Adog walking to the right at  1.5\,\dfrac{\text m}{\text s}1.5sm1, point, 5, space, start fraction, m, divided by, s, end fraction  spies a cat ahead, and begins chasing the cat with a constant acceleration of  12\,\dfrac{\text m}{\text s^2}12s2m12, space, start fraction, m, divided by, s, start superscript, 2, end superscript, end fraction.
what is the velocity of the dog after running for  3.0\,\text m3.0m3, point, 0, space, m?

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.

50 points to who answers this question in a clear and simple explanation : to what hight will a mass of weight of 500 n be raised in 20 seconds by a motor using 4kw of power?

5. why should the electrons be placed separate from each other (why not together)?