1. Astronauts appear to be "weightless" while on a spacecraft orbiting the Earth. Explain what is really happening to them and why a person cannot
actually be "weightless".

a. If the astronaut has a mass of 70kg and is orbiting the Earth 4.08x105
m above the Earth's surface, how much gravitational force is the Earth
putting on the astronaut?

What term do psychologists use to designate our personal awareness of feelings, sensations, and thoughts?

What are the applications of electromagnetic waves

Which are advantages of renewable resources? check all that apply. renewable energy supplies are completely reliable everywhere. some renewable resources will never be used up. little or no waste is produced by renewable resource plants. electricity can be generated in large quantities. many renewable energy facilities have lower operating costs.