Iwill give 25 1) joe and ben were arguing about the law of conservation of energy. joe said that the law of conservation of energy must be false because when you turn on a light it uses energy and so some of the energy is lost. ben disagrees and says that energy cannot be created or destroyed. who is right? justify your answer. a) joe is right because the electricity is changed to heat and light and is no longer electricity. b)ben is right because the law of conservation of energy is a law and cannot be false. c) ben is right because the electricity from the light is transformed into heat and light. d) joe is right because all electrical lights and appliances use electricity. 2) greg and shawn are studying for a physical science test. greg thinks that the kinetic energy of an object depends on the height and speed of an object, but shawn thinks it depends on the mass of an object. who is right and why? a) shawn is right. the mass of an object determines the inertia of the object. increasing inertia is the only thing that will increase kinetic energy.. b) both greg and shawn are correct since kinetic energy depends on mass, height and speed of an object. c) greg is right. increasing the height or speed of an object increases the kinetic energy of an object. d) neither is completely right. shawn is partly correct since kinetic energy depends on mass, but greg is also partly right since it also depends on speed. 3) dan got into his car in the middle of summer. when he sat on the hot black leather seats, he burned his legs. his sister said that conduction was the reason dan burned his legs, but dan blamed the sunshine and said it was radiation that caused him to get burned. who was right and why? a) both dan and his sister are right. the sun heated the car seats through radiation heat transfer, but then dan touched the seat and the heat was conducted to his legs. b) dan's sister was correct because dan's legs touched the car seats. that is an indicator of heat transfer by conduction. c) dan was right because the sun heated the car without touching it. that is radiation. d) dan's sister was right because conduction can transfer heat through both solids and fluids (such as air).