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- Calculate the depth to which Avogadro's number of table tennis balls would cover Earth. Each ball has a diameter of 3.75 cm. Assume the space between balls adds an extra 25.0% to their volume and assume they are not crushed by their own weight.Must give answer then also give answer in significant fig format 10. One of the most deadly features of an erupting volcano is an avalanche of hot ash and gas called a pyroclastic flow. A pyroclastic flow can move at a speed of over 160 km/h and can have a temperature of 1,088 K. What is this temperature in degrees Fahrenheit and degrees Celsius?Please answer the question with steps … How much heat must be absorbed by ice of mass 378 gram to melt completely? Provide the answer in kJ with accuracy upto two decimal points. Consider the following: Specific Heat of ice as 2220 J/kg.K Heat of Fusion LF = 333 kJ/kg Heat of Vaporization Ly = 2256 kJ/kg
- Cars and aeroplanes are streamlined. Why?A graph of temperature versus time for a substance that has a mass of 2.00 kg is shown below. The sample is at a temperature of-10.0 degrees celsius and initially in the solid phase. Heat is added to the sample at a constant rate of 20.0 kj/minute. B& Care at a temperature of 119 degree Celsius. Answer the following questions: 1. What is the melting point of this substance? 2. What islare the phase/phases that exists/exist during the process from A to B and during the process from B to C? 3. Use the graph to calculate the specific heat for this substance in solid phase. 4.Use the graph to calculate the latent heat of fusion for this substance. Temperdture cc) B 120 + 100 80 60 40+ 20 + 12 4 6. 10 %3D 13 -20 Time (min) %3D F00#4. The rate of costing. of as dT dt where T = Q body fig. below, can be expressed = -k (T- Ta) : temperature of the body (ĉ). Te = temperature of the surrounding medium (2) and k = 4 proportiona- 2ty constant (per minste). Thus, this equation (Called Newton's law of Cooling) specifies that the vate of cooling is proportional to the difference in the temperature of the body and of the surrounding medium. a metal ball heated to 80 °C is dropped into water that is held constant at Ta = 20°C, the temperature of the ball changes. as in Time, min 0 5 10 15 20 25 T₁ °C 80 44.5 30.0 2411 21.7 2017 wtilize numerical differentiation to determine dI at each Value of time. plot dI Versus T-Ta and dt employ linear regression to ellalvate k. dt
