Two identical conducting spheres carry charges Q and 2 Q. When separated by a distance much larger than their diameters, the spheres exert an electrostatic force F on each other. The two spheres are brought into electrical contact and then returned to their original separation. The final electrostatic force between the spheres is.

The magnitude of the magnetic field at a certain distance from a long, straight conductor is represented by b. what is the magnitude of the magnetic field at twice the distance from the conductor? a. at twice the distance, the magnitude of the field is 4b. b. at twice the distance, the magnitude of the field is 2b. c. at twice the distance, the magnitude of the field is b/2.d. at twice the distance, the magnitude of the field is b/4.e. at twice the distance, the magnitude of the field remains equal to b.

How are elastic and inelastic collisions different? give two or more ways. your answer should have at least 2 sentences.

If 50 ml of each of the liquids in the answer choices were poured into a 250 ml beaker, which layer would be directly above a small rubber ball with a density of 0.960 g/ml? a. sea water – density of 1.024 g/ml b. mineral oil – density of 0.910 g/ml c. distilled water – density of 1.0 g/ml d. petroleum oil – density of 0.820 g/ml