A student plans to investigate how different factors affect the dissolving rate of a certain mass of potassium chloride (KCl) in water. The student will test a different variable in each investigation: the diameter of the crystals in millimeters (mm); the temperature of the solution in degrees Celsius (oC), and agitation (stirring) of the solution. The given table shows details and predictions for investigation 1. Based on the predicted dissolving times for trials 1, 3, and 4, and your understanding of the solution process, which statement contains the BEST prediction for the dissolving time in trial 2?

hey , the answer is c

answer: the exterior temperature of commercial jet planes as they leave the stratosphere and return to the ground increases steadily.

explanation:

the lower most layer of atmosphere is troposphere which extends from 0 to 12 km above the surface of the earth. the temperature initially decreases as distance is increased from the earth's surface. commercial jets fly in lower part of the stratosphere. the stratosphere extends upto 50 km. the temperature in stratosphere starts rising again due to presence of ozone which traps the uv rays.

thus, when the planes leave the stratosphere and return to the ground, the exterior temperature increases steadily.

5 w for 1hr = 5x60x60 joules=300x60=3000x6=18,000j as total energy conversion. efficiency of bulb needed for radiant to thermal within 18000