A3.689 g object is added to 7.29 ml of water causing the water level to rise to 8.54 ml. what is the density of the object?

Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife

When 13.3 g koh is dissolved in 102.7 g of water in a coffee-cup calorimeter, the temperature rises from 21.4 °c to 31.53 °c. what is the enthalpy change per gram of koh (j/g) dissolved in the water? * take the density of water as 1.00 g/ml. * assume that the solution has a specific heat capacity of 4.18 j/g*k. enter to 1 decimal place. do not forget the appropriate sign /(+). canvas may auto-delete the (+) sign

Ajet plane is speeding down the runway during takeoff. air resistance is not negligible. identify the forces on the jet.