A crown that weighs 45.0 N in air weighs 30.0 N in water. What is the density of the crown? kg/L ... (round to one place - no decimal)

Select the correct answer from each drop-down menu. compared to its surroundings, the concentration of solutes is low inside a cell. so, the cell is with respect to its surroundings. a particular solute in this cell uses energy for its transport from the cell to its surroundings. this type of transport is called

An isotope undergoes radioactive decay by emitting radiation that has a –1 charge. what other characteristic does the radiation have?

Awave has a wavelength of 7 mm and a frequency of 19 hertz. what is its speed?