Force vector is given as
now we need to find the magnitude of this force
as we know that
so here we will find the net force
so it is having magnitude as 35.2 N
Answer:
(a) 41.75m/s
(b) 4.26s
Explanation:
Let:
Distance, D = 89m
Gravity, = 9.8 m/
Initial Velocity, = 0m/s
Final Velocity, = ?
Time Taken, = ?
With the distance formula, which is
D = +
and by substituting what we already know, we have:
89 = ×9.8×
With the equation above, we can solve for :
Now that we have solved , we can use the following velocity formula to solve for :
, where is also equals to , so we have
By substituting , , and ,
We have:
Answer:
Explanation:
Given:
- mass of rocket,
- time of observation,
- mass lost by the rocket by expulsion of air,
- velocity of air,
<u>Now the momentum of air will be equal to the momentum of rocket in the opposite direction: </u>(Using the theory of elastic collision)
That is false the part of the electromagnetic spectrum that you can see is visible light
Answer:
32I
Explanation:
Data provided in the question:
Rotational inertia of a sphere about an axis through the center = I
Now,
Let the radius of the sphere be 'R'
also,
Rotational inertia = MR²
Here,
M is the mass
Mass = Density ÷ Volume
Volume of sphere =
Therefore,
M = Density ×
Thus,
I =
Now for the sphere of radius twice the radius i.e 2R
Volume =
Since the density is same
Mass =
Thus,
I' =
or
I' = 8 × 4 ×
or
I' = 32I