What does the 2 in H2 represent?

An internal combustion engine uses fuel, of energy content 44.4 MJ/kg, at a rate of 5kg/h. If the efficiency is 28%, determine the power output and the rate of heat rejection?

Why dose there need to be both consumers and producers in an ecosystem?

What key ingredient in the modern condensation theory was missing or unknown in the nebula theory?

How did later discoveries change the model of Mendeleev's periodic table to what we accept today? A) Mendeleev's periodic table was labelled as inaccurate and his founding principles were scrapped.

A ladybug sits at the outer edge of a merry-go-round and a gentleman bug sits halfway between her and the axis of rotation. The merry-go-round makes a complete revolution once each second. What is the gentleman bug's angular speed?

Which branch of science includes the laws of matter and energy?

A very famous motorcyclist plans to jump across a canyon 3.5 kilometers wide. he plans to use a 30 degree ramp and leaves it at 196 m/s. Will he make it? show all calculations to prove your answer

What captures energvy from sunlight during photosynthesis

The scientific theories developed by copernicus galileo and newton resulted in

How could you find out which wire is broken in a cable?