There is a force between two charges; if the distance between the two charges is doubled, by what factor does the force between them change?

One atom of iron contains 26 protons, 30 neutrons, and 26 electrons. Which of the following would be possible for another atom of iron? A. 25 protons, 30 neutrons, 26 electrons B. 26 protons, 28 neutrons, 26 electrons C.

Characteristics we use to tell the differences between kinds of matter pare called _ properties

A steel piano string of mass per unit lenght 4*10-⁴kgm-¹ was struck, if the speed of the sound on the string is 300ms-¹. Calculate the tension ...

What is the difference between weathering, erosion, and decomposition?

A rock weighs 30 n on earth and another rock weighs 30 n on the moon. which rock has the greater mass?

Explain the work-energy theorem, including the direction energy moves and how it relates to positive and negative work

The passing of heat through a material while the material itself stays in place. A. radiation B. conduction C. convection

What would result from under-coverage? A. a lack of accurate result B. an incorrect independent variable C. an experiment D. accurate result

What can be said about the force of gravity acting on an object that is floating stationary underwater and not moving up or down? A. The buoyant force equals the force of gravity, so there is no net force. B.

A frog in a hemispherical pod finds that he just floatswithout sinking in a fluid of density 1.25 g/cm3. If the pod has a radius of3.00 cm and negligible mass, what isthe mass of the frog?