36. Calcula la velocitat lineal de la vora d'una roda de 75 cm de diàmetre si gira a 1.000 rpm .

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)

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)

Example 1 A gas performs work of 800 J in a perfectly insulated container. Calculate the following: a. Change in the internal energy of the gas and, b. State if the temperature will increase or decrease? \( Q=0 \) (Perfectly insulated so no heat exchange, then it is an adiabatic process).

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

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