In digestion the molecules in your food break down to simpler chemical substances releasing energy as they do so this is a physical change

true or false

A circuit that has only a single path for current to flow through is best classified into which category?

An 1800-kg truck pulls a 710-kg trailer away from a stoplight with an acceleration of 1.20 m/s2. Part A What is the net force exerted by the truck on the trailer? Express your answer to three significant figures and include the appropriate units.

2. In a series circuit, all resistors have identical currents. a) What is the relationship between the power and resistance of these resistors? b) In a parallel circuit, all resistors have identical voltages.

Agree or Disagree. The ozone hole devoloped over Antartica because the ozone layer there is thinner the over other parts of the earth? Give facts for your argument.

9. How are the fossils in question 8 formed?

When air pressure is lower what happens to a balloon filled with air

Determine the power input for a motor necessary to lift 300 lb at a constant rate of 7 ft/s. the efficiency of the motor is ϵ = 0.65.

The thermal contact resistance at the interface of two 1-cm thick copper plates is measured to be 0.000056 m2K/W.

A provides resistance in an electric circuit. a. wire b. light bulb c. switch. d. battry

Why is it good for scientist to be skeptical