CHEGG Calculate the minimum amount of work (in J) required for your heart to pump one 1 liter of blood from your heart to your head, a distance of 0.400 m. Assume a blood density of 1.08 g/cm3.

Standing side by side ,you and a friend step off a bridge at different times and fall for 1.6s to the water below.your friend goes first,and you follow after he has dropped a distance of 2.0m.when your friend hits the water,is the seperation between the two of you 2.0m or more than 2.0m? verify your answer with a calculation.

The average density of the planet uranus is 1.27 103 kg/m3. the ratio of the mass of neptune to that of uranus is 1.19. the ratio of the radius of neptune to that of uranus is 0.969. find the average density of neptune.

Which changes would result in a decrease in the gravitational force btween two objects? check all that apply