HW 1: Name Clarabelle Barraza student ID: 1. In major league baseball, the pitcher's mound is 60 feet from the batter. If a pitcher throws an \( 85 \mathrm{~m} / \mathrm{h} \) fastball, how much time elapses from when the ball leaves the pitcher's hand until the ball reaches the batter? Solve it in the unit of second.

Nuclear fission and nuclear fusion are important nuclear processes that result in a change in the nucleus of isotopes. (a) Compare nuclear fission and nuclear fusion, and explain two similarities be- tween them. (b) Describe two ways nuclear fission and nuclear fusion differ regarding require- ments for reactions and applications. You can start your response with: - Nuclear fission and nuclear fusion are similar in that they both ... - Two ways in which nuclear fusion differs from nuclear fission are...

HW 1: Name Clarabelle Barraza student ID: 1. In major league baseball, the pitcher's mound is 60 feet from the batter. If a pitcher throws an \( 85 \mathrm{~m} / \mathrm{h} \) fastball, how much time elapses from when the ball leaves the pitcher's hand until the ball reaches the batter? Solve it in the unit of second.

If the half-life of \( 1-131 \) is 7.7 days, how long would it take for \( 1-131 \) to go through 5.5 half-lives? (Round your answers to two decimal points)

Cuando la luz golpea la frontera entre dos medios, pueden ocurrir: Seleccione una: a. Absorción b. Todas son correctas. c. Reflexión d. Refracción

What is the force on a 1000 kg elevator that is falling freely at \( 9.8 \mathrm{~m} / \mathrm{sec}^{2} ? \)