30 points! Practice making careful observations. Choose something living to observe, either outdoors or indoors. If you’re observing your puppy playing in your backyard, you must not only record the puppy’s actions but the time of day, the weather, the sounds around you, who else is there, etc. All of these things are important, and should anything surprising happen, it becomes very helpful to have all the information.

An input force of 7 n is applied to a machine with a mechanical advantage of 1.75. what is the maximum the machine could lift? 12.25 n7n7.25 n26.2 n

Suppose that two tanks, 1 and 2, each with a large opening at the top, contain different liquids. a small hole is made in the side of each tank at the same depth 1.57 m below the liquid surface, but the hole in tank 2 has 2.49 times the cross-sectional area of the hole in tank 1. (a) what is the ratio ρ1/ρ2 of the densities of the liquids if the mass flow rate is the same for the two holes? (b) what is the ratio rv1/rv2 of the volume flow rates from the two tanks? (c) at one instant, the liquid in tank 1 is 14.9 cm above the hole. if the tanks are to have equal volume flow rates, what height above the hole must the liquid in tank 2 be just then?

Science and technology are interdependent. advances in one lead to advances in the other. give an example of this phenomenon.