Your little cousin, Lincoln, knows more than you about everything. During dinner, he proudly tells your family that an oven uses one method of heat transfer to cook food. Using what you know about conduction, convection, and radiation - how would you correct his thinking and explain what kind(s) of heat transfer an oven uses to cook food?

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.)