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6. An electric croswitch contains a thin strip of A633 steel and a thin strip of...
4. (20 points) (a) A steel strip is 30.004 cm long at room temperature (23'C). At...
4. (20 points) (a) A steel strip is 30.004 cm long at room temperature (23'C). At what temperature would it be exactly 30.000 cm long? 30.00? cm 83,? 30.000 Cm b) A piece of aluminum is welded onto the piece of steel (having the same length at room temperature) forming a bimetallic strip. Fully explain how the strip could function as a switch (making and breaking electrical connections) in a thermostat (drawing a picture could help your explanation)
Thin strips of brass and copper of equal length are used to construct a bimetallic strip....
Thin strips of brass and copper of equal length are used to construct a bimetallic strip. When the strip is heated, due to the difference in the coefficient of linear expansion of the two metals, the brass strip will have a greater increase in length than the copper strip, causing them to bend into an arc with the brass on the outside of the curve. When the temperature of s by 25.8 C, the angle subtended by the two ends...
A thin piece of 0.3mm thick hot-rolled strip of 1080 steel is heat-treated in the following...
A thin piece of 0.3mm thick hot-rolled strip of 1080 steel is heat-treated in the following way. Use the IT diagram for steel and other knowledge to determine the microstructure of the steel sample after the heat treatment. Heat Treatment: Heat for 1 hour at 860 oC ; cool in a molten salt bath at 260 oC and keep it in the bath for 1 minute then cool it in air, this results in a ______________ microstructure and this heat...
4- A steel strip of thickness 6-12 mm is annealed by passing it through a large fumace whose wall...
4- A steel strip of thickness 6-12 mm is annealed by passing it through a large fumace whose walls are maintained at a temperature Tw corresponding to that of combustion gases flowing through the fumace (Iw Tp). The stip, whose density, spcific thermal conductivity, and emissivity are 79 kg/m3, cp -640 J/kg K, k 30 W/m K and 0.7, respectively, is to be heated from 300°C to 600°C Furnace walls, Combustion gases For a unifom convection coefficient of h-100 W/m2...
A bimetal strip can be used as a thermometer and thermostat, a device that converts small...
A bimetal strip can be used as a thermometer and thermostat, a device that converts small changes in temperature to mechanical motion (see figure A below). A thermostat can be constructed by joining two pieces of metal, brass and steel, along their length as shown in figure B below. The brass and steel are both 60 cm long and 0.12 mm thick. If this bimetal strip is heated, the brass will expand more than the steel, causing the strip to...
A total charge Q is uniformly distributed along a thin flexible insulating strip of length L.
A total charge Q is uniformly distributed along a thin flexible insulating strip of length L. The strip is then bent into the semicircle shown in the figure (Figure 1) Part A Find a symbolic expression for the electric field E at the center of the semicircle Part B Compute the strength of this field if L = 16 cm and Q = 49 nC.
A total charge Q is uniformly distributed along a thin, flexible insulating strip of length L.
A total charge Q is uniformly distributed along a thin, flexible insulating strip of length L. The strip is then bent into the semicircle shown in the figure (Figure 1) Part AFind a symbolic expression for the electric field E at the center of the semicircle.Part B Compute the strength of this field if L=17 cm and Q=31 nC.
2. In Fig. 2-1, a current I fows through a thin strip of metal. The strip...
2. In Fig. 2-1, a current I fows through a thin strip of metal. The strip has a thickness a, widtlh b, and length c. We assume that there are n electrons with a charge of -q< 0) per unit volume and thcy all move with spccd v (1) Find the number of electrons passing through the strip in time t (a)nabct (d) nabvt (b)nalit (e) nbcvt (c)nc'vt (f)ncavt (2) Which of the following is the correct formula for the...
A 10-cm-long thin glass rod uniformly charged to 15.0 nC and a 10-cm-long thin plastic rod...
A 10-cm-long thin glass rod uniformly charged to 15.0 nC and a 10-cm-long thin plastic rod uniformly charged to - 15.0 nC are placed side by side, 3.80 cm apart. What are the electric field strengths E1 to E3 at distances 1.0 cm, 2.0 cm, and 3.0 cm from the glass rod along the line connecting the midpoints of the two rods? Specify the electric field strength E1 Specify the electric field strength E2 Specify the electric field strength E3
4. (20 points) (a) A steel strip is 30.004 cm long at room temperature (23'C). At what temperature would it be exactly 30.000 cm long? 30.00? cm 83,? 30.000 Cm b) A piece of aluminum is welded onto the piece of steel (having the same length at room temperature) forming a bimetallic strip. Fully explain how the strip could function as a switch (making and breaking electrical connections) in a thermostat (drawing a picture could help your explanation)
Thin strips of brass and copper of equal length are used to construct a bimetallic strip. When the strip is heated, due to the difference in the coefficient of linear expansion of the two metals, the brass strip will have a greater increase in length than the copper strip, causing them to bend into an arc with the brass on the outside of the curve. When the temperature of s by 25.8 C, the angle subtended by the two ends...
4- A steel strip of thickness 6-12 mm is annealed by passing it through a large fumace whose walls are maintained at a temperature Tw corresponding to that of combustion gases flowing through the fumace (Iw Tp). The stip, whose density, spcific thermal conductivity, and emissivity are 79 kg/m3, cp -640 J/kg K, k 30 W/m K and 0.7, respectively, is to be heated from 300°C to 600°C Furnace walls, Combustion gases For a unifom convection coefficient of h-100 W/m2...
A bimetal strip can be used as a thermometer and thermostat, a device that converts small changes in temperature to mechanical motion (see figure A below). A thermostat can be constructed by joining two pieces of metal, brass and steel, along their length as shown in figure B below. The brass and steel are both 60 cm long and 0.12 mm thick. If this bimetal strip is heated, the brass will expand more than the steel, causing the strip to...
2. In Fig. 2-1, a current I fows through a thin strip of metal. The strip has a thickness a, widtlh b, and length c. We assume that there are n electrons with a charge of -q< 0) per unit volume and thcy all move with spccd v (1) Find the number of electrons passing through the strip in time t (a)nabct (d) nabvt (b)nalit (e) nbcvt (c)nc'vt (f)ncavt (2) Which of the following is the correct formula for the...
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