An astronomer records over several nights the change in position of Venus and then calculates that Venus orbits the Sun once every 110 Earth days. This figure is considerably lower than the 225 Earth-day orbit that is widely accepted for Venus. What should the astronomer do next?
O publish the findings to reveal the flaw in current orbital theories
o gather a new set of data and see if the results remain the same
add 115 days to the calculations to match the current published data
o form a hypothesis to explain how the orbit of Venus can vary so greatly

When someone slams her books on a table the kinect energy is transferred into vibrations that travel to your ears as sound waves which statement describes the movement of those waves

Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.1 m below the tank bottom which is a = 7.4 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute)

Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s.part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.