Answer:
For your first question, it is C.
For your second question, it is A.
For your third question, it is A, again.
For your final question, it is B.
Have a wonderful day! :D
Out of all of the following, Iron is a metal.
So the correct answer is B.
Hope this helps,
Davinia.
Answer:
The length of the sling is increased and the linear velocity of the stone stays the same.
Explanation:
Centripetal acceleration is given by
where <em>v</em> is the linear velocity and <em>r</em> is the radius of motion.
In terms of the angular velocity, <em>ω</em>
<em />, since
From the relation, is directly proportional to the square of the velocity and inversely proportional to the radius.
Hence, an increase in linear velocity results in an increase in the centripetal acceleration if the radius is kept constant. A decrease in the radius also causes an increase of the centripetal acceleration.
Answer:
Maximum magnetic field will be 0.288 T
Explanation:
We he given number of turns in solenoid N = 23800
Length of the solenoid l = 1 m
So number of turns per unit length in the solenoid
Maximum current in solenoid i = 100 A
Magnetic field due to solenoid is equal to
As the current is maximum so magnetic field will be also maximum
So maximum magnetic field will be 0.288 T