A particle with charge 2-µC is placed at the origin, an identical particle, with the same charge,
is placed 2m from the origin on the x axis, and a third identical particle, with the same charge,
is placed 2m from the origin on the y axis. The magnitude of the force on the particle at the
origin is:
A. 9.0 × 10-3 N
B. 6.4 × 10-3 N
C. 1.3 × 10-2 N
D. 1.8 × 10-2 N
E. 3.6 × 10-2 N

Asteam power plant operates on an ideal reheat rankine cycle between the pressure limits of 15 mpa and 10 kpa. the mass flow rate of steam through the cycle is 12 kg/s. steam enters both stages of the turbine at 500°c. if the moisture content of the steam at the exit of the low-pressure turbine is not to exceed 10 percent, determine (a) the pressure at which reheating takes place, (b) the total rate of heat input in the boiler, and (c) the thermal efficiency of the cycle. also, show the cycle on a t-s diagram with respect to the saturation lines. (2.15 mpa; 45.0 mw; 42.6%)

Unpolarized light of intensity i_0=750w/m^2 is incident upon two polarizers. after passing through both polarizers the intensity is i_2=280w/m^2. (a) what is the intensity of the light after it passes through the first polarizer in w/m^2? (b) write an equation for the angle between the polarizers in terms of the initial (i_0) and final (i_2) intensities. (c) find the angle between the polarizers in degrees.

What properties of a moving object are used in determining the object's energy of motion