Answer:
Explanation:
height of the building h = 15 m
initial vertical velocity u = 0
v² = u² + 2 g h
u = 0 , final velocity after falling height h
h = 15
v² = 2 x 9.8 x 15
v = 17.14 m /s
. Time of fall be t
h = 1/2 g t²
15 = 1/2 x 9.8 x t²
t = 1.749 s
This time will be required for truck to come under the building .
speed = distance / time
distance = speed x time
= 22 x 1.749
38.5 m
Truck should be at a distance of 38.5 m . when the stuntman starts falling .
Answer:Increase by a factor of 25
Explanation:
We know that magnetic force is proportional to
where r is the distance between them
Thus
Where =magnetic field
If distance is reduced by a factor of then force must increase by a factor of because
so
I'm sorry but I'm abouta fail a test if I dont d ig.i this for the points
Answer:
б /
Ф ( б / )
Explanation:
<u>Develop a suitable set of dimensionless parameters for this problem</u>
The set of dimensionless parameters for this problem is :
б /
Ф ( б / )
and they are using the pi theorem, MLT systems
attached below is a detailed solution
Answer:
Explanation:
Subtract both sides by :
Divide both sides by -2*a:
Add both sides by :
Subtract both sides by :