Please helppp Three groups do the same experiment rolling a car through two
photogates. The track is set at the same angle and all other
variables are kept the same for each group. The data is shown in
Figure 2.20. The first group does the experiment in the daylight.
The second group does it under a magnet. The third group does the
experiment in the dark. Group 2 claims that its experiment shows
that magnets make the car go faster. Is their claim supported by
the evidence? Explain why or why not.
Group 1: Time A to B... 0.343, 0346, 0.341, 0.340, 0.349.
Group 2: Time A to B... 0.339, 0.338, 0.345, 0.341, 0.339.
Group 3: Time A to B... 0.341, 0.337, 0.344, 0.340, 0.339.

where is the following

explanation:

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.

aquifers are bounded above and below by impermeable rock. the driving force of groundwater movement in confined aquifers is pressure, rather than gravity.