Newton''s law of cooling
A container of hot water at 80 C cools to 79 C in 15 seconds when it is placed in a room that is at 20 C. Use Newton's law of cooling.
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The bullet passes through the block and emerges with its speed reduced to 100 m/s. The block slides a distance of 0.10 m along the surface from its initial position. (a) What is the coefficient of kinetic friction between block and surface?
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A cylindrical container 1.7 {rm m} tall contains mercury to a certain depth, d. The rest of the cylinder is filled with water. If the pressure at the bottom of the cylinder is two atmospheres, what is the depth d?
A soccer ball of diameter 32.0 cm rolls without slipping at a linear speed of 2.73 m/s. Through how many revolutions has the soccer ball turned as it moves a linear distance of 19.4 m?
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The work function of an element is the energy required to remove an electron from the surface of the solid element. What is the maximum wavelength of light that can remove an electron from an atom on the surface of lithium metal?
What were some of the things we learned to improve intuition? How do those techniques compare to the ones use to to avoid the various phycological traps?
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