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- 7. YA 60° A = 10.0 30° B 30° 53° D 20.0 37° C = 12.0 10 F = 20.0 B = 5.01. solve the problem for 0 = 90° 4 in. 12 in. 2 11. +4 in.- E B 8 in. }) 60 Ib FThe two charges in Figure P16.12 are separated by d = 2.00 cm. Find the electric potential at (a) point A and (b) point B, which is halfway between the charges.
- An iron plate 2 cm thick has a cross-sectional area of 5000 cm2. One face is at 150oC, and the other is at 140oC. How much heat passes through the plate each? For iron, kT = 80 W/m · KYou add 135 kJ of heat to a block of metal with a mass of 5.0kg. The temperature of the metal rises from 18.0 ̊C to 36.0 ̊C. What is its specific heat? a) 1500 J/kg ̊C b) 1.5 J/kg ̊C c) 37500 J/kg ̊C d) 7500 J/kg ̊C e) 75 J/kg ̊C9. A quartz sphere is 14.0 cm in diameter. What will be its change in volume if it is heated from 64 °F to 255 °F? (the coefficient of volume expansion of quartz is 1.50 × 10-6 °C-1) cm³ ci16 cc
- If 31.0 g of milk at a temperature of 3.95°C is added to a 250-g cup of coffee at a temperature 88.5°C, what is the final temperature of the mixture? Assume coffee has a specific heat of 4.19 x 10° 1/(kg · K) and milk has a specific heat of 3.93 x 103 1/(kg · K). °CHow much heat would flow into an 80 cm x 40 cm x 3.0 mm glass window each hour on a day when the outside temperature is 103 F and inside temperature is 70 F? Kglass = 0.84 W/m-K. O 1.64x10³ J/s O 2.96x10² J/s O 1.64x10² J/s O 2.96x10³ J/sIf 29.0 g of milk at a temperature of 4.05°C is added to a 260-g cup of coffee at a temperature 91.0°C, what is the final temperature of the mixture? Assume coffee has a specific heat of 4.19 x 10° J/(kg · K) and milk has a specific heat of 3.93 x 10³ J/(kg · K). °C
- A 300 cm3 glass beaker at 20 oC is filled completely with liquid mercury also at 20 oC. If both the beaker and its contents are heated to 100oC, how much mercury will spil from the beaker? 1.24 cm3 3.72 cm3 4.15 cm3 6.23 cm3A 100 g glass container contains 250 g of water at 15.0 "C. A 70 g piece of unknown material at 100 °C is added to the water in the container. The final temperature of the mixture is 19.0 °C. What is the specific heat of the unknown material in J/kg "C? (specific heat of water = 4,186 J/kg "C, specific heat of glass=837.2 J/kg "C)Suppose you stand with one foot on ceramic flooring and one foot on a wool carpet, making contact over an area of 75.0cm2 with each foot. Both the ceramic and the carpet are 5.00 cm thick and are 12.0ºC on their bottom sides. At what rate must heat transfer occurs from each foot to keep the top of the ceramic and carpet at 38.0ºC? Pcarpet = Blank 1 Pceramic = Blank 2 Round your answers to the nearest 2 decimal places.