Homework Answers
a) right.
Conduction is transfer of energy from by interaction between particles. Conduction is due to the collision of the molecules during their random motion .
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In conduction, thermal energy is transferred by collisions between particles. a. cu o b. ܓܵܘܐܐ O
Which is the transfer of thermal energy through direct contact of particles? التوصيل conduction الإشعاع radiation...
Which is the transfer of thermal energy through direct contact of particles? التوصيل conduction الإشعاع radiation الحمل convection الحرارة النوعية specific heat A 2.0 kg block of aluminum (specific heat = 897 J/kg-K) is at an initial temperature of 300 K. What will its final temperature be if (3.35 x 105])of thermal energy is added? Gution Type Question Outine Analysis Answer Option 1 474 K 174 K 803 K 487 K
When two objects are in thermal contact heat energy is transferred from the hot to the...
When two objects are in thermal contact heat energy is transferred from the hot to the cold object until the temperature of both becomes equal (i.e., the objects are in thermal equilibrium). Suppose you pour 20-gram milk at 200C into a cup of 80-gram tea at 920C. Assume the specific heat of tea is 4.2 J/gram.0K and that of milk is 3.9 J/gram.0K Assuming no heat is lost into the surrounding air what is the temperature of the tea and...
1) The amount of energy transferred between two objects is considered a. heat b. specific heat...
1) The amount of energy transferred between two objects is considered a. heat b. specific heat c. thermal energy d. temperature 2) Temperature of land rises more quickly than that of the sea because ? a. soil is solid whereas water is liquid b. specific heat of soil is higher c. specific heat of soul is lower than that of water
The Brownian Motion of very small particles suspended in a gas is caused by: A. Collisions...
The Brownian Motion of very small particles suspended in a gas is caused by: A. Collisions between the particles and gas molecules B. Attraction between atoms of the same kind C. The influence of Earths gravitational field D. Repulsion between protons and electrons E. The influence of Earths magnetic field
How much thermal energy is transferred to the system
A diatomic ideal gas expands from a volume of \(v_{A=100 m^{3}}\) to \(v_{B=300 m^{3}}\) along the path shown in the figure below. The initial pressure is \(_{P_{A}=200 x+10^{5} p_{2}}\) and there are \(73.4\) mol of gas.(a) Calculate the work done on the gas during this process.(b) Calculate the change in temperature of the gas.(c) Calculate the change in internal energy of the gas. (Take the molar specific heat of a diatomic gas for this process to be \(C_{p}=\frac{7}{2} R\)(d) How...
Part A What is the general direction of the flow of thermal energy? O Thermal energy...
Part A What is the general direction of the flow of thermal energy? O Thermal energy flows from a cold region toward a hotter region O Thermal energy flows from a hot region toward a cooler region. Submit Part B What is the name of that flow? Essay answers are limited to about 500 words (3800 characters maximum, including spaces). 3800 Character(s) remaining Submit Provide Feedback
Conduction band Energy gap, Valence band The energy gap between the valence band and the conduction...
Conduction band Energy gap, Valence band The energy gap between the valence band and the conduction band in the widely-used semiconductor gallium arsenide (GaAs) is A - 1.424 eV. Suppose that we consider a small piece of GaAs with 1020 available electrons, and use the equilibrium condition derived in the prelecture. 1) On average, how many electrons will be in the conduction band if T-282.15 K? electrons Submit 2) How many holes (the white dots in the figure) will be...
1) The thermal energy decrease in the soda is equal to the energy transferred from the...
1) The thermal energy decrease in the soda is equal to the energy transferred from the soda to the heat pump. (T/F) ? 2) The energy input to the heat pump from the power plant is equal to the energy output from the heat pump to the surroundings due to heat interactions. (T/F) ? 3) The sum of the energy inputs to the heat pump from the power plant and from the cooling soda in the fridge is equal to...
2. System of particles obey M-B statistics in thermal equilibrium with its enviroment at temprature T....
2. System of particles obey M-B statistics in thermal equilibrium with its enviroment at temprature T. the percent of occupation of energy levels is given at the table. Energy in ev Energy level propapility percent 0.002 60% 0.011 20% 0.020 8.0% 0.030 1.9% (i) Calculate the temperature of the system. If the vibrationally excited states of nitrogen molecule is given by &, =(n +) @ where n;= 0, 1, 2,..., the differences between anytwo levels is given by ) w=0.5...
What type of molecular-level collisions result in products? Group of answer choices: A) High-energy collisions B)...
What type of molecular-level collisions result in products? Group of answer choices: A) High-energy collisions B) High-energy, high-temperature collisions C) None of the above D) Low-energy, directed collisions
Which is the transfer of thermal energy through direct contact of particles? التوصيل conduction الإشعاع radiation الحمل convection الحرارة النوعية specific heat A 2.0 kg block of aluminum (specific heat = 897 J/kg-K) is at an initial temperature of 300 K. What will its final temperature be if (3.35 x 105])of thermal energy is added? Gution Type Question Outine Analysis Answer Option 1 474 K 174 K 803 K 487 K
A diatomic ideal gas expands from a volume of \(v_{A=100 m^{3}}\) to \(v_{B=300 m^{3}}\) along the path shown in the figure below. The initial pressure is \(_{P_{A}=200 x+10^{5} p_{2}}\) and there are \(73.4\) mol of gas.(a) Calculate the work done on the gas during this process.(b) Calculate the change in temperature of the gas.(c) Calculate the change in internal energy of the gas. (Take the molar specific heat of a diatomic gas for this process to be \(C_{p}=\frac{7}{2} R\)(d) How...
Part A What is the general direction of the flow of thermal energy? O Thermal energy flows from a cold region toward a hotter region O Thermal energy flows from a hot region toward a cooler region. Submit Part B What is the name of that flow? Essay answers are limited to about 500 words (3800 characters maximum, including spaces). 3800 Character(s) remaining Submit Provide Feedback
Conduction band Energy gap, Valence band The energy gap between the valence band and the conduction band in the widely-used semiconductor gallium arsenide (GaAs) is A - 1.424 eV. Suppose that we consider a small piece of GaAs with 1020 available electrons, and use the equilibrium condition derived in the prelecture. 1) On average, how many electrons will be in the conduction band if T-282.15 K? electrons Submit 2) How many holes (the white dots in the figure) will be...
2. System of particles obey M-B statistics in thermal equilibrium with its enviroment at temprature T. the percent of occupation of energy levels is given at the table. Energy in ev Energy level propapility percent 0.002 60% 0.011 20% 0.020 8.0% 0.030 1.9% (i) Calculate the temperature of the system. If the vibrationally excited states of nitrogen molecule is given by &, =(n +) @ where n;= 0, 1, 2,..., the differences between anytwo levels is given by ) w=0.5...
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[OH−] = 1.9×10−7 M
[OH−] = 1.6×10−8 M
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