An atom with two protons, three neutrons and two electrons would have a mass of about how many atomic mass units?

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

An object in mechanical equilibrium is an object

An astronaut floating in space is trying to use her jetpack to get back to her space station, but she is being pulled away by a nearby planet, as shown in the image below. her jetpack provides a constant thrust of 310 n. if she angles her jetpack in such a way that it cancels out the vertical force due to the planet's gravity, what is her net horizontal force? thaud 487 o a. 54.8 n toward the space station o b. 212.9 n toward the space station o c. 185.2 n toward the space station o d 956 n toward the space station