Plants that died a few thousand years ago.
Test:
Performing a Litmus Test
Result:
Litmus paper gives the user a general indication of acidity or alkalinity as it correlates to the shade of red or blue that the paper turns.
- To test the pH of a substance, dip a strip of litmus paper into the solution or use a dropper or pipette to drip a small amount of solution onto the litmus paper.
- Blue litmus paper can indicate an acid with a pH between 4 and 5 or lower.
- Red litmus paper can show a base with a pH greater than 8.
- If a solution has a pH between 5 and 8, it will show little color change on the litmus paper.
- A base tested with blue litmus paper will not show any color change, nor will an acid tested with red litmus paper register a change in color.
Answer:
In kinematics questions we need to separate the question into different parts if the acceleration changes. Here, there are three time intervals where acceleration is different.
1) a(t) = 96t. We can find the velocity function of the rocket by integrating the acceleration function. Then we can integrate again to find the position function.
'C' is the integration constant. We can find this constant by investigating the initial conditions.
We know that the rocket is initially at rest, so 'C' should be zero.
Again, the rocket started from ground zero, so C = 0.
We should conclude the first part by calculating the final position and final velocity of the rocket.
2) For the second part, the rocket is in free fall, so
The maximum height that the rocket reaches is when its velocity is zero.
So,
The maximum height is
The final positions for the part 2 is
3) With the parachute, the velocity is dropped from -276.4 to 16 in 5 s.
The rocket lands
Acceleration is the way the motion is changing.