Two coherent sources whose intensity ratio is 100:1 produce interference fringes. Calculate th ratio of intensities of maxima and minima in the fringe system.​

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?

Player kicks a soccer ball from ground level and sends it flying at an angle of 30 degrees at a speed of 26 m/s. what is the horizontal velocity component of the ball to the nearest tenth of a m/s?

Transfer chemicals from one location to another to weather objects. a-water b-physical weathering c-chemical weathering