3) a cylindrical water tank has a radius of r = 1 m and a hole with radius r = 2 mm cut in the wall a depth d = 1 m below the surface of the water. (i) right as the water begins to flow from the tank through the hole, at what rate does the tank’s water level in units of mm/minute drop? first find an expression in terms of r, r, d, and g. then substitute numbers. you should find 1.06 mm/minute. (ii) find a similar expression in terms of r, r, d and g for the exit velocity of the water from the hole. substitute numbers to find 4.4 m/s. (iii) how would the answers to parts (i) and (ii) change if the tank were filled with mercury, which is much denser than water? give a conceptual/physical argument for why your answer makes sense.

The diagram shows a person using a piece of gym equipment to lift weight which best describe the body in terms of simple machine

During takeoff, the sound intensity level of a jet engine is 170db at a distance of 34 m. what's the sound intensity level at a distance of 1.0 km?

A3.9 g aluminum foil ball with a charge of +4.1×10−9 c is suspended on a string in a uniform horizontal e⃗ field. the string deviates to the right and makes an angle of 30∘ with the vertical. part a part complete what information about the e⃗ field can you determine for this situation? what information about the field can you determine for this situation? only the magnitude of e⃗ only the direction of e⃗ both the magnitude and the direction of e⃗ none of the above previous answers correct part b determine the magnitude of the electric field. express your answer with the appropriate units. e e = nothing nothing request answer part c determine the direction of the electric field. determine the direction of the electric field. to the right to the left away from you toward you