Sally made breakfast for the family on saturday morning. she put some bread in the toaster. when the bread popped up, sally grabbed the toast. "ouch! that's hot! " sally exclaimed. what was the source of the heat that made the bread hot? a) burning b) electricity c) friction eliminate d) light

What is a possible result of higher air temperature caused by global warming

Madison pushes with a 210-n horizontal force on a 24-kg crate of coffee resting on a warehouse floor. the force of friction on the crate is 74 n. what is the acceleration?

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.)