A vat contains 120 l of a solution containing 8 kg of indigo. It is flushed out as follows: clean water is poured into the tank at a rate of 2 l/min; after one hour, the mixture is drained at a rate of 4 `/min, while clean water continues to pour in at 2 l/min. All flows are turned off when the fluid returns to its initial level. How much indigo is in the vat when the process is completed?

As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side so that they are parallel to each other. when you push the platform, you compress the springs. you do an amount of work of 79.0 j when you compress the springs a distance of 0.230 m from their uncompressed length. (a) what magnitude of force must you apply to hold the platform in this position? (b)how much additional work must you do to move the platform a distance 0.230 m farther? (c) what maximum force must you apply to move the platform a distance 0.230 m farther?

Dao makes a table to identify the variables used in the equations for centripetal acceleration. what quantities belong in cells x and y?

Increasing the pressure on one spot of a fluid will increase the pressure everywhere else in the fluid a. pascals principal b. archimedes' principal c. bernoulli's principal