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.

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

What requirements must be met for a nuclear fu- sion reaction to occur? A select all that apply. A extremely low temperatures C extremely high temperatures D a large amount of pressure

If the half-life of \( 1-131 \) is 7.4 days, how many days would it take for only \( 3.2 \times \) \( 10^{-2} \) grams of \( 1-131 \) to be left in Mr. Miller's body if Dr. Goodie started him on an initial dose of 5.5 grams? (Round your answer to two decimal points)

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...

Suponha que, neste experimento, os cavalos de Thompson exercessem uma força F, ao mesmo tempo que, a cada segundo, deslocavam uma distância de 3 metros. Se em 1,6 horas, 19 litros de água tiverem sido aquecidos de uma temperatura inicial de \( 20^{\circ} C \) até uma temperatura final de \( 100^{\circ} C \), calcule o valor da força F realizada pelos cavalos. Suponha, para isso, que todo o trabalho realizado pelos cavalos seja convertido em energia térmica da água. Considere que o calor específico da água vale \( c_{a g u a}=1 \) cal \( / g^{\circ} C \), que \( 1 c a l=4,18 \mathrm{~J} \) e que a densidade da água é de \( 1 \mathrm{~g} / \mathrm{mL} \) (ou seja, cada litro corresponde a 1000 g de água).