Dynamite blast at a quarry launches
A dynamite blast at a quarry launches a rock straight upward, and 2.4 s later it is rising at a rate of 18 m/s. Assuming air resistance has no effect on the rock, calculate its speed (a) at launch and (b)5.7 s after launch
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Compare the colors of the aqueous solutions of metal ion in synthesis of potassium tris oxalato chromium iii trihydrate
An elastic cord is 60 cm long when a weight of 73 N hangs from it but is 90 cm long when a weight of 190 N hangs from it. What is the "spring" constant k of this elastic cord?
If 12.0 g of O2 is required to inflate a balloon to a certain size at 27 OC what mass of O2 is required to inflate it to the same size (and pressure) at 5.0 oC.
What is the pH of a buffer solution if 100.0 mL of the solution is 0.15 M with respect to acetic acid and contains 1.56 g of sodium acetate,& ; CH3COONa?
The dried sample of PbSO4 has a mass of 5.354 grams. What is the concentration of the unknown sulfuric acid solution?
The crankshaft in a race car goes from rest to 3000rpm in 2.0 seconds. What is the crankshafts angular acceleration?
Explain why a mixture of HCl and KCl does not function as a buffer, whereas a mixture of acetic acid (CH3COOH) and sodium acetate (CH3COONa) does.
One isotope has a mass of 96.780 amu. The second isotope has a percent abundance of 41.7%. What is the mass of the second isotope?
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