Identify each energy exchange as primarily heat or work and determine whether the sign of δe is positive or negative for the system. a rolling billiard ball collides with another billiard ball. the first billiard ball (defined as the system) stops rolling after the collision.

Which type of microscope would allow the viewer to see ribosomes inside a cell?

Initially, a particle is moving at 5.33 m/s at an angle of 37.9° above the horizontal. two seconds later, its velocity is 6.11 m/s at an angle of 54.2° below the horizontal. what was the particle's average acceleration during these 2.00 seconds in the x-direction (enter first) and the y-direction?

The respiratory system removes oxygen and water from the body. select the best answer from the choices provided t f