teacher assigns a project in class. The project is to design a solar oven that is capable of cooking a hotdog to a specified temperature. Describe the energy conversion that is taking place and suggest a way or ways that the effciency of the solar oven could be evaluated.

Acatapult is tested by roman legionnaires. they tabulate the results in a papyrus and 2000 years later the archaeological team reads (distances translated into modern units): range = 0.4 km; angle of launch = π/5 rad; landing height = launch height. what is the initial velocity of launch of the boulders if air resistance is negligible?

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?

How do we measure or think of speed in the united states?