In the late 80s, astronomers discovered stars even cooler than M stars, which previously were the coolest spectral type. Astronomers have these cool stars a new spectral type, L. If you wanted to go out and find more such type L stars, what kind of instrument should you use

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