Answer:
the final speed of the stool is 3.6 rad/s
Explanation:
As we know that there is no external torque on the system
So we can use concept of angular momentum conservation
So we will have
now we will have
So the final speed of the stool is 3.6 rad/s
Answer:
P =105.44 W
Explanation:
Given that
D= 10 cm ,L= 60 cm
d= 0.1 cm ,B= 6.4 mT
ρ= 1.7 x 10⁻⁸ Ω · m
The number of turns N
N= L/d
N= 60/0.1 = 600 turns
Length of wire
Lc= πDN
Lc= 3.14 x 0.1 x 600
Lc=188.4 m
The magnetic filed given as
Now by putting the values
I=5.09 A
The resistance R given as
R=4.07 Ω
Power P
p =I²R
P= 5.09² x 4.07 W
P =105.44 W
Answer:
A spiral galaxy in which Earth is located
Explanation:
Because spiral galaxies are characterized by a distinct flattened spiral disk with a bright center called the nucleus making it lookl ike a hurricane symbol on weather hurricane trackers. Our very own Milky Way is a spiral galaxy and Eaerth is located rigth in their.
Answer:
C. Hot pavement burning your feet
Explanation:
Convection is a type of process where heat travels upwards and cold travels downwards.