Q6. A student moves a coil towards a magnet and sees an induced voltage on the voltmeter. What would she notice about the induced voltage if: [3] a. She moved the magnet towards the coil at a slower speed?



b. She moved the magnet towards the coil at the same speed?



c. She turned the magnet round and moved it towards the coil?

What component of earth’s atmosphere exists entirely as a result of photosynthesis?

An insulated thermos contains 148 g of water at 72.7 ˚c. you put in a 11.7 g ice cube at 0.00 ˚c to form a system of ice + original water. the specific heat of liquid water is 4190 j/kg•k; and the heat of fusion of water is 333 kj/kg. what is the net entropy change of the system from then until the system reaches the final (equilibrium) temperature?

Which of the following conditions lead you to see an absorption line spectrum from a cloud of gas in interstellar space? the cloud is extremely hot. the cloud is visible primarily because it reflects light from nearby stars. the cloud is cool and lies between you and a hot star. the cloud is cool and very dense, so that you cannot see any objects that lie behind it.