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Mkey [24]
2 years ago
14

Match the distance/time graphs to the motion description.

Chemistry
1 answer:
Neporo4naja [7]2 years ago
6 0
Graph A represents constant speed so the answer for this is the car is moving at constant speed. Time is increasing to the right, whereas distance is increasing constantly with time. 
Graph B represents the car is coming back because from the starting point it is decreasing because while velocity is +, the magnitude keeps on lowering.
Graph C represents the car is stopped since it time increasing to the right but there is no change in speed.
Graph D represents the speed of the car is decreasing because distance in each time interval is decreasing.
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A pharmaceutical company claimed that experiments showed that its drug could effectively reduce the growth of cancer cells by 35
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Answer :  The labs were unable to reproduce the pharmaceutical company’s data.

Explanation : Any scientific claim must have reproducible experimental data. In this case, when the pharmaceutical company has the claim of reducing the cancer growth cells by 35% then by using the same manufacturing procedure for the drug and lab should be able to get this result. But they failed to match up with the results which clearly indicates that the labs were not able to produce the same results and hence they concluded that the pharmaceutical company's claims were invalid.

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2 years ago
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An 80 kg long jumper in flight accelerates at a rate of 10 m/s^2. What is the force of the long jumper
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Answer:

F = 800 N

Explanation:

Given data:

Mass = 80 Kg

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Force = ?

Solution:

Formula:

<em>F = m × a </em>

F = force

m = mass

a = acceleration

Now we will put the values in formula:

<em>F = m × a </em>

F = 80 kg <em>× </em>10 m/s²

F = 800 kg.m/s²

kg.m/s² = N

F = 800 N

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