Hmm life sucks an i hate it *sighs*

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

14. many depressants reduce small muscle control, making it harder for a. you to steer b. your mind to consider complex problems c. the eye to scan, focus, or stay still d. the kidneys to filter alcohol out of the bloodstream

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.