Oscillation frequency of the two-block system
A block hangs in equilibrium from a vertical spring. When a second identical block is added, the original block sags by 7.00 cm.What is the oscillation frequency of the two-block system?
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50.0 g of KCl at 27.0 °C is dissolved in 100. mL of 27.0 °C water in a coffee cup calorimeter. What is the final temperature of the salt solution? Assume that the heat capacity of the solution is 4.184 J/g·°C
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Assuming the solution has a heat capacity of 4.18 J/°C·g and assuming no heat loss to the calorimeter, calculate the enthalpy change for the dissolution of NH4NO3 in units of kJ/mol.
What volume in mL will a sample of F2 occupy in a syringe at 5.5 atm , if the F2 has a volume of 25.0 mL at 1.2 atm?
An ac generator has a frequency of 2.4 kHz and a voltage of 240 V. An inductance L1 =6.0 mH is connected across its terminals. Then a second inductance L2 =10 mH is connected in parallel with L1. Find (a) the current that the generator delivers to
A buffer consists of 0.22 M Na2HPO4 and 0.2 M Na3PO4. Given that the K values for H3PO4 are, Ka1 = 7.2 x 10-3, Ka2 = 6.3 x 10-8, and Ka3 = 4.2 x 10-13, calculate the pH for this buffer.
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