Determine how much heat energy is required
How much heat energy is required to raise the temperature of 0.362kg of copper from 23.0C to 60.0C ? The specific heat of copper is 0.0920cal/(g*c) .
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A(n) 4.23 kg sphere makes a perfectly in-elastic collision with a second sphere that is initially at rest. The composite system moves with a speed equal to one-third the original speed of the 4.23 kg sphere. What is the mass of the second sphere?
A man involved in a traffic accident is rushed to the emergency room of a hospital with severe internal bleeding. Examination reveals a ruptured spleen.
At what rate (J/s) must the heater provide thermal energy to accomplish this, given that the density of water at 75 degrees fahrenheit is 0.997 g/mL?
At what temperature difference, does the heat capacity of the calorimeter becomes larger than 100. J/K? At what temperature difference, does the heat capacity become negative?
An airplane has a wing area (each wing) of 10 m^2. At a certain airspeed, air flows over the upper wing surface at 48 m/s and over the lower wing surface at 40 m/s. What is the mass of the plane? (The density of the air is 1.29 kg/m^3.)
A 27.0-g sample of ice at -13.0°C is mixed with 114.0 g of water at 80.0°C. Calculate the final temperature of the mixture assuming no heat loss to the surroundings. The heat capacities of H2O(s) and H2O(l) are 2.08 and 4.18 J/g · &
Calculate the mass in grams for a gold sample that absorbs 245 {rm J} to change its temperature from 20.0^circ C to 40.0^circ C
What is the minimum coefficient of friction between tires and road that will allow cars to take the turn without sliding off the road? (Assume the cars do not have negative lift.)
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