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What is the overall charge of tyrosine (Tyr) at pH 12?
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A woman of mass 50 kg skis down a slope inclined at 45 degrees with respect to the horizontal. If the coefficient of kinetic friction between her skis and the snow is 0.2, what is the net force acting on the skier?
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A transformation takes a thermodynamic system from state A to state B, exchanging with the surrounding heat Q_1 = 250 kJ and work L_1 = 100 kJ. Another transformation brings the same system between the same initial and final states with heat exchange Q_2 = 100 kJ. What is the value of the work exchanged in the second transformation?
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A cyclist accelerates from rest to a final velocity of 20 m/s over a distance of 200 m with uniform acceleration. After reaching this final velocity, the cyclist maintains a constant speed for the next 100 m. The total time taken by the cyclist to cover the distance of 300 m3 is
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In a pot containing 2 L (which corresponds to about 2 kg) of boiling water (at 100°C, equivalent to 373 K), 1 kg of rice at 25°C (equivalent to 298 K) are immersed. What will be the temperature of the water after we have dipped the rice assuming that there is no heat loss and that the specific heat of rice is equal to that of water?
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