Integrate eq. (1) to calculate how many seconds it will take a droplet to grow trom an initial diameter of 20 um to the diameter of a small drizzle droo. 0. mm. Use one significant figure in your answer. dD/dt=a/2D
Resistance of a resistor is modeled by the equation (1) Where R is the resistance (Ω), L is the length (m), A is the cross-sectional area (m2), and ρ is a constant dependent upon the material called the resistivity (Ω-m). The length, thickness and material of a wire affects the resistance of the wire. Some […]
A Analyze the sedimentary rocks in Fig. A6.3.1. Below each photograph, describe the rock briefly, using your observations of its apparent composition . texture , and anything else you notice that might help you to interpret the rock. Observations, fizzes in acid: mostly shells Observation: fizzes in acid Observations: does not fizz in acid; grains […]
A test is carried out to determine the overall heat transfer coefficient in a new automotive radiator that is a compact cross-flow water-to-air heat exchanger with both fluids (air and water) unmixed. The radiator has 40 tubes of internal diameter 5 mm and length 650 mm, in a closely spaced plate-finned matrix. Hot water enters […]
The temperature of a gas stream is to be measured by a thermocouple whose junction can be approximated to a 1·2 mm-diameter sphere. The properties of the junction are: J/kgK,320andkg/m8500, W/mK353pCk. The heat transfer coefficient between the junction and the gas is W/m²K65 h10. Determine how long it will take for the thermocouple to read […]
