Why do we get headaches?

The passengers in a roller coaster car feel 50% heavier than their true weight as the car goes through a dip with a 10 m radius of curvature. What is the car's speed at the bottom of the dip?

How would the kinetic energy of a flywheel (a spinning disk) change if its rotational inertia was five times smaller but its angular speed was five times larger

Choose the statement that is a misconception about a system in chemical equilibrium. The rate of the forward reaction is equal to the rate of the backward reaction. The concentrations of the products and reactants don't change.

Tony made 14 liters of lemonade for a party. His guests drank 9500 mL of the lemonade. After the party Tony had mL of lemonade left over.

What is electromagnetic and explain

What is the one thing you can do to control the momentum your car carries in a potential crash?

Two charges q1 and q2, that are distance d apart, repel each other with a force of 6.40 N. what would be the force between two charges q1 and = 2q and q2=3q, that are distance d apart?

How fast would a particle be traveling relative to an experimenter in order to have a measured mass that is 20 times its rest mass?

A 4148-kg truck traveling with a velocity of 12 m/s due east collides head-on with a 898-kg car traveling with a velocity of 40 m/s due west. The two vehicles stick together after the collision.

The Coriolis effect