Answer:
The speed of the rod's center of mass after the collision is 6 m/s.
Explanation:
Given that,
Mass of rod = 4 kg
Length l = 1.8 m
Moment of inertia 
Mass of puck = 0.4 kg
Initial speed= 20 m/s
Distance = 0.3 m
Final speed = 10 m/s
(a). We need to calculate the speed v of the rod's center of mass after the collision
As there is no external force acting on the system so, linear and angular momentum of the system will be conserved.
Using conservation of momentum
Put the value into the formula
Hence, The speed of the rod's center of mass after the collision is 6 m/s.
Answer: I think the answer is C
Larry is an architectural drafter Francis is an architect Meka is a construction manager and Lacey's interior designer.
Answer:
t = 2.26 10⁵ s
Explanation:
Let's calculate the flow of water that comes out of the hose
Q = A v
The area of a circle is
A = π r²
Q = π r² v
Let's reduce the units to the SI system
d = 5/8 in (2.54 10⁻² m / in) = 1.5875 10⁻² m
r = d / 2 = 0.79375 10⁻² m
Q = π (0.79375 10⁻²)² 0.59
Q = 1.1678 10⁻⁴ m³ / s
Let's calculate the volume of the pool
V = π R² h
V = π (4.6 / 2)² 1.6
V = 26.59 m³
Let's use a rule of proportions (rule of three), to find the time
t = 26.59 (1 / 1.1678 10⁻⁴)
t = 22.77 10⁴ s
t = 2.26 10⁵ s
Based on the number of positive and negative charges
<u>Explanation</u>:
- In a positive charge particle, the number of proton is higher than the number of electron. Due to this fact alone, we can come to the conclusion that positive charge consists of more number of protons than electrons.
- In a negative charge particle, the number of electron is higher than the number of proton. Due to this fact alone, we can come to the conclusion that negative charge consists of more number of electrons than protons.
Very very roughly, an Earth month.
The Sun isn't solid, so it doesn't all have to rotate at the same rate. Different latitudes actually rotate at different speeds. One complete rotation is about 24 days at the Sun's equator, but 35 days near the poles !
