3. Two carts of identical mass are free to move along a straight, frictionless track. At time t, cart X is moving at 2.0 m/s when it collides with and sticks to cart Y, which is initially at rest. Which of
the following graphs best shows the velocity of cart X before and after the collision?
(A)
Velocity (m/s)
Velocity (m/s)
11
Time (s)
Time (s)
(B)
(D)
Velocity (m/s)
Velocity (m/s)
+
0
11
Time (s)
11
Time (s)
-

Aflask with vinegar in it has a mass of 160 grams. a balloon with baking soda in it has a mass of 40 grams. the balloon is attached to the flask to seal the opening and the vinegar and baking soda mixes. the balloon inflates to a large volume. what will the total mass of the balloon and flask be after the balloon inflates? explain. a) less than 200 grams because the solid baking soda disappears. b) 200 grams, because all the atoms remain in the balloon or flask. c) more than 200 grams because the size of the balloon is so much larger. d) less than 200 grams because gases such as the one in the balloon are lighter than solids and liquids.

It takes a lot of energy to get the temperature of water to increase and eventually boil because water has a high heat.

Based on details in the riddle of the rosetta stone, which statement best describes jean-baptiste fourier’s influence on jean-françois champollion?