 liters of water from 40degree celsius to 100degree celsius at USD 8.0 /kwh?
physics
A resistor is to have a constant resistance of 30(ohm), independent of temperature. For this, an aluminum resistor with resistance R1 at 0(Celsius) is used in series with a carbon resistor with resistance R2 at 0(Celsius). Evaluate R1 and R2, given that a1=3.9 x 10^-3 degree C...
technology in the classroom
what is one disadvantage of drill-and-practice programs?
curriculum content
which is the oldest art? A.Dram-theater B. photography C. Dance D. music
curriculum content
when are childern first developmentally ready to being learning science?
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