Physics, 22.07.2019 07:30 kimberly185
Along stairway with a metal handrail runs between the houses of amelia and her friend michelle. after getting their parents' permission, the two girls often play near the stairs. one day, michelle stands at the top of the steps and taps the railing with a stone. amelia stands at the bottom of the steps with her right ear pressed against the railing. amelia sees michelle tap the railing, then she hears the sound with the ear that is pressed against the railing. last, amelia hears the sound with her other ear. why did amelia hear the sound with her right ear before her left ear?
Answers: 1
Physics, 21.06.2019 14:00
Under normal temperature and pressure conditions, what type of rock could be formed from weathering in erosion of metamorphic rock
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Physics, 22.06.2019 04:30
Which of the following are not typically included in the periodic table? a. atomic mass b. element symbol c. isotopes d. number of electrons
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Physics, 22.06.2019 05:00
Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct
Answers: 1
Physics, 22.06.2019 10:30
You are driving directly behind a pickup truck, going at the same speed as the truck. a crate falls from the bed of the truck to the road. (a) will your car hit the crate before the crate hits the road if you neither brake nor swerve? (b) during the fall, is the horizontal speed of the crate more than, less than, or the same as that of the truck?
Answers: 2
Along stairway with a metal handrail runs between the houses of amelia and her friend michelle. afte...
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