Physics, 25.04.2020 01:12 autumnsumrall
An advertisement for a new fish food claims that lab studies show that fish grew three inches in three weeks while eating the food. Travis wondered if the food was worth the extra cost.
To evaluate the claim in the advertisement, Travis should?
A. look at the data for the control group to see how much the fish grew without the new food.
B. check the lab results to see if the researchers changed the dependent variable in the same way.
C. examine the data to find how the researchers changed the variables within the control group.
D. determine if the results show the independent variable changing as the dependent variable was changed.
Answers: 3
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Aballoon is rising vertically upwards at a velocity of 10m/s. when it is at a height of 45m from the ground, a parachute bails out from it. after 3s he opens his parachute and decelerates ata a constant rate 5m/s.when. (a) what was the height of the parachutist above the ground when he opened his parachute? (b)how far is the parachutist from the balloon at t=3s? (c)with what velocity does the parachutist hit the ground? (d)after how long does the parachutist hit the ground after his exist from the balloon?
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If the specific heat of a metal is 0.850 j/g °c, what is its atomic weight?
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