Before dinner, mr. larsen pushes his daughter sally on her swing for a few
minutes. the chain creaks and rubs against the metal hook at the top of the
bar as she swings through the air. after he stops pushing her, she slows down
and eventually stops. this example shows that:
a. energy is converted between forms with complete efficiency.
b. energy is created as sally's dad begins to push her.
c. energy is destroyed by friction and vibration.
d. energy is transferred to friction and vibration as it is converted between different forms.

the answer is yes

it has kinetic energy

reason

an object has kinetic energy when you stop the force carrying it, the object will stay in motion.

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rosa was looking for patterns to predict the products of chemical reactions. she recorded three similar decomposition reactions in the table.she should record 2licl + 3o2.

in the last row of the table. it is the thermal decomposition of chlorate lithium, hence, she should record these products as: lithium chloride ( 2licl ) and oxygen ( 3o2 )   2 > 2 licl + 3o2.

it has both hydrogen and oxygen