Someone help me please Write an informative essay on the Great Chicago Fire. Your essay will use research to explain what caused the fire to burn out of control and to describe the fire's effects and aftermath.

Which changes of state do the labels represent? a: b: c:

What is friction? how does it affect the motion of an object?

Aplayground slide is 8.80 ft long and makes an angle of 25.0° with the horizontal. a 63.0-kg child, initially at the top, slides all the way down to the bottom of the slide. (a) choosing the bottom of the slide as the reference configuration, what is the system's potential energy when the child is at the top and at the bottom of the slide? what is the change in potential energy as the child slides from the top to the bottom of the slide? (include the sign of the value in your answer.)