How can the students determine if the sample is pure or a mixture? A. Observe the shape of the sample.

B. Measure the mass of the sample.

C. Find the melting point of the sample.

D. Determine the volume of the sample.​

The coulomb's law explains which of the following? select all the force between two charged objects is inversely proportional to the charge on each object. the force between two charged objects is directly proportional to the charge on each object. the force between two charged objects is directly proportional to the distance separating them. the force between two charged objects is inversely proportional to the square of the distance separat coulomb's law is similar to newton's 2nd law. if the force between two objects is f and the charge on both objects is doubled, the new force between the would now be 2f. if the force between two objects is 2f and the distance separating them is doubled, the new force between the objects would now o the be zf.

We put a force of 50n on an object and the acceleration is 100 m/s². what is the mass of the object?

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?