What would be an example of chemical change that took a long time to occur

A city planner is working on the redesign of a hilly portion of a city. an important consideration is how steep the roads can be so that even low-powered cars can get up the hills without slowing down.

An empty rubber balloon has a mass of 12.5 g. The balloon is filled with helium at a density of 0.181 kg/m3. At this density the balloon has a radius of 0.294 m.

If the distance is 640 miles, and the time is 40 hours, whats the distance

What is a hazardous serial killer? Use your brain to answer the question.

A person who is described as intersex is

Cells are known as the foundation of all life. How have these small structures changed our planet?

What does it mean to dissolve something

Why is a neutral object attracted to a charged object?

The international space station revolves around earths surface. which of the following statement s is true? a. it has no energy because it is stationary b. it has potential energy, but does not have kinetic energy c.

A sports car moving at constant speed travels 115m in 5.3 s. If it then brakes and comes to a stop in 4.0 s, what is it's acceleration? Express the answer in terms of g's, where g = 9.