An 5-kg object moves around a circular track of a radius of 18 cm with a constant speed of 6 m/s. Find (a) The magnitude and direction of the acceleration of the object. (b) The net force acting upon the object causing this acceleration.

What is the fate of the electrons that interact with a specimen in an electron microscope?

Air initially at 0.75 bar, 1000 k, and occupying a volume of 0.12 m^3 undergoes two processes. process 1-2: the air is compressed isothermally until the volume is halved. process 2-3: the air undergoes a constant pressure process until the volume is halved again. assume ideal gas behavior. a) determine the mass of the air, in kg. b) the work and the heat transfer for each of the two processes, in kj. (100 kj = 1 bar . m^3)

A15.75-g piece of iron absorbs 1086.75 joules of heat energy, and its temperature changes from 25°c to 175°c. what is the specific heat capacity of iron?