a researcher has 15 pure bred wild mince which were brown and all were females. they were all mated with a male called bob .all the offspring were brown . these were then crossed among themselves with the following results: 293 brown and 115 white. use the punnett square to determine the colour of the bob

It depends on the surface of the levels. the rougher the surface, the greater is the frictional force. for rougher surfaces, you would need to exert greater force to move the object. the concept is that, you must overcome the frictional force in order to bring the object into motion. this is the reason why we add lubricants to the joints so they could easily move. this answer was on