2. brittany wanted to find out which wheels were best for her skateboard. she purchased 4 sets of new
wheels of different brands. she and a friend set up a course on her driveway. brittany rode through
the course 5 times on each set of wheels. her friend timed her with a stopwatch and recorded the
times. they averaged the times for each brand of wheels.
a. independent variable
b. dependent variable -
c. experimental group -
d. control group -
e. constants -

Lola needs to sign 6 invitations. using stopwatch that measures time to tenths of a second, it takes lola 5.3 seconds to sign her full name. going by the accuracy of the stopwatch, which is the most accurate determination for the number of minutes lola needs to sign all 96 invitations

Graded assignment lab report answer the questions below. which combinations of substances resulted in a chemical change? for each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. make a general statement about the reactivity of the metals in this experiment.

What will happen if two of the base pairs of the stand of the dna are switched