To check the effect of cold temperature on the elasticity of two brands of rubber bands, one box of brand a and one box of brand b rubber bands are tested. 10 bands from the brand a box are placed in a freezer for 2 hours and 10 bands from brand b are kept at room temperature. the amount of stretch before breakage is measure on each rubber band, and the mean for the cold bands is compared to the mean for the others. is this a good experimental design? a. no, because the means are not proper statistics for comparisonb. no, because more than 2 bands should be usedc. no, because more temperatures should be usedd. no, because temperature is confounded with brande. yes

no becase temperature is confounded with brand E

Step-by-step explanation:

0.6

39mph

step-by-step explanation:

step-by-step explanation:

we can use this expression to calculate the energy gain as a particle moves with a field or the energy loss as it moves against it. (note that it is also used to define the electron-volt, a unit of energy equal to that gained by an electron as it falls through a pd of 1 v, i.e. w = 1 ev = 1.6 10-19 c 1 v = 1.6 10-19j).in fact this expression is really nothing more than the statement that potential is the potential energy per unit charge. in this case, v= w/qis simply stating that the change in potential energy(or work done) per unit charge is equal to the change in potential (or potential difference), v.student questions: uniform electric fields2electron beamcathode+5 kvanode0 v