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

The modern atomic model may seem strange when compared to earlier atomic models because it describes

Why do we sometimes hear that humans are top of the food chain?

3 examples of crystals

Why might exposing astronauts to weightlessness be harmful?

Katie Cool buys a fancy Jaguar car that can accelerate at the rate of 4.9 m/sec2. She decides to test the car by racing with another speedster, Steve Speedy. Both start from rest, but experienced Stan leaves the starting line 1.0 sec before Katie.

How did changing from a light drizzle to a downpour affect the river and the sediment The river increased its slope. The volume of the river decreased. The velocity of the river increased! There was more erosion in the stream.

Which of the fundamental forces explains the structure of atoms and molecules?

It always takes to change the motion of an object. O A. electricity OB. energy C. gravity D. density Reset

What might a psychodynamic theorist think about a person with extreme shyness?

Determine the magnitude of the acceleration for the speeding up phase.