Physics, 13.12.2019 03:31 brillamontijo
27. if you throw a 1.0 kg ball straight up at 40 m/s off the ground, what is its velocity at the highest point? use
conservation of energy to determine how high does the ball go?
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Physics, 22.06.2019 18:00
What structural formula represents 4 electrons shared between two atoms?
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Physics, 22.06.2019 20:00
In an old-fashioned amusement park ride, passengers stand inside a 3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backs against the wall. the cylinder begins to rotate about a vertical axis. then the floor on which the passengers are standing suddenly drops away! if all goes well, the passengers will “stick” to the wall and not slide. clothing has a static coefficient of friction against steel in the range 0.60 to 1.0 and a kinetic coefficient in the range 0.40 to 0.70. part a what is the minimum rotational frequency, in rpm, for which the ride is safe? express your answer using two significant figures. f f = rpm
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Physics, 23.06.2019 04:31
The radioactive isotope of lead, pb-209, decays at a rate proportional to the amount present at time t and has a half-life of 3.3 hours. if 1 gram of this isotope is present initially, how long will it take for 80% of the lead to decay? (round your answer to two decimal places.)
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Physics, 23.06.2019 06:00
Atoms in a molecule are bonded together by sharing gaining or losing_
Answers: 1
27. if you throw a 1.0 kg ball straight up at 40 m/s off the ground, what is its velocity at the hig...
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