ACTIVITY 3. Given the following data table, solve for mean, standard deviation and variance. Then write the correct measurement of the physical quantity.
Table 1: measurement of volume of a liquid 25.60mL 21.30mL 30.16ml 28.70mL
mean, x=
standard deviation, o = variance, oʻ=
volume of a liquid
Table 2: measurement of mass of an irregularly shaped stone 0.0388 0.040g 0.036g 0.0428
mean,
standard deviation,
variance,
mass of a stone

Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.

Suppose while hauling rocks, you accidentally drop one. it breaks apart in flat, planar sections. what type of rock did you just drop? 20 points

Apositive charge moves in the direction of an electric field. which of the following statements are true? check all that apply. check all that apply. 1.the potential energy associated with the charge decreases. 2. the electric field does positive work on the charge. 3. the electric field does negative work on the charge. 4. the potential energy associated with the charge increases. 5. the electric field does not do any work on the charge. 6. the amount of work done on the charge cannot be determined without additional information.