A=ω²r=0.8²*3.2=2.0 m/s²
v=ωr, then ω=v/r;
ω=2.6/3.2=0.8 rad/s
When a battery is connected to a circuit, the electrons from the anode travel through the circuit toward the cathode in a direct circuit. The voltage of a battery is synonymous with its electromotive force, or emf. This force is responsible for the flow of charge through the circuit, known as the electric current.
Explanation:
Mass of the diskshaped grindstone, m = 1.1 kg
Radius of disk, r = 0.09 m
Angular velocity,
Time, t = 42.4 s
We need to find the frictional torque exerted on the grindstone. Torque in the rotational kinematics is given by :
I is moment of inertia of disk,
So, the frictional torque exerted on the grindstone is .
You are sitting at the center of a large turntable at an amusement park as it is set spinning freely. You decide to crawl towards the edge of the turntable. Rotational speed will decrease
There is no external torque
hence , the angular momentum of the table is conserved
L (initial) = L ( final)
since , L = m*v*r
where
m = mass
v = velocity
r = radius
If the person is crawled towards the outer rim, then the rotational inertia of the turntable will increase. In order to conserve the angular momentum , its rotational speed will decrease as mass and radius cannot be altered .
To learn more about torque here :
brainly.com/question/19104073
#SPJ4
Answer:
P = 104 kPa
Explanation:
a) To know if the pressure is higher or lower than the atmospheric, we only have to see the tubes if the right side is higher the pressure is higher than the atmospheric, otherwise it is lower.
b) The pressure in a system is
P = + ρ g (Y2-y1)
Where is the atmospheric pressure in the open part of the tuno,ρ is the liquid density and (y2-y1) is the difference height between the two sides of the tube.
Let's reduce to SI units
(y2-Y1) = 30 mm (1m / 1000 mm) = 30 10-3 m
= 100 KPa = 100 10 3 Pa
Let's calculate the pressure
P = + 13.6 9.8 30 10⁻³
P = 100 10³ + 3,998
P = 103,998 Pa
P = 104 kPa