How many neutrons would a element that has a atomic number of 22 and a atomic mass of 40 have? (this is not based on a element found in the periodic table)

18

40

22

20

represents the space-time, speed-time and acceleration-time graphs for a ball pulled upwards with a speed of 10 m / s from 1 meter of ground

Lightning is formed when clouds

A train moving near the speed of light enters a tunnel. According to a person standing in the middle of the tunnel, the back end of the train enters the tunnel just as the front end is emerging.

How do you find frequency in uniform circular motion?

Which one of the following is a decomposition reaction? A. K2CO3 (s) → K2O (s) + CO2 (g) B. 4Fe (s) + 3O2 (g) → 2Fe2O3 (s) C. N2 (g) + 3H2 (g) → 2NH3 (g) D. 2LiOH (s) + CO2 (g) → Li2CO3 (s) + H2O (l)

When a siren is approaching you, how does the wavelength of the waves reaching you compare to the actual wavelength that the siren emits?

In a harbor, you can see sea waves traveling around the edges of small stationary boats. Why does this happen?

Correct unit of speed

Technician A says that for best results, loosen the fastener immediately after spraying it with penetrating oil. Technician B says that rusted fasteners may be loosened by tapping with a hammer. Which technician is correct? a. technician A only b.

A roller coaster track is 3,000 meters long. It takes 100 seconds to travel once around the roller coaster. Is the velocity constant throughout the trip? Explain.