maheshwarisymond

I. Aplicando transformada de Laplace halle la solución de los
siguientes sistemas de ecuaciones diferenciales. 

pearl harbor quizlet

How many letters are there in the English alphabet?

How do you feel about math? Is math important to you/your family? Give reasons to support your feelings by sharing some past experiences.

Circumference of semicircle

2+2

3+3

4+4

5+5

6+6

7+7

8+8

9+9

12532*46855

334*565(56+678-453*9)

1+2+3+4+5+6+7+8+9++0=?

How many of you got money from oneclass

Share your experience?

solve for x

x^3 - 14 x^2 + 20x + 9 

What is the radius of a 3.65-inch diameter circle?

What is 5÷4???

a 1.29-m long ladder weighing 200N rests against a vertical wall so that the top of the ladder is at a height of .590 m. a 603-N man stands on the ladder at a distance of .390 m along the ladder. calculate the force exerted by the wall on the ladder. assume the wall is perfectly smooth

A man stands on a tall ladder of height h. He leans over a little too far and falls off the ladder. If his mass is m, what is his kinetic energy right before he hits the ground?

A. 1 mgh

B. 1/2 mgh

C. 2 mgh

A molar (M) solution is define as a mole of a compound dissolved in enough water to make exactly one liter of solution at 200 C. A mole is the molecular weight of a compound in grams (g), e.g. for sodium chloride, it is 22.99 g (atomic weight of sodium) + 35.46 g (atomic weight of chlorine) = 58.45 g. Dissolve 58.45 g of NaCl in 1 liter (1 L) of solution = 1 molar (M) solution. You could also make up the same molarity of NaCl by dissolving 5.845 g NaCl in 100 milliliter (mL) or 0.5845 g in 10 mL or 0.05845 g in 1 mL. To make up lesser concentrations, say 0.1 M, you would add 5.845 g NaCl in 1 liter (L) solution or 0.5845 in 100 mL or 0.05845 g in 10 mL or 0.005845 g. in 1 mL. The metric sytstem is also useful in solutions too: 1 molar (M) is the same as 1,000 millimolar (mM) or 1,000,000 micromolar (M) or 1,000,000,000 nanomolar (nM). Answer the following questions on a separate piece of paper for your lab report. Use correct scientific notation and significant figures: 6. Exercise: Explain how you would make 1000 mL of a 0.25 M solution containing sucrose (C12H22O11 ). 7: Explain how you would make up 200 mL of 0.25 M solution containing glucose using solid sucrose and distilled water, 8. Explain how you would make up 200 mL of 0.025 M solution containing glucose using solid sucrose and distilled water. 9. What is the concentration in 8 expressed as mM? 10. What is the concentration in 8 expressed as M?

An air-filled capacitor consists of two parallel plates, each withan area of 7.60 cm2, separated by a distance of 2.00 mm.
(a) If a 22.0 V potential difference is applied to these plates,calculate the electric field between the plates.
kV/m

(b) What is the surface charge density?
nC/m2

(c) What is the capacitance?
pF

(d) Find the charge on each plate.
pC

How many grams of ethylene glycol (automobile antifreeze),C2H6O2 dissolved in 3.15kg of water is needed to lower the freezing point of water in an automobile radiator to 23.0 C?

a. What is the order forI₂? ______________________

b. What is the order foracetone? ___________________

c. What is the rateconstant (including units)? ____________________________

Calculate the weight in grams of ethylene glycol (antifreeze) that would be needed for an automobile radiator holding 3.5 gallons to keep the radiator solution from freezing until a temperature of -11.5 oF is reached?