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If the temperature of an object goes from 900 K to 9000 K, By what factor is its energy emitted per second increased?
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- If the air has a thermal energy of 4.5 x 10 J, what is the air temperature ?If 500 J of thermal energy was gained by the water in a calorimeter and there are no losses, how much did the temperature of the 1 kg object with a specific heat capacity of 500 change?If the temperature of an object goes from 500 K to 9500 K,(c) By what factor is its energy emitted per second increased?If the temperature of an object goes from 900 K to 9000 K,(d) By what factor is its energy emitted per second increased?
- An ice cube has a mass of 66 g and is initially at a temperature of 0°C . The ice cube is heated until 58.1 g has become water at 100°C and 7.9 g has become steam at 100°C. How much energy (in kJ) was transferred to the ice cube to accomplish the transformation?A heater transfers 2550000J to a cubic meter of wood if each cubic meter of wood has a mass of 1500 kg. How much does the temperature of cubic meter of wood rise by the effect of the given heat? *temperature of an object resembling a blackbody is raised from 10 K to 300 K. How much does the amount of energy it radiates increase?
- A metal at 150°C is placed in a cool room at 30°C. After 1 hour, the temperature of the metal dropped to half of its original temperature. How long would it take for the metal to drop its temperature to 1/4 of its original temperature?What is the relationship between the mass and the temperature of a substance when a specific amount of energy is added to the system?How much energy is needed to kick football of mass 500 grams with the velocity 72km/hr?
- At room temperature, an oxygen molecule with mass of 5.31x10^-26kg typically has a kinetic energy of about 6.21x10^-21J. How fast is it moving?An Aluminum rod is 20 cm long at 20 0C and has a mass of 350 g. If 10,000 J of thermal energy is added to the rod by heat, what is the change in the length of the rod in cm?How much heat is absorbed by 100 g of ice at -10⁰C to become water at 20⁰C?• Specific heat: Water (Ice) = 2,090 J/Kg•⁰C, Water (Liquid) = 4,186 J/Kg•⁰C• Latent heat of fusion (Water) = 3.33 x105 J/Kg( A. 4..38 X 10 ^ 4 B. 4.38 X 10 ^ 7 C. 4.76 X 10 ^ 5)
