Q. no. 8 what is the ratio of the energy per second
radiated by the filament of a lamp at 2500 k to that radiated
at 2000 k, assuming the filament is a black body radiator? [4]

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?

Acompound machine is also called a machine. a. force b. simple c. complex d. directional

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.