An element has 50 protons nd 90 neutrons. will the nucleus breakdown? why or why not?

On pluto, a baby would weigh 2.7 newtons. how much does this baby weigh on earth?

A 180 pound person dives off of a 30 foot cliff. What is their velocity as they enter the water? Provide step by step

Find the mass of a flying discus that has a net force of 1.05 newtons and accelerates at 3.5 m/s^2

The easiest time to install conduit is when you're A. removing a circuit from a breaker panel. B. snaking wire through finished walls. C. wiring new construction with open walls. D. converting a fuse box to a breaker panel.

energy is conserved. that is, it can never be created or destroyed. however, every time a conservation of energy occurs, some is transferred to a form that is not usable. this transferred energy is in the form of ___. A. chemical bonds. B.

How many layers of material were the roads made of? a. two c. four b. three d. five

Red light has a shorter wavelength than yellow light.

Approximately what is the parallax angle of a star that is 20 light-years away?

If the Earth and distant stars were stationary (motionless) in space, what would we observe about the wavelength from these stars? A. Wavelengths measured would match the actual wavelengths emitted. B.

Two fire trucks with sirens speeds towards and away from an observer. Which statement is true involving the Doppler effect observed by the observer?