In a heat engine, if 700 j of heat enters the system, and the piston does 400 j of work, what is the final internal energy of the system if the initial energy is 1,200 j?

A 1,100 J

B 300 J

C 1,500 J

D 900 J

Why is coal considered a nonrenewable resource? Check all that apply. 1. Coal is burned to generate electricity. 2. Coal power plants give off large quantities of smoke and ash. 3. Coal forms so slowly that we could use up the supply that exists now.

What are some examples of convection in our daily lives

What increases the work output of a machine

1. The following equation is derived from Newton's Second Law of Motion. A body of mass has a Force of 20 N/s and an acceleration of 50 m/s2. What's the mass of the object? A. 0.8 kg B. 0.5 kg C. 0.4 kg D. 1.5 kg

Which of the following clocks is the most precise

6. A technlclan can be electrocuted when working on HEVs or EVs. A) O True B) O False

You light a light bulb with a 1.5 volt battery. if the bulb has a resistance of 10 ohms, how much current is flowing?

How are the mass and weight an object related? Include a description with words and a equation.

Which layer of the atmosphere is the top layer of the thermosphere?

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