Human blood has a density of approximately 1.05×10'3 kg/m'3 .use this to estimate the difference in blood pressure between the brain and the feet in a person who is approximately 1.05 ×10'3. estimate the blood pressure between the brain and the feet in person who is approximately 6 feet tall

What is relative velocity? in which condition is relative velocity known by adding the velocity of the first body and that of the second body

Samir watches a 100-minute movie on his spaceship. maria's spaceshipe flies in the same direction as samir's spaceship but she observes his move to last 125 minutes and his spaceship to be 40 m long. how long does samir observe his own spaceship to be? according to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does marias voyage take according to samir?

Ideal meters problem. what internal resistance is ideal for a voltmeter? what internal resistance is ideal for an ammeter?