A uniform free rectangular steel plate is heated from 273 to 373 kelvin. The initial area of the plate is 15 sq. cm. What is the shift of the centre of mass? a)0 cm b) 1 cm c) 2 cm d) 3 cm
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A uniform free rectangular steel plate is heated from 273 to 373 kelvin. The initial area of the plate is 15 sq. cm. What is the shift of the centre of mass?
a)0 cm
b) 1 cm
c) 2 cm
d) 3 cm
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- The brass bar and the aluminum bar in the drawing are each attached to an immovable wall. At 27.3 °C the air gap between the rods is 1.61 x 103 m. At what temperature will the gap be closed? Number i Units Brass 2.0 m- Aluminum 1.0 mOn a graph, Tinº F vs Tin°C what is the meaning of the slope? A) How many degrees Fahrenheit there are in 1 degree Celsius. B) How many degrees Celsius there are in 1 degree Fahrenheit9.00 kg of ice at -4.30°C is added to a cooler holding 30 liters of water at 20.0°C. What is the temperature of the water when it comes to equilibrium?
- Week 4 #17 A copper bar of thermal conductivity 401 W/(m·K) has one end at 114°C and the other end at 24.0°C. The length of the bar is 0.110 m, and the cross-sectional area is 1.00 × 10−6 m2. What is the rate of heat conduction ? along the bar? _______WGiven two metal strips with the same initial length, steel and aluminum. When heated in the same way, whic metal will expand more? a steel = 1.2 x 10-5 °C-1 a aluminum = 2.3 x 10-5 °C-1 Aluminum They will both expand by the same amount Cannot be determined, not enough information O SteelYou add 100.0 g of water at 50.1 °C to 100.0 g of ice at 0.00 °C. Some of the ice melts and cools the water to 0.00 °C. When the ice and water mixture reaches thermal equilibrium at 0 °C, how much ice has melted?
- To treat a burn on his hand, a person decides to place an ice cube on the burned skin. The mass of the ice cube is 16.8 g, and its initial temperature is -10.7 °C. The water resulting from the melted ice reaches the temperature of his skin, 29.4 'C. How much heat is absorbed by the ice cube and resulting water? Assume that all of the water remains in the hand. Constants for water can be found in this table.A spherical steel ball bearing has a diameter of 2.540 cm at 23.00C (Assume the coefficient of linear expansion for steel is 11 x 10(°C)-1) (a) What is its diameter when its temperature is raised to 120.0°C? (Give your answer to at least four significant figures.) x Your response differs from the correct answer by more than 10% Double check your calculations. cm (b) What temperature change is required to increase its volume by 0.900%7 "CWhat is the mass of the helium in the blimp? =_____kg?
- The temperature of a 5.00-kg lead brick is increased by 525 C°. If the specific heat capacity of lead is 128 J/(kg.C°), what is the increase in the mass of the lead brick when it has reached its final temperature? O 5.80 × 10- -11 kg O 9.12 × 10-11 kg O 1.60 × 10-12 kg O 3.73 × 10-12 kg O 2.80 × 10-12 kgAL = a AT Activity 2 = BAT %3D Schmedrick takes his dune buggy to the gas station and fills it the very brim. His tank is a steel cylinder of radius 23 cm and height 45 cm (big enough to hold about 20 gallons). He burns a liter of gas getting to the beach, where both the tank and the gas heat up by 20 °C. Both the tank and the gas expand. For steel a = 1.1· 10$/°C. For gasoline B = 9.6- 104/°C. Does the tank overflow? 1. Use the linear expansion formula to calculate the increase in radius of the tank: up to Hints. 5.06 · 103 cm 2. Use the linear expansion formula to calculate the increase in height of the tank: 9.9 ·103 cm 3. For a cylinder, V = ar?h. Calculate the increase in volume of the tank: 4. Calculate the volume of gasoline at the beach before expansion. (1 cm³ = 1 mL): 73 785.613 cm³ 5. Use the volume expansion formula to calculate the increase in volume of the gasoline: 1416.684 cm³ 6. Conclusion: Schmed will be kicked out for spilling gas at the beach! %3D 49.3694 cm³At a temperature of 22.00°C the hole in a steel plate has a diameter of 1.040 cm. If a steel rod with a diameter of 1.049 cm has to just slip through this hole, to what temperature should the plate be heated? The coefficient of area expansion of steel is 24 ✕ 10−6/°C. ________________________ °C