balloon a and b have the same mass, but the density of a is lower than b. therefore, the buoyancy of a is greater than b when they are bothe in the same situation true or false

Which type of wave can travel without a medium

Carbon-14 is a radioactive element that undergoes beta decay. which force is responsible for allowing carbon-14 to become stable? electromagnetic gravitational weak nuclear strong nuclear

The diagram shows a boulder rolling down a hill into a valley and then up the opposite hill. at which position does the boulder have the greatest kinetic energy? a b c d