Coefficient of kinetic friction of skis on snow
Sam, whose mass is 69.0 kg, takes off down a 48.0 m high, 10.0 degree slope on his jet-powered skis. The skis have a thrust of 180 N. Sam's speed at the bottom is 43.0 m/s. What is the coefficient of kinetic friction of his skis on snow?
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What will be the effect of deleting the Sxl gene in a newly fertilized Drosophila embryo?
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