Q1. A student is swinging a 200 g yo-yo on a 1.0 m long string. How fast must the yo-yo be moving at the bottom of the circle to reach the top of the circle
with no speed?

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2

there are no contact forces mentioned on the list of choices that you've provided.