a coin is placed beneath a transparent block of thickness 10cm and refractive index 1.56. calculate the vertical displacement of the coin

What determines the amount of inertia an object has

Aplayer uses a hockey stick to push a puck at a constant velocity across the ice. the weight of the puck is 170 n. the coefficient of friction is 0.0600. with what force must the player push the puck so that his force just equals the frictional force? 28.3 n 0.999 n 0.102 n 0.0104 n

Why do some scientists and archeologists think that volta was not the first person to build a battery