Physics, 04.06.2021 18:20 estrellagutierrez12
1.) A 70 kg mass is on the edge of a cliff and falls 40 meters before striking a surface where it stops.
What is its potential energy?
a.) 27440
b.) 2800 J
c.) 17.15 J
d.) 285.7
Answers: 3
Physics, 21.06.2019 23:50, george27212
The discovery that the universe appears to be expanding led to a widely accepted theory called a.) the big bang theory b.) the doppler effect c.) hubble’s law d.) solar nebular theory e.) the seyfert theory
Answers: 2
Physics, 22.06.2019 12:30, cardsqueen
Consider a hydrogen atom in the ground state. what is the energy of its electron? =e= jj now consider an excited‑state hydrogen atom. what is the energy of the electron in the =5n=5 level? =e5= j
Answers: 3
1.) A 70 kg mass is on the edge of a cliff and falls 40 meters before striking a surface where it st...