A person wearing a seatbelt can survive a car crash if the acceleration is smaller than 30 gees assuming constant negative acceleration how much most the car is front and collapse if it crashes into a brick wall at 60 mph in the occupants are to survive

Oxygen and nutrients are moved through the body by the: a. circulatory system c. lymphatic system b. digestive system d. reproductive system

Which one of the following research methods can show cause and effect

Large electric fields in cell membranes cause ions to move through the cell wall. the field strength in a typical membrane is 1.0 x 10 7 n/c. what is the magnitude of the force on a calcium ion with charge +e? what is its acceleration? is it possible for a particle with the same charge as as calcium to have a different acceleration if placed at this location? what would change the acceleration: mass of the particle? diameter of the particle?