The correct answer is #4. They have the same number of protons but a different number of neutrons.
Answer:
There are four basic states of matter
Answer:
the Restoring force causes the vibrating object to go slower going further from the equilibrium position and to go faster as it approaches the equilibrium position. the restoring force is what is causing the vibration The tension force comes from the string tugging on the bob of the pendulum.
Explanation:
Wein’s Law, search it up if you need more info
