Scientists theorize that oxygen buildup in the atmosphere resulted from ________. A

College Physics 1
Problem 37PE A 500-kg dragster accelerates from rest to a final speed of 110 m/s in 400 m (about a quarter of a mile) and encounters an average frictional force of 1200 N. What is its average power output in watts and horsepower if this takes 7.30 s?

College Physics 1
Problem 39PE (a) Find the useful power output of an elevator motor that lifts a 2500-kg load a height of 35.0 m in 12.0 s, if it also increases the speed from rest to 4.00 m/s. Note that the total mass of the counterbalanced system is 10,000 kgso that only 2500 kg is raised in height, but the full

Chemistry 11
The molecular formula of malonic acid is \(\mathrm{C}_{3} \mathrm{H}_{4} \mathrm{O}_{4}\). If a solution containing 0.762 g of the acid requires 12.44 mL of 1.174 M NaOH for neutralization, how many ionizable H atoms are present in the molecule?

Campbell Biology 10
One feature that amphibians and humans have in common is a. the number of heart chambers. b. a complete separation of circuits for circulation. c. the number of circuits for circulation. d. a low blood pressure in the systemic circuit.

Biology for AP Courses
Name two different cellular functions that require energy. a. Phagocytosis helps amoebae take up nutrients and pseudopodia help the amoebae move. b. Phagocytosis allows amoebae to move and pseudopodia help in the uptake of nutrients. c. Phagocytosis helps amoebae to take up nutrients and cilia help a

Principles of Economics 9
If the government wants to expand aggregate demand, it can _________ government purchases or _________ taxes. a. increase; increase b. increase; decrease c. decrease; increase d. decrease; decrease

Biochemistry 9
Explain what is meant by \(K_{0.5}\)