The length of second hand of clock is 14cm, an ant sits on the top of second hand. find the following i) speed of ant
ii) distance covered by ant in 150 seconds
iii) displacement in 150 seconds

Aphysical change is a change in the size, shape,, or stafe of matter true or false

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

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.