The moons gravity in relation in Earty is .166 if the space shuttle weighs 165,000 pounds on earth how much would it weigh on the moon? A. 25, 000 pounds
B. 26, 430 pounds
C. 27, 390 pounds
D. 28, 690 pounds

why are the models of our solar system misleading?
A. They never include all of the plantets
B. They dont show the distance between planets to scale
C. They arent always labeled

As the average orbit of a planet increases, the length of the year
A. Stays the same
B. increases
C. Decreases

Thank you !!!​

Why is excretion necessary to maintain homeostasis?

The kidney filters potentially toxic substances in the blood, and thus “clears” the blood of those substances. this clearance function is dependent upon and proportional to the diffusion gradient of the substance across filtering capillaries, i. e. if the concentration of the substance is doubled, twice as much will be cleared from each ml of blood that is filtered. suppose that the body produces a constant amount of a substance x per unit of time. the kidneys eliminate substance x at a rate directly proportional to the concentration of the substance and the volume of blood cleared each minute (c): elimination = c × [x], where [x] is the steady-state concentration of substance x. imagine an individual with an initial concentration of x equal to [x]0 who develops kidney disease. her baseline clearance c0 drops to one half of the original (½c0). what is the new steady state concentration of x? (for simplicity, assume that substance x is 100% filtered by the kidney).

According the inverse square law, doubling the distance from the source of the sound, a speaker, for example, will drop the sound 6 db each time. if you were standing in the back of an auditorium, 32 feet away from a speaker not using any amplification, would you be able to hear a speaker clearly? why or why not?