An element's atomic number is 45. How many protons would an atom of this element have?

What two factors does sonar use to determine ocean depth?

Do these examples represent unbalanced or balanced forces?

Are all neon lights made up of neon gases

Newton's ideas on physics "won", and aristotle's ideas were kicked out of science and over into history. why?

3. How does the vapor pressure of water at 10°C compare with its vapor pressure at 50°C? The vapor pressure of water is lower at 50°C than it is at 10°C.

What is the unit for force we use when calculating F=ma?

A vector of magnitude 20 is added to a vector of magnitude 25. The magnitude of this sum. might be:. A. zero. B. 3. C. 12. D. 47. E. 50

Calculate the gravitational potential energy of a 10kg box on the top shelf of a closet, 2m above the floor

In late adulthood, changes in memory may bot be inevitable however, any decline in memory tends to invite

On october 15, 2001, a planet was discovered orbiting around the star hd 68988. its orbital distance was measured to be 10.5 million kilometers from the center of the star, and its orbital period was estimated at 6.3 days.