The Parker Solar Probe is on its way to the Sun. It is the fastest vehicle humans have built. It will reach a speed of 4.3 x 10^5 miles per hour. At that speed how long would it take to reach the center of our galaxy? Assume straight-line flight from Earth. The earth is 2.5 x 10^4 light years from the center of the Milky Way galaxy. A light year is 5.879 x 10^12 miles. A year is 365.25 days.

What must happen before a body cell can begin mitotic cell division

Write a hypothesis that answers the lesson question, “while observing a chemical reaction, how can you tell which reactant is limiting? ” hypothesis: if a substance is the limiting reactant, then . . because . .

Lab reagent, hypothesis test. a reference solution used as a lab reagent is purported to have a concentration of 5 mg/dl. six samples are taken from this solution and the following concentrations are recorded: (5.32, 4.88, 5.10, 4.73, 5.15, 4.75) mg/dl. these six measurements are assumed to be an srs of all possible measurements from solution. they are also assumed to have a standard deviation of 0.2, a normal distributin, and a mean concentration equal to the true concentration of the solution. carry out a significance test to determine whether these six measurements provide reliable evidence that the true concentration of the solution is actually not 5 mg/dl.