Question
please help me out with this question.
In the figure, the light wave inside the glass undergoes upon reflection. no phase change a 180degree phase change A certain radioactive sample emits beta particles. If we wait a period time equal to the half-life of the radioactive material, the number of beta particles emitted per second will be the same. double. half. Suppose that you are standing next to a pond of water, and there is a tree on the other side of the pond. When you look into the pond, you see a reflection of the tree. This image of the tree produced by the reflection at the air-water interface is real. virtual. I weigh a glass of water on a set of scales. If I hang an iron weight from the ceiling so that it is submerged in the water but does not touch the bottom or sides of the glass, the reading on the scale will be the same. less. more. When we isothermally compress an ideal gas, we must add heat to the gas. neither add heat or remove heat. remove heat from the gas. There is not enough information given to determine whether heat should be added or removed. A car speeds through an intersection where a policeman is directing traffic. As the car passes him, he blows his whistle. The motorist hears that the frequency of the sound of the whistle after he passes the policeman is before he passes the policeman. Consider the frequency of the whistle to be constant in the reference frame of the policeman. the same as less than greater than
Explanation / Answer
4)a
5) b
6) a
7) c
8) b
9 ) a
