Which statements best describe what is happening in the image? A: Light rays are bending as they move from air to water.
B: The water pressure is bending the pencil.
C: Sound waves are vibrating the water to make the pencil break.
D: Refraction of light is causing the pencil to appear broken.

(BTW there are 2 correct answers :33)

Assume you measured the mass of the cart to be (500 ± 1) g and the mass of the additional mass you put on the cart to be (500 ± 1) g as well. since the scale you are using in the lab cannot measure objects heavier than 600g you will have to sum up individual pieces and propagate the error. so what would be the mass and the standard error of the cart and the mass

Click the game tab at the bottom of the simulation and select level 1. (there is no seesaw balance for this part of the activity.) balance the first equation, and click check to see if you got it right. if you can’t balance it in the first try, you can try again. work through the five equations for level 1. click continue to go on to level 2, and later level 3. each level is more difficult than the one before. keep trying until all the equations are balanced. in one or two sentences, describe how you did in the balancing game. in a few more sentences, explain one strategy you learned for balancing more complex equations.

Use vsepr theory to predict the molecular geometry of the molecule hcn.