A graduated cylinder is filled to an initial volume of 12.7 ml. A rock is dropped into the graduated cylinder. The final volume of the graduated cylinder is 18.2 ml. What is the rock’s density if it has a mass of 8.6 g?

Why does the input force have to be greater than the force needed to lift the bale?

Waves are used in many practical applications to support work, entertainment, and health. one example is the use of ultrasound imaging to safely track the development of a growing fetus. what is a specific example of a practical application of waves in medicine, entertainment, safety, or other fields? provide a brief explanation of how the properties of waves are useful to that application.

You are driving directly behind a pickup truck, going at the same speed as the truck. a crate falls from the bed of the truck to the road. (a) will your car hit the crate before the crate hits the road if you neither brake nor swerve? (b) during the fall, is the horizontal speed of the crate more than, less than, or the same as that of the truck?