Achild throws a penny straight down into a wishing well. the penny's initial speed is 2 m/s. if the penny takes 3 seconds to hit the water, how deep is the well?

Juan created a chart to him study for a test. which headings best complete the chart? x: transparent objects y: opaque objects x: opaque objects y: transparent objects x: high frequency waves y: low frequency waves x: low frequency waves y: high frequency waves

In which type of system is power held solely by the central government and not shared with regional governments? group of answer choices federal unitary confederate oligarchic

What causes the development of most clouds and precipitation in the atmosphere?