energy

A welding torch produces a flame by burning acetylene fuel in the presence of oxygen. The energy released from the acetylene fuel is then used to melt a metal. Which energy transformation happens during this process

a

Which is the best term to use when describing the energy of motion?

B

According to the law of conservation of energy, what will most likely happen in a closed system

b

Which is the best example of potential energy

b and d wrong

Which statement describes thermal energy?

d

A generator contains a coil that spins to produce an electric current. How is energy transformed by using a generator?

D

Which statement is correct about the law of conservation of energy?

D

A welding torch produces a flame by burning acetylene fuel in the presence of oxygen. The energy released from the acetylene fuel is then used to melt a metal. Which energy transformation happens during this process?

a

Consider the generic chemical equation below. X + Ymc021-1.jpg W + Z Reactant X contains 199.3 J of chemical energy. Reactant Y contains 272.3 J of chemical energy. Product W contains 41.9 J of chemical energy. If the reaction loses 111.6 J of chemical energy as it proceeds, how much chemical energy must product Z contain?

a

Old photographic flashbulbs burn magnesium metal in a reaction that causes a flash of brilliant white light. A photographer would need to take care not to suffer burned fingers when trying to replace the hot bulb. What best identifies the energy transformation that occurs in the flashbulb?

a

Chemical energy in burning wood is changed into thermal energy. The thermal energy is absorbed by water, which boils to produce steam. The thermal energy is changed into kinetic energy in the moving steam. The kinetic energy is used to turn a turbine, which converts the kinetic energy into electricity. Which sentence best describes this system?

c

What happens to energy when Sally kicks a soccer ball?

c

Which is the best term to use when describing the energy of position

c

Which is the best term to use when describing the energy of position?

c

A baseball player hits a ball. Which is the best description of the energy of the ball as it flies over the pitcher's head

c wrong

Thermal energy is the energy associated with

d