Atime-varying horizontal force f(t) = at 4 + bt 2 acts for 0.500 s on a 12.25-kg object, starting at time t = 1.00 s. in the si system, a has the numerical value 4.50 and b has the numerical value 8.75. (a) what are the si units of a and b? enter your answers separated by a c.
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Physics, 22.06.2019 09:50
Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.
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Physics, 22.06.2019 18:30
Two trains leave a station at the same time, train a travels at a constant speed of 16 m/s. train b starts at 8.0 m/s but accelerates constantly at 1.0 m/s squared. after 10.0 seconds, which train has the greater speed?
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Physics, 22.06.2019 20:10
Atruck with 34-in.-diameter wheels is traveling at 55 mi/h. find the angular speed of the wheels in rad/min, *hint convert miles to inches & hours to minutes:
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Researchers conducted an experiment to identify the effects of three different hand sanitizers on the growth of bacteria. the researchers grew one type of bacteria in twenty-four identical covered petri dishes. then, they opened eighteen petri dishes and applied the three hand sanitizers to six petri dishes each. they left the remaining six petri dishes closed as a control group. when the researchers measured the growth of bacteria two days later, the six dishes that had no hand sanitizer showed the least amount of bacterial growth. the researchers concluded that not using any hand sanitizer would lead to the least bacterial growth. which statement best explains why the researchers’ conclusion was not justified? the experiment tested too many variables. the control group was not treated the same as the experimental group. the sample size of twenty-four petri dishes is not large enough. the single type of bacteria is not adequate to make any conclusions.
Answers: 1
Atime-varying horizontal force f(t) = at 4 + bt 2 acts for 0.500 s on a 12.25-kg object, starting at...
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