The first law of thermodynamics states that: a) heat can by itself pass from a lower temperature to a higher temperature. b) heat can't by itself pass from a lower temperature to a higher temperature.

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.

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is