Adairy farmer notices that a circular water trough near the barn has become rusty and now has a hole near the base. the hole is 0.19 m below the level of the water that is in the tank. if the top of the trough is open to the atmosphere, what is the speed of the water as it leaves the hole? assume that the trough is large enough that the velocity of the water at the top is zero. the acceleration of gravity is 9.81 m/s 2 . answer in units of m/s.

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?