Tungsten, W-181, is a radioactive isotope with a half life of 121 days. If a medical lab purchases 24 kg of W-181, how much will be left after 1 year? A) 24 kg B) 12 kg C) 6 kg D) 3 kg

When you boil potatoes, will your cooking time be reduced with vigorously boiling water instead of gently boiling water? (Directions for cooking spaghetti call for vigorously boiling water-not to lessen cooking time but to prevent something else.

What did the heliocentric and geocentric theories explain

What is an organelle that contains DNA?

How come that there is a presence of cos there?

What word means what scientists do that is the basis for their investigation

This particle is found in the nucleus and adds mass to the nucleus, but changing its number does not change what the element is. This particle is the A. proton. B. photon. C. neutron. D. electron.

Projectile motion is an example of what kind of motion

What can change scientific knowledge?

6. What is ductility?

During practice, a baseball player hits a very high fly ball, and then runs in a straight line and catches it. Which had the greatest displacement during the time period from the hitting of the ball to its catching