WILL GIVE 30 points no scams or I will report and delete Describe three machines that humans have designed and explain how the mechanical advantage

The passage that directs air to the lungs is called a. diaphragm. b. larynx. c. bronchi. d. pharynx.

Nacidified solution was electrolyzed using copper electrodes. a constant current of 1.18 a caused the anode to lose 0.584 g after 1.52 ✕ 103 s. given that the charge of an electron is 1.6022 ✕ 10−19 c, calculate avogadro's number. assume that copper is oxidized to cu2+ ions.

Acar travels in reverse. it covers 150 meters in 12 seconds what is the velocity of the car what is the speed of the car