Physics, 15.12.2021 06:20 mooredollie
A 4000 kg train car moving at 2.4 m/s collides with a second identical train car at rest. If they hook together when they collide, what is the final speed of the two?
Answers: 1
Physics, 21.06.2019 20:00
What happens to atoms and chemical bonds during a reaction?
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Physics, 21.06.2019 20:30
Asmall metal bar, whose initial temperature was 10Β° c, is dropped into a large container of boiling water. how long will it take the bar to reach 70Β° c if it is known that its temperature increases 2Β° during the first second? (the boiling temperature for water is 100Β° c. round your answer to one decimal place.) sec how long will it take the bar to reach 98Β° c? (round your answer to one decimal place.)
Answers: 2
Physics, 22.06.2019 03:50
The force acting on a beam was measured under the same operating conditions and a sample of 5 data points was collected. this process was repeated by 3 observers. the pooled standard deviations of these 3 data sets was 1.21. determine the true mean force using all pooled data (with a 95% probability). the result should look like this: true mean = mean +/- margin of error
Answers: 1
A 4000 kg train car moving at 2.4 m/s collides with a second identical train car at rest. If they ho...
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