What happens to the particles in a substance during a physical chance

A 20kg cannonball is fired into a stationary 500kg boulder at on the edge of a 125m high cliff. If the cannonball remains in the boulder and together they land 140m horizontally from the edge of the cliff, what was the initial speed of the boulder?

What is the power used if it took 2,000 j to move a box in 8 s?

Why do airplanes need to be pressurized for passenger safety when flying high in the atmosphere?

What is the relationship between work and power

A nitrogen atom has 7 electrons. to what level are it's electrons found

A blow-dryer and a vacuum cleaner each operate with a voltage of 120 V. The current rating of the blow-dryer is 12 A, while that of the vacuum cleaner is 5.7 A. Determine the power consumed by (a) the blow-dryer and (b) the vacuum cleaner.

4. A 40 kg child and a 30 kg child want to balance themselves on a 4 meter, 50 kilogramn see-saw. Where should the fulcrum be placed?

A 2-kg object is dropped from a height of 1000 m. What is the force of air resistance on the object when it reaches terminal velocity

What is the approximate increase in size from a 1 w to a 2w carbon resistor?

I am looking for this answer : Which shows a correct order of steps in the scientific method? develop a hypothesis, analyze data, make observations, draw conclusions make observations, draw conclusions, develop a hypothesis, analyze data.