Two positively charged objects are located so they are 0.20 m apart. If the objects are separated until their centres are 0.40 m apart, by what factor will the electrostatic force between them change?

How could you increase the number of snowmen destroyed by the sled sliding down the hill? SledAQ1 A. Increase the starting height of the sled. B. Increase the mass of the sled. C. Increase the starting kinetic energy of the sled. D. All of the above.

Which statement best describes the difference (s) between atoms and molecules? Atoms are the most basic units of an element whereas molecules are atoms that are chemically bonded together.

Suppose that a pane of crown glass, with a refractive index of 1.52, is immersed in water, which has a refractive index of 1.33. A ray of light traveling in the water strikes the glass at 45° relative to the normal and travels through the pane.

what if i have a negatively charged plastic rod near a tiny piece of paper that is resting on a tabletop. Will the paper be attracted or repelled?

The atomic number of an element X is 30 and the mass number is 65. Find the number of protons, neutrons, and electrons in an atom of element X.

What does deltaX mean in physics?

Which activity involves using fossil fuels directly or indirectly? 1) eating fresh fruit for a snack 2) cooking hot dogs on a campfire 3) using crayons to color 4) walking to school

Which of the following objects would have the most inertia? A. A sphere with a radius of 5 cm and a mass of 34 grams. B. A sphere with a radius of 4 cm and a mass of 15 grams. C. A sphere with a radius of 8 cm and a mass of 27 grams. D.

A boy slides a book across the floor using a force of five and over a distance of 2M what is the kinetic energy of the book after he slides at assume there is no friction

Where would aliens be if they really do exist here on Earth?