Answer:
X, Y, Z, W
Explanation:
W has a current of 0 so it has no magnetic field.
X has the most loops (besides W) and the most current so it is the strongest.
Y and Z are the same except Y has more loops so it is stronger than Z.
Also just took the quiz
Answer:
The new temperature is 
Explanation:
From the question we are told that
The coefficient of linear expansion is 
The temperature is 
The radius of the frames is 
The new radius is 
The change in radius is mathematically represented as
substituting values
The increase in radius can also be mathematically represented as
Where 
is the the new temperature , making it the subject we have
substituting value
The Doppler effect says that if the source of a sound wave and the observer are moving further apart, the frequency of the sound as the observer hears it will decrease. This can be caused by the source moving away from the observer or the observer moving away from the source. Both C and D will cause the decrease in frequency.
Choice F
Microtrauma is the answer
Answer:
(a) 142.5 rad/s
Explanation:
Torque = 45 Nm
Moment of inertia = 30 kgm^2
w0 = 0, t = 95 second
(a) Let it is rotating with angular speed w.
Torque = moment of inertia x angular acceleration
45 = 30 x α
α = 1.5 rad/s^2
Use first equation of motion for rotational motion
w = w0 + α t
w = 0 + 1.5 x 95
w = 142.5 rad/s
(b) if he hold rocks, then the moment of inertia change and then angular acceleration change and then final angular velocity change.
