The gravitational force between two objects is 100 n. if the mass of each object is doubled, what is the gravitational force between the objects at the same distance? 25 n 50 n 200 n 400 n

Aplane flies directly between two cities, a and b, which are separated by . from a to b, the plane flies into a headwind. on the return trip from b to a, the wind velocity is unchanged. the trip from b to a takes less than the trip from a to b. what is the airspeed of the plane, assuming it is the same in both directions

The density of a liquid could be found by using

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?