Two charged point particle are located at two vertices of an equilateral triangle and the electric field is zero at the third vertex. we conclude: a) the two particles have charges with opposite signs and the same magnitude b) the two particles have charges with opposite signs and different magnitudes c) the two particles have identical charges d) the two particles have charges with the same sign but different magnitudes e) at least one other charged particle is present

What is the conversion factor between kg/m^3 and g/m^3. express your experimental values for the densities in kg/m^3.

True or false: the cycle of seasons on the earth is caused by the tilt of the earth on its axis toward and away from the sun.

Explain the difference between each pair of concepts. a. frequency and relative frequency b. percentage and relative frequency a. select the correct choice below. a. frequency is the total number of observations in a data set. relative frequency is the number of times a particular distinct value occurs. b. frequency is the number of times a particular distinct value occurs. relative frequency is the ratio of the frequency of a value to the total number of observations. c. frequency is the total number of observations in a data set. relative frequency is the ratio of the number of times a particular distinct value occurs to the frequency. d. frequency is the number of times a particular distinct value occurs. relative frequency is the ratio of the frequency of two different values.