4. Equipotentials are lines along which A) the electric field is constant in magnitude and direction. B) the electric charge is constant in magnitude and direction. C) maximum work against electrical forces is required to move a charge at constant speed. D) a charge may be moved at constant speed without work against electrical forces.

Which of the following quantities are units of momentum? (there could be more than one correct choice.) a)n m b) kg s/m c) kg m/'s d)n-s 12 points] e) kg m2/s2

Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z

It is reasonable to assume that the bulk modulus of blood is about the same as that of water (2.2 gpa). as one goes deeper and deeper in the ocean, the pressure increases by 10000 pa for every meter below the surface. if a diver goes down 80.0 m in the ocean, by how much does each cubic centimeter of her blood change in volume? give the answer in cubic centimeters (actually one cubic centimeter equals one milliliter).