What is the difference between a neutralization reaction and a double-displacement reaction?

Calculate the resultant of a horizontal vector with a magnitude of 7 units and a vertical vector with a magnitude of 5 units.

The hot glowing surfaces of stars emit energy in the form of electromagnetic radiation. it is a good approximation to assume that the emissivity e is equal to 1 for these surfaces.

Why is it cheaper for a farmer to produce a pound of grain than a pound of meat

Several light bulbs, each of resistance 1.5 Ω, are connected in a series across a 120 V source of emf. If the current through the circuit is 2 A, how many light bulbs are there in the circuit?

A science teacher who was teaching a unit on minerals modeled mineral formation for the class. She heated granular sugar and a very small amount of water in a pan until the sugar melted and boiled.

What causes an air conditioned to turn on

A turntable is spinning on a frictionless axle when a ball of putty is dropped onto it from above. The putty sticks to the turntable when it lands. Is angular momentum conserved for the turntable and putty (the system) during this process?

The speedof a boat in still water is v. The boat is to make a round-trip ina river whose current travels at speed u.

Why are there so few working wave power stations?

Two abiotic factor that effect an ecosystem are;