A 4 kg rock is at the edge of a cliff 30 meters above a lake. It becomes loose and falls toward the water below.
Calculate its potential and kinetic energy when it is at the top and when it is halfway down.
Its speed is 16 m/s at the halfway point. pls answer

Review the branily terms and services guides well u know what i never did so go have a nice ice cream sunday

Effect of rotenone and antimycin a on electron transfer rotenone, a toxic natural product from plants, strongly inhibits nadh dehydrogenase of insect and fish mitochondria. antimycin a, a toxic antibiotic, strongly inhibits the oxidation of ubiquinol. (a) explain why rotenone ingestion is lethal to some insect and fish species. (b) explain why antimycin a is a poison. (c) given that rotenone and antimycin a are equally effective in blocking their respective sites in the electron-transfer chain, which would be a more potent poison? explain.

Acompound has a molecular weight of 12.124 atomic mass units and the empirical formula c3h40. what is the molecular formula of the compound?