Explain how you find the instantaneous speed or velocity of an object I dont want to know WHAT it is I want to know HOW to find it

Acamcorder has a power rating of 17 watts. if the output voltage from its battery is 7 volts, what current does it use?units:

An excess of lithium oxide undergoes a synthesis reaction with water to produce lithium hydroxide li2o+h2o→2lioh if 1.05 g of water reacted, what is the theoretical yield of lithium hydroxide? a) 5.83 x 10–2 g lioh b) 1.17 x 10–1 g lioh c) 2.79 x 100 g lioh d) 1.40 x 100 g lioh

#20 which type of bond is formed when bases pair in dna? ionic bond covalent bond coordinate bond hydrogen bond