An insulated thermos contains 140 cm3 of hot coffee at 85.0°c. you put in a 15.0 g ice cube at its melting point to cool the coffee. by how many degrees has your coffee cooled once the ice has melted and equilibrium is reached? treat the coffee as though it were pure water and neglect energy exchanges with the environment. the specific heat of water is 4186 j/kg·k. the latent heat of fusion is 333 kj/kg. the density of water is 1.00 g/cm3.

Consider a resistor with color code “orange blue brown gold” and a measured value of 370 ω. determine the following: nominal value, tolerance, % error, and the probability of another resistor from the same manufacturing batch having a value closer to nominal than this one. use matlab or excel to evaluate the erf function.

Abatter hits the baseball a with an initial velocity of v0 = 110 ft/sec directly toward fielder b at an angle of 23° to the horizontal; the initial position of the ball is 2.2 ft above ground level. fielder b requires 0.44 sec to judge where the ball should be caught and begins moving to that position with constant speed. because of great experience, fielder b chooses his running speed so that he arrives at the “catch position” simultaneously with the baseball. the catch position is the field location at which the ball altitude is 8.4 ft. determine the velocity of the ball relative to the fielder at the instant the catch is made.

Organelles are 1. responsible for producing power for the cell 2. tiny structures in the cell that carry out the cell's activities 3. responsible for digestion in the cell 4. found outside of the membrane