The thermal conductivity of a solid depends upon the solid’s temperature as k = a T+b where a and b are constants. The temperatu
re in a planar layer of this solid as it conducts heat is given by:a. aT+b= x +C2b. aT+ b = C1x^2 +C2c. aT^2+ bT= C1x+ C2d. aT^2+ +bT= C1x^2+ C2e. None of these
1 answer:
You might be interested in
Answer:
Explanation:
Given
--- Initial altitude
-- Altitude after 16.5 seconds
--- Acceleration (It is negative because it is an upward movement i.e. against gravity)
Solving (a): Final Speed of the rocket
To do this, we make use of:
The final altitude after 16.5 seconds is represented as:
Substitute the following values:
and
So, we have:
Collect Like Terms
Make u the subject
Solving (b): The maximum height attained
First, we calculate the time taken to attain the maximum height.
Using:
At the maximum height:
--- The final velocity
So, we have:
Collect Like Terms
Make t the subject
The maximum height is then calculated as:
This gives:
Hence, the maximum height is 1141.07ft