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- (II) Aluminum rod, α = 24 x10-6 (1/ ͦC )--- official valueLi = 185.0 cm, Lf = 185.81 cm, Ti = 20.0 °C, Tf = 200.0 °C Find α and % error.(I) Copper rod, α = 17 x10-6 (1/ ͦC )--- official value Li = 185.0 cm = 1.850 m, Ti = 20. 0 ͦC Lf = 185.51 cm = ________ m, Tf = 180. ͦC Find α and % error.I need help on this question? G=10m/s^2
- A granite ball of diameter 4.5 m and emissivity 0.455 is heated to 131°C. (a) What is the surface area of the ball? (b) If the ambient temperature is 25.0°C, what net power does the ball radiate?A 0.0856-m3 drum contains saturated water and saturated vapor at 370°C. (a) Find the mass of each if their volumes are equal. What is the quality? (b) Find the volume occupied by each if their masses are equal.The solar panels are placed in an optimal position such that they receive a solar power of 1186kWh/m^2 per year1. The average solar cell has an efficiency of 20% and an average household in the Netherlands uses 2990kWh of electricity per year. The average solar panel has dimensions of 165x99cm. How many solar panels do you need?
- A 250 mL Pyrex glass container is filled with gasoline at 50°C. How much gasoline is needed to fill the container again if it is cooled to 35°C.How much heat (in J) is needed to raise the temperature of 8 kg of copper from 32°C to 840°C? ___________ JA glass coffee pot has a 9.00 cm diameter circular bottom in contact with a heating element that keeps the coffee warm with a continuous 50.0-W heat input. (a) What is the temperature of the bottom of the pot, if it is 2.90 mm thick and the inside temperature is 67.8°C? The thermal conductivity of the pot is 0.84 J/(s · m · °C). *Answer in °C, please