The sun is a significant factor that to support life. which of the following earth-sun relationships is not true?

a. the sun's gravity keeps earth from flying off into space.
b. earth is the 4th planet from the sun, which is a perfect distance to utilize the sun's energy.
c. the sun is key to dynamic processes on earth, like weather, climate, and cycling of water.
d. if earth were any farther from the sun, more ice would form reflecting more heat and making the planet similar to mars.

Consider the following position function. find (a) the velocity and the speed of the object and (b) the acceleration of the object. bold r left parenthesis t right parenthesisr(t)equals=left angle 6 t superscript 4 baseline comma 2 t cubed right angle6t4,2t3 for tgreater than or equals≥0

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt

16. a brave but inadequate rugby player is being pushed backward by an opposing player who is exerting a force of 800 n on him. the mass of the losing player plus equipment is 90.0 kg, and he is accelerating at 1.20m/s2 size 12{1 "." "20"" m/s" rsup { size 8{2} } } {} backward. (a) what is the force of friction between the losing player’s feet and the grass? (b) what force does the winning player exert on the ground to move forward if his mass plus equipment is 110 kg? (c) draw a sketch of the situation showing the system of interest used to solve each part. for this situation, draw a free-body diagram and write the net force equation.