Homework Answers
Decrease in internal energy of battery = m × g × h
= 5 × 9.8 × 0.4 = 19.6 joule
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First Law of Thermodynamics * - An electric motor powered by a battery lifts 5.00 kg...
15a. [1 mark) A girl rides a bicycle that is powered by an electric motor. A...
15a. [1 mark ]A girl rides a bicycle that is powered by an electric motor. A battery transfers energy to the electric motor. The emf of the battery is 16 V and it can deliver a charge of 43 kC when discharging completely from a full charge.The maximum speed of the girl on a horizontal road is 7.0 m s' with energy from the battery alone. The maximum distance that the girl can travel under these conditions is 20 km.Show...
The first law of thermodynamics D. The cylinder, with the piston still locked in place, is...
The first law of thermodynamics D. The cylinder, with the piston still locked in place, is now immersed in a mixture of ice and water and allowed to come to thermal equilibrium with the mixture. The piston is then moved inward very slowly. in such a way that the gas is always in thermal equilibrium with the ice-water mixture. We will refer to this slow compression of the gas as process 3. 1. During process 3, do the following quantities...
First Law of Thermodynamics *** A non-ideal gas goes through the cycle ABCA (shown in the...
First Law of Thermodynamics *** A non-ideal gas goes through the cycle ABCA (shown in the figure below). If 7950 J of heat is added to the gas in the process AB and 1750 J of heat is removed in BC, how much heat is added in the process CA? P, 105 N/m2 2.00 1.00 -------- -V, 10-2 m3 3.00 1.00 2.00 Find the heat added during CA, enter a negative number if heat is removed. (Enter your answer to...
The first law of thermodynamics In thermal physics, we are often interested in the internal energy...
The first law of thermodynamics In thermal physics, we are often interested in the internal energy (E) of a system. The wo 41 internal energy of an ideal gas is proportional to the temperature and the number of moles of the gas. The internal energy can change when energy is exchanged with the system's environment (ie., objects that are outside the system of interest). The case above is one in which the internal energy of a gas changes due to...
A spring with k=130.0 N/m on surface is mounted to a vertical wall. A 5.00-kg box...
A spring with k=130.0 N/m on surface is mounted to a vertical wall. A 5.00-kg box on the surface is placed in front of the spring. The coefficient of kinetic friction between the box and the surface is ylik = 0.400. A constant force F is applied to the box. F has magnitude 89.0 N and is directed against the wall. The spring is compressed 80.0 cm. Problem 5 Express your answer with the appropriate units. A spring with k=130.0...
1. What is the emf of a battery that increases the electric potential energy of 0.050...
1. What is the emf of a battery that increases the electric potential energy of 0.050 C of charge by 0.60 J as it moves from the negative to the positive terminal? 2 .A thermistor is a device whose resistance varies with temperature. At 20∘C a thermistor's resistance is 10.0 kΩ. When connected to a 1.2 V battery, the current through the thermistor increases by 20 μA as the temperature increases to 30∘C. What is the thermistor's resistance at this...
Problem with data for try #2: A proton moves 2.00 cm parallel to a uniform electric...
Problem with data for try #2: A proton moves 2.00 cm parallel to a uniform electric field of 277 V/m. What potential difference did the proton move through? (Enter the absolute value of AV.) Defined symbols: E electric filed in V/m d distance the proton moves in m The answer is DeltaV potential difference in V Hints: The connection between work and electric potential is important. Remember that for a uniform force (your forces will always be uniform) W-Fd. The...
M Review Constants In the circuit shown in the figure (Figure 1), the 6.0 2 resistor...
M Review Constants In the circuit shown in the figure (Figure 1), the 6.0 2 resistor is consuming energy at a rate of 27 J/s when the current through it flows as shown. Part A Find the current through the ammeter A. Express your answer with the appropriate units. LE UA ? 1 = Value Units Submit Request Answer Part B What are the polarity and emf of the battery E, assuming it has negligible internal resistance? Express your answer...
1. A 2.40 mH inductor is connected in series with a dc battery of negligible internal...
1. A 2.40 mH inductor is connected in series with a dc battery of negligible internal resistance, a 0.880 kΩ resistor, and an open switch. a. How long after the switch is closed will it take for the current in the circuit to reach half of its maximum value ? b. How long after the switch is closed will it take for the energy stored in the inductor to reach half of its maximum value? 2. A 4.75 μF capacitor...
Please answer all parts of the question 1st Law of Thermodynamics - Processes of Straight lines...
Please answer all parts of the question
1st Law of Thermodynamics - Processes of Straight lines on PV diagrams MIN B PtC -V -V The figures show the PV (pressure versus volume) graphs of two processes represented by straight lines The area under the curve equals the work. If volume V inceases (V,> V) in a process, work W is positive. If volume V deceases (V, < V) in a process, work W is negative. Case 1: In the left...
The first law of thermodynamics D. The cylinder, with the piston still locked in place, is now immersed in a mixture of ice and water and allowed to come to thermal equilibrium with the mixture. The piston is then moved inward very slowly. in such a way that the gas is always in thermal equilibrium with the ice-water mixture. We will refer to this slow compression of the gas as process 3. 1. During process 3, do the following quantities...
First Law of Thermodynamics *** A non-ideal gas goes through the cycle ABCA (shown in the figure below). If 7950 J of heat is added to the gas in the process AB and 1750 J of heat is removed in BC, how much heat is added in the process CA? P, 105 N/m2 2.00 1.00 -------- -V, 10-2 m3 3.00 1.00 2.00 Find the heat added during CA, enter a negative number if heat is removed. (Enter your answer to...
The first law of thermodynamics In thermal physics, we are often interested in the internal energy (E) of a system. The wo 41 internal energy of an ideal gas is proportional to the temperature and the number of moles of the gas. The internal energy can change when energy is exchanged with the system's environment (ie., objects that are outside the system of interest). The case above is one in which the internal energy of a gas changes due to...
A spring with k=130.0 N/m on surface is mounted to a vertical wall. A 5.00-kg box on the surface is placed in front of the spring. The coefficient of kinetic friction between the box and the surface is ylik = 0.400. A constant force F is applied to the box. F has magnitude 89.0 N and is directed against the wall. The spring is compressed 80.0 cm. Problem 5 Express your answer with the appropriate units. A spring with k=130.0...
Problem with data for try #2: A proton moves 2.00 cm parallel to a uniform electric field of 277 V/m. What potential difference did the proton move through? (Enter the absolute value of AV.) Defined symbols: E electric filed in V/m d distance the proton moves in m The answer is DeltaV potential difference in V Hints: The connection between work and electric potential is important. Remember that for a uniform force (your forces will always be uniform) W-Fd. The...
M Review Constants In the circuit shown in the figure (Figure 1), the 6.0 2 resistor is consuming energy at a rate of 27 J/s when the current through it flows as shown. Part A Find the current through the ammeter A. Express your answer with the appropriate units. LE UA ? 1 = Value Units Submit Request Answer Part B What are the polarity and emf of the battery E, assuming it has negligible internal resistance? Express your answer...
Please answer all parts of the question
1st Law of Thermodynamics - Processes of Straight lines on PV diagrams MIN B PtC -V -V The figures show the PV (pressure versus volume) graphs of two processes represented by straight lines The area under the curve equals the work. If volume V inceases (V,> V) in a process, work W is positive. If volume V deceases (V, < V) in a process, work W is negative. Case 1: In the left...
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