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A sled and rider with a combined weight of 60 kg are at rest on the top of a hill 12 m high.
(a) What is their total energy at the top of the hill?
(b) Assuming there is no friction, what would the total energy be on sliding halfway down the hill?
3. For an ideal rubber, (1) derive the rubber elasticity equations of stress versus extension ratio for a biaxial stress, i.e., find σx(λx,λy) and σy(λx,λy).
some gas is expelled from the bottle from the process. When P = P(external), the stopper is quickly replaced. The gas remaining in the bottle slowly warms up to 285K. what is the final pressure in the bottle for a monatomic gas for which C(v,m) = ..
the effect of temperature on gases confined to small volumes. What is the pressure of 3.40mol of gas D measured at 251 C in a 1.75-L container assuming real behavior?
Assume further that as the normal fruit flies die off quickly, a population of the resistant flies increases geometrically (that is, 1, 2, 4, 8 ...) If a new generation occurs every 62 days, in how many days will the fruit fly population be restor..
a solution containing ethylene glycol and water has a vapor pressure of 7.88 torr at 10oc. pure water has avapor
Write out a complete reaction mechanism for the synthesis of the 1,2-diphenyl-1,2-ethanediol acetal from 1,2-diphenyl-1,2-ethanediol and 2,2-dimethoxypropane in the presence of acid
An unknown mass of each of the following substances, initially at 22.0^circ C, absorbs 1950 J of heat. The final temperature is recorded as indicated. Find the mass of each substance. a. Pyrex glass (T_f=55.1^circ C. B.sand (T_f=62.3^circ C). C.et..
The rate constant of a first order reaction is 4.45 x 10^-2 s-1 at 35 degrees C. What is the rate constant at 77 degrees C if the activation energy for the reaction is 60.2 kJ/mol
Would you expect a Diels-Alder reaction between maleic anhydride and naphthalene to require more or less harsh conditions
It required 16ml of a sodium hydroxide solution titrated against a standard solution of 0.79g of potassium hydrogen phthalate in water to reach equivalence point. What is the molarity of the sodium hydroxide?
Disregarding any other losses and treating the animal as a closed system, what was the change in internal energy of the animal?
question an isotope of sodium 24na has a half-life of 15 hours. a sample of this isotope has mass 2 g.a find the
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