Galileo was the first scientist to do which of the following?

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant

This is important. 1. which of the following is an si base unit for measuring length? (2 points) inch gram meter mole 2. which of the following units for distance is an si unit? (2 points) centimeter foot inch yard 3. which of the following tools should a scientist use to measure an object in meters? (2 points) electronic balance pan balance tape measure thermometer

In science and physics what is the standard unit of measure for speed?