In a coal-fired power plant, after the steam has been used to turn the turbine to power the generator, it goes through a condenser. What’s happening in this process?
A. a phase change from a liquid togas
B. a phase change from gas to liquid
C. an energy change from kinetic energy to potential energy
D. an energy change from heat energy to kinetic energy
Suppose you cut an apple into 4 slices and then eat it. Your body digests it and uses the energy from the apple to help your body grow. Pick the correct physical and chemical changes from the following list
A. physical changes = cutting the apple; chemical changes = digesting the apple, your body growing
B. physical changes = cutting the apple, your body growing; chemical changes = digesting the apple
C. physical changes = body growing; chemical changes = digesting and cutting the apple
D. physical changes = digesting the apple; chemical changes = your body growing
Suppose you have a gas under 2 atm of pressure and taking up 0.5 m3 of volume. If you compress the gas so that it takes up 0.1 m3 of volume, what is the new pressure of the gas?
When coal is placed into a burner, what type of energy is being supplied to the burner?
A. light
B. nuclear
C. chemical
What is chemical energy?
A. the form of energy that we perceive with our eyes
B. the energy of motio
C. the energy that does work through chemical reactions
In a coal-burning power plant, a condenser is used to cool down the steam and convert it back to liquid water.
true
false
A windmill converts the chemical energy of the wind to nuclear energy at a wind power plant.
true
false
Answers: 1
Physics, 22.06.2019 14:30, val926
When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell
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Physics, 22.06.2019 19:00, freddhendrickss
The built in flash in a compact camera is usally capable of giving correct exsposure for distance up to how many meters?
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3. a worker pushes a 30.5 kg polished stone along a polished table with a force on bonin a straight line for 5.20 s after starting from rest. there is no friction between thestone and the table. at the end of the table. the stone is hooked to a cable with a lengthof 62.0 cm to rotate it to a rough table to store until they can be picked up. the roughtable has a coefficient of static friction 0.702 with the polished stone. remember that 8= 9.80 m/s2a) what is the speed of the stone when it is hooked to the cable? b) what is the tension in the cable while the stone is rotating? (there is still nofriction)c) how much force is needed to make the stone begin sliding from rest on therough table? ius = 0.70262.0 cm30.5 kg20.5 kg6= 0
Answers: 2
In a coal-fired power plant, after the steam has been used to turn the turbine to power the generato...
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