What is the half life of a radioisotope if 25.0 grams of anoriginal 200.-gram sample of the isotope remainsunchanged after 11.46 days? 3) 11.46 d1) 2.87 d4) 34.38 d2) 3.82 d

Define a is a tiny pavket of energy

Why does a plastic bottle that is sealed at a high altitude change it’s shape when taken to lower altitude

Calculate the estimated density of each ball. use the formula d = m/v where d is the density, m is the mass, and v is the volume. record your calculations in table a of your student guide. given that the density of water is 1.0 g/cm3, make a prediction about whether each ball will float in water. record your prediction in table a. what is the estimated density of the table tennis ball? record your answer to the nearest hundredth