Answer:489 Revolutions
Explanation:
Given
Angular deceleration
Given wheel angular velocity =96 rad/s when machine is turned off
time taken by machine to reach zero angular velocity
0=96+(-1.5)t
t=64 sec
angular displacement is given by
For revolutions =
Answer:
The correct answer is - A matter that has an ordered arrangement of atoms, molecules, or ions.
Explanation:
In physics, a crystal is a type of solid matter in which a highly arranged molecule or atoms present to form a lattice that extended in all directions. It is a lightweight clear solid which is normally is colorless.
It can be cubic, hexagonal, triclinic, monoclinic, orthorhombic, tetragonal, and trigonal that are ordered arrangments. Its internal symmetry is visible to its surface.
Answer:
p = 1.6 N•s = 1.6 kg•m/s
Explanation:
The impulse to the west removed all eastbound momentum of 0.41(2.5) = 1.025 kg•m/s
The kick also increased the north momentum by 0.41(3.1) = 1.271 kg•m/s
as momentum is a vector, we need to vector add these two.
p = √(1.025² + 1.271²) = 1.6328...
Answer:
w = 7.89 10⁻² rad/s
Explanation:
We will solve this exercise with the conservation of the annular moment, let's write it in two moments
Initial. With the insect in the center
L₀ = I w₀
End with the bug on the edge
= I w + w
The moments of inertia are
For a rod
I = 1/3 M L²
For the insect, taken as a particle
I = m L²
The system is formed by the rod and the insect, this is isolated, therefore the external torque is zero and the angular momentum is conserved
L₀ =
I w₀ = I w + w
w = I / (I + ) w₀
w = I / (I + m L²) w₀
Let's calculate
w = 1.43 10⁻³ / (1.43 10⁻³ + 5 10⁻³ 0.620²)² 0.185
w = 1.43 10⁻³ / 3.352 10³ 0.185
w = 7.89 10⁻² rad/s
<h3><u>Answer</u> :</h3>
➝ Density of block = 10.5 g/cm³
➝ Volume of block = 30 cm³
We have to find mass of block
➠ Density is defined as mass of substance per unit volume