Which of the following are true about mass? check all that apply

a) mass changes as distance from the center of the planet changes.
b) mass determines how much an object will accelerate in response to an applied force.
c) mass changes in response to buoyant forces.
d) the size of gravitational forces depends on mass.

Aweight lifter raises a 1600 n barbell to a height of 2.0 meters. how much work was done? w = fd question 6 options: 3000 joules 30 joules 320 joules 3200 joules

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.