The intensity of light hitting an object, l, varies inversely with the square of the distance, d, between the light source and the illuminated object. which of the following expresses this mathematically? (the term k is a constant.) l = d/k ld2 = k l = d2/k l = kd2

What is the definition of exponential decay?

When 142 is added to a number the result is 64 more times the number my options are 35 37 39 41

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)