A curved steel ball forms image of an object at 21 cm behind from face one and at 7 cm behind from opposite face. Find the radius of curvature of the ball.

What is tan(61)? а. 1.80 b. 0.49 c. 0.61 d. 0.87

The pressure, volume, and temperature of a mole of an ideal gas are related by the equation pv = 8.31t, where p is measured in kilopascals, v in liters, and t in kelvins. use differentials to find the approximate change in the pressure if the volume increases from 14 l to 14.6 l and the temperature decreases from 375 k to 370 k. (round the answer to two decimal places.)

What are the applications of electromagnetic waves