What is the charge on a hypothetical ion with 55 protons and 52 electrons?

What property of matter is momentum related too?

Which colors of light represents the lowest visible frequency?

Why is no work done when you hold a book in place over your head? A A force is applied to the book, but there is no movement. B The book has motion, but no force is applied to it. C A force is applied to the book, causing it to move.

In 1996, NASA performed an experiment called the Tethered Satellite experiment. In this experiment a 2.30 104-m length of wire was let out by the space shuttle Atlantis to generate a motional emf. The shuttle had an orbital speed of 7.

The sit-and-reach test tells you how your muscles are.

During combustion, a fuel's electromagnetic energy is converted into thermal energy.

Explain why glucose is important to a cell

4. How far does a car travel in 90 seconds if it is traveling at a speed of 55 m/s?

Total energy input is 1400 and my efficiency is 80% so what is the useful energy output in jules?

What is the force of gravity acting on a 2000-kg spacecraft when it orbits two Earth radii from the Earth's center (that is a distance r=6380 km above the Earth's Surface. The mass of the Earth is 5.98 x 1024 kg.