Why is it good practice for scientists to repeat trails

What are advantage of frictional force ?

Which is the oldest of the following sports A. Soccer B. Baseball C. Track and field D. Football

During a tug-of-war, team A pulls on team B by applying a force of 1390 N to the rope between them. How much work does team A do if they pull team B toward them a distance of 3.68 m

a fission reaction possible is that certain atoms are

What is charging by conduction. Can you also give an real life example of it.

Why did scientists choose carbon as a base for the atomic mass unit? Which isotope of carbon did they use?

What organelle is found in all animal cells and some plant cells

Basic of Archimedes's principle of how fluid can make body to float and sink.

A bullet is accelerated down the barrel of a gun by hot gases produced in the combustion of gun powder. What is the average force (in N) exerted on a 0.0500 kg bullet to accelerate it to a speed of 625 m/s in a time of 1.10 ms (milliseconds)

Your boss at the Cut-Rate Cuckoo Clock Company wants to save money on materials. You are asked to reduce the balance wheel, which is cylindrical, dimensions to one-third their original values.