4. At the top of a hill, a skater has a gravitational potential energy of 125J. What

is the total kinetic energy at the bottom of the hill of the skater if energy is

conserved?

Niels Bohr had a theory about the structure of an atom. Which part of his theory has been proven wrong? A. An atom is mostly empty space. B. Atoms are rearranged in chemical reactions. C. The nucleus is made up of protons and neutrons. D.

Satellite 1 revolves around a planet at the altitude equal to one-half the radius of the planet. The period of revolution of satellite 1 is.

How have moral and ethical issues influenced science

Describe a radio and its function

What is the potential energy of a one kilogram box of chocolates hidden on a shelf in the pantry 2 meters above the floor? a) 96.1 J b) 2 J c) 19.6 d) 9.8 J

A fully charged parallel-plate capacitor remains connected to a battery while a dielectric is slid between the plates. Do the following quantities increase, decrease, or stay the same? Select one or more: a. delta V increases b.

Energy is observed in two basic forms: potential and kinetic. Which of the following correctly matches these forms with a source of energy? a. the heat released from a living organism: potential energy b.

What should you do when operating a boat in large waves and high wind?

A planetary nebula forms when the outer layers are expelled from which type of star?

During a medical condition screening lung capacity testing is a standard procedure. True of false