Question: Given the background: Making these healthy lifestyle choices can also help prevent some types of cancer. In addition, you can lower the risk of cancer by avoiding carcinogens , which are substances that cause cancer. For example, you can reduce your risk of lung cancer by not smoking. You can reduce your risk of skin cancer by using sunscreen. How to choose a sunscreen that offers the most protection is explained below ( Figure below ). Some people think that tanning beds are a safe way to get a tan. This is a myth. Tanning beds expose the skin to UV radiation. Any exposure to UV radiation increases the risk of skin cancer. It doesn't matter whether the radiation comes from tanning lamps or the sun. and the situation: Two smoker friends found out more about cancer. Bill got scared and started making healthy lifestyle choices, while Dan carried on with his life as if nothing happened. Answer the following question: Which friend decided to use sunscreen?
Answer: Bill

Question: Given the background: When current flows through wires and resistors in a circuit as a result of a difference in electric potential, charge does not build up significantly anywhere on its path. Capacitors are devices placed in electric circuits where charge can build up. The amount of charge a capacitor can store before it "fills up" depends on its shape and how much electric potential is applied. The ratio of charge stored in a capacitor to the voltage applied is called its capacitance , measured in Farads . The larger the electric potential in volts, the stronger the electric field that is used to "cram" the charge into the device. Any capacitor will fill up with enough charge. Capacitors store energy when charged, and release it when they discharge. and the situation: Samuel needs to charge a capacitor for his vaporizer but cannot locate his charger. He plans to buy a band new charger but needs something to suffice for the meantime. He manages to find the cord for the charger and splices the wires on it. He connects the spliced wires on either end of his capacitor and plugs the cord into a wall outlet to give it some electricity. Answer the following question: Will the stored energy in the capacitor increase or decrease?
Answer: increase

Question: Given the background: It would be very unadvisable to place a can of soup over a campfire without venting the can. As the can heats up, it may explode. The kinetic-molecular theory explains why. The air inside the rigid can of soup is given more kinetic energy by the heat coming from the campfire. The kinetic energy causes the air molecules to move faster and they impact the container walls more frequently and with more force. The increase in pressure inside may eventually exceed the strength of the can and it will explode. An additional factor is that the soup may begin boiling which will then aid even more gas and more pressure to the inside of the can. and the situation: Two campers were in the woods over the week-end. They both had canned soup with them. Pete heated the can without venting it and it exploded, while Dan opened his can and heated it over the fire with no additional problems. Answer the following question: Which camper observed that as the can heated up, it might have exploded?
Answer:
Pete