How do scientists decide what and how to investigate a problem? Describe all the factors and how you think they influence the work of scientists. Be as specific as possible.

Which is an example of an exothermic process?

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.)

If the area of a square has increased by a factor of 16, by how much has each side increased?