Compare and contrast the average kinetic energy of 0.5 l of coffee at 34°c,
0.5 l of coffee at 38°c, and 0.25 l of tea at 43°c.

We put a force of 50n on an object and the acceleration is 100 m/s². what is the mass of the object?

The electric field direction is defined by the direction of the force felt by (select one of the following answers): 1. a negative charge. 2. a positive charge. 3. both positive and negative charges.

Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.