Two objects are held close to each other with a compressed spring between them. When the spring is released, one object moves off with a speed of 0.63 m/s, and the other object moves off with a speed of 0.45 m/s. If the faster object has a mass of 0.15 kg, what is the mass of the slower
object?
(A) 0.15 kg (B) 0.21 kg (C) 0.30 kg (D) 0.37 kg
. For the same object as the previous problem, what is the total momentum of both objects just after the spring is released?
(A) 0 kg • m/s (B) 0.095 kg • m/s (C) 0.19 kg • m/s (D) 0.38 kg • m/s

To run the physics cart, the fan speed of the cart is manipulated. this is the (blank) variable. the cart accelerates due to the speed of the fan. acceleration is therefore the (blank) variable. a “constant” is a parameter that stays the same regardless of the variables. one parameter of the cart that is held constant is the (blank) .

4. now look at the green lines you created by connecting the three boiling point data points and the three melting point data points. for each of these lines, describe any trends you see. 5. locate the elements on your periodic table that you circled in green on your graph. what term or description would you use to identify these elements with respect to the periodic table? 7. using the room temperature line (orange line) and your periodic table, make lists that identify the state of matter (gas, liquid, or solid) in which each element you plotted exists at room temperature. explain your answers.

Ateacher gives students four liquids commonly found in the kitchen - vinegar, apple juice, dish detergent, and milk - and ph indicator strips, which measure acidity. the teacher asks the students to put the liquids in order from most acidic to most basic. what type of investigation could the students conduct to determine the correct order for the liquids?