________ is the only planet with a mean density less than water
Fill in the blank(s) with correct word
Saturn
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Photography Optics: A 35-mm digital camera using a standard 50.0 mm lens is focused on a 1.80 m tall person who is standing 3.25 m from the lens. You now refocus the camera on a 15.0 cm tall flower that is 75.0 cm from the lens.(a) In refocusing, by how much did you move the lens? Did you move it toward the film or away from it?(b) What is the height of the flower's image on the CCD sensor?
What will be an ideal response?
Explain how it is possible that there are moons within habitable zones that have habitable surfaces in other solar systems given that no such thing exists in our own solar system
What will be an ideal response?
It takes ________ years for the sun to progress through one sunspot cycle, wherein sunspots appear at high latitudes, shift to lower and lower latitude, then return to high latitudes. Refer to the graph above
A) about 10 years B) about 110 years C) about 1 year D) This figure cannot be used to answer this question.
Mort, who is standing on the ground, throws a ball at 20 m/s eastward as measured by him. What is the ball's velocity relative to Velma, who is in a train moving eastward past Mort at 70 m/s?
A) 50 m/s eastward B) 90 m/s eastward C) 50 m/s westward D) 90 m/s westward E) 70 m/s westward