The answer is D - explanation of nature
Answer:
Drop each ball from the platform three more times
Explanation:
Reliability or precision means how much the measured values vary from each other when measured by performing the same experiment repeatedly.
When measuring values by observation in physical experiments of this nature, it is best to perform the experiment and measure the values at least three times. The more the better.
In such measurements there is always a margin of error, e.g how at exact time you start and stop the stop-watch. There may also be a but harder or softer side of ball (tennis ball strip) touching the ground. In order to minimize such and some other margin of errors, it is advisable to measure the values more than 3-4 times, and then take their mean. The value now obtained would be would reliable or precise.
Second and third options are incorrect because they will have no effect on improving the reliability.
In order for the fourth option to be correct, the other people need to do the same (not similar) experiment, with the same balls and same conditions/instruments. That would be equivalent to repeating the experiment 3-4 times, which is already covered by first option.
Answer:
because acids are weak and bases are strongs
Explanation:
The statement given here is an example of : Paradox.
Explanation:
Paradox is when seemingly incomprehensible and diametrically opposite things are said together in tandem in a sentence to draw out a conflicting meaning out of it.
This is a clear example of paradox as in the given sentence we can see that there are two conflicts that are irreconcilable in any way.
The person who loses his life cannot find it because finding and losing one's life seems diametrically opposite yet the sentence does make sense in the sense of the rhetoric.
