Astudent, starting from rest, slides down a water slide. on the way down, a kinetic frictional force (a nonconservative force) acts on her. the student has a mass of 76 kg, and the height of the water slide is 12.8 m. if the kinetic frictional force does -7.4 × 103 j of work, how fast is the student going at the bottom of the slide?

Apositive rod is placed to the left of sphere a, and the spheres are separated. which best describes the spheres? sphere a is negative and sphere b is positive because protons from sphere a are attracted to the rod and move to sphere b. sphere a is negative and sphere b is positive because electrons from sphere b are attracted to the rod and move to sphere a. sphere a is positive and sphere b is negative because electrons from the rod move to sphere b and protons then move to sphere a. sphere a is positive and sphere b is negative because protons move from sphere b to the rod and also to sphere a.

Do you agree with scientist’s prediction about the warming of alaska and other polar regions?

Arrange the images in order to show how lake-effect snow occurs.