On a hot Saturday morning while people are working inside, the air conditioner keeps the temperature inside the building at 22°C. At noon the air conditioner is turned off, and the people go home. The temperature outside is a constant 34°C for the rest of the afternoon. If the time constant for the building is 4 hr, what will be the temperature inside the building at 3:00 P.M.? At 6:00 P.M.? When will the temperature inside the building reach 26°C?

Akira is running around a circular track. Akira runs counterclockwise. From where he starts, it takes him 22 seconds to reach the easternmost point of the track. It takes him 95 seconds to run one complete lap.Bob starts running at the same time as Akira. Bob starts from the northernmost point and runs clockwise. Bob and Akira pass each other for the first time after 26 seconds. How long does Bob take to run one lap of the track? The answer to this question should be the amount of time in seconds rounded to four decimal places that it takes for Bob to run a complete lap around the circular track.

The time required to complete a certain job varies inversely as the number of machines that work on the job. It takes 9 machines 72 hours to complete an order. Rounded to he nearest hour, how long will it take 13 machines to complete the same job.

A block with initial temperature of 65°F was put inside the oven with temperature of 350°F. After 10 minutes of being inside the oven, the block's temperature is 150°F. Find the answer for the following questions. 1) Find the temperature of the object after 30 minutes. 2) Find the time when the object reaches a temperature of 250°F.

On a mild Saturday morning while people are working inside, the furnace keeps the temperature inside the building at 22°C. At noon the furnace is turned off, and the people go home. The temperature outside is a constant 12°C for the rest of the afternoon. If the time constant for the building is 4 hr, when will the temperature inside the building reach 15°C? If some windows are left open and the time constant drops to 2 hr, when will the temperature inside reach 15°C? If the time constant for the building is 4 hr, the temperature inside the building will reach 15°C about (Round to the nearest tenth as needed.) hr after noon.