To enable cooking a wider range of foods in microwave ovens, thin, metallic packaging materials have been developed that will readily absorb microwave energy. as the packaging material is heated by the microwaves, conduction simultaneously occurs from the hot packaging material to the cold food. consider the spherical piece of frozen ground beef of problem 5.33 that is now wrapped in the thin microwave-absorbing packaging material. determine the time needed for the beef that is immediately adjacent to the packaging material to reach 7 0c if 50% of the oven power (

Water at room temperature of 20.0°c is poured into an aluminum cylinder which has graduation markings etched on the inside. the reading in the graduations is 300.0 cc. the cylinder with the water in it is then immersed in a constant temperature bath at a temperature of 100°c. what is the reading for the level of water on the graduations of the cylinder after the water and the cylinder reach thermal equilibrium with the bath? the volume coefficient of expansion of water is 2.07 x 10^-4 k-1, and the linear coefficient of expansion of aluminum is 23.0 x 10^-6 k-1. a) 305.0 cc b) 304.0 cc c) 303.5 cc d) 303.3 cc e) 304.5 cc

Explain to someone who knows nothing about fossils the study of invertebrate paleontology and how it scientists understand the history of the earth. be sure your explanation contains a minimum of two complete sentences.

The slope of a velocity time graph over any interval of time gives the during that interval