A boat with water has a constant net force pushing it forward but is gaining mass due to a heavy rain storm. Describe its velocity and acceleration. Mark all correct answers a) The acceleration is constant
b) The velocity is constant
c) The acceleration is increasing
d) The velocity is increasing
e) The acceleration is decreasing
f) The velocity is decreasing
g) I don't know

What are similarities and differences between refraction, reflection, diffraction and absorption?

Imagine that you have two balloons (or, better yet, actually inflate two balloons, if possible). create static electricity around one of the balloons by rubbing it against your hair or your sweater and then bring that balloon close to the other balloon, which has not been charged. try this with at least one other object—and for variety in the discussion, avoid using an object already described by your classmates. then, for your initial post to the discussion, answer the following questions: what happened with the two balloons?

At 20∘c, the hole in an aluminum ring is 2.800 cm in diameter. you need to slip this ring over a steel shaft that has a room-temperature diameter of 2.804 cm . 1. to what common temperature should the ring and the shaft be heated so that the ring will just fit onto the shaft? coefficients of linear thermal expansion of steel and aluminum are 12×10−6 k−1 and23×10−6 k−1 respectively.