13. If the masses of the two objects stay the same, what must be done to reduce to gravitational force between them? A. You must change the Gravitational constant.
B. You must increase their distance from eachother.
C. You must change the material the objects are made of.
D. You must give the objects an electric charge.

14. What is the atomic level source of positive and negative charges?

The frequency of a given region of the electromagnetic spectrum ranges from 3 × 1016 − 3 × 1019 hertz. which type of wave is found in this region? a. x-rays b. ultraviolet rays c. infrared waves d. radio waves

(science)study the following ocean currents map. an ocean currents map is shown. on the map the locations for san diego, california and savannah, georgia are marked. there is a looping current from the north past san diego and a looping current from the south near savannah which statement is most likely correct about the average temperatures in san diego, california as compared to savannah, georgia? it is higher in savannah because of the cool ocean currents from the south. it is higher in savannah because of the warm ocean currents from the north. it is lower in san diego because of the warm ocean currents from the south. it is lower in san diego because of the cool ocean currents from the north.

Crowbar of 5 metre is used to lift an object of 800 metre if the effort arm is 200cm calculate the force applied