Answer:
No. of turns in secondary coil are 5.
Transformer Type: STEP DOWN TRANSFORMER
Explanation:
The relationship of the no. of turns in transformer secondary and primary coils with their voltages is known as the turn ration. The formula for turns ratio is as follows:
Np/Ns = Vp/Vs
where,
Np = No. of turns in primary coil = 40
Ns = No. of turns in secondary coil = ?
Vp = Voltage supplied to primary coil = 120 V
Vs = Voltage output of secondary coil = 15 V
Therefore,
40/Ns = 120 V/15 V
Ns = 40/8
<u>Ns = 5</u>
TYPE OF TRANSFORMER:
Since, this transformer decreases the voltage value at the output. Hence it is a <u>STEP DOWN TRANSFORMER.</u>
Answer:
The total angular momentum of the system is
.
Explanation:
Given that,
Angular speed = 0.841 rad/s
Mass of platform = 72.1 kg
Speed = 1.17 m/s
Mass of poodle = 20.3 kg
Mass of mutt = 18.5 kg
Distance =3/4 of the platform's radius from the center
Mass of disk = 92.5 kg
radius = 1.87 m
Angular momentum is the product of moment of inertia and angular speed.
We need to calculate the angular momentum of person





We need to calculate the angular momentum of platform

Put the value into the formula


We need to calculate the angular momentum of poodle

Put the value into the formula


We need to calculate the angular momentum of mutt



We need to calculate the total angular momentum



Hence, The total angular momentum of the system is
.
Explanation:
<h3>The beam balance is a device used</h3><h3> for the determination of the mass of </h3><h3>a body under gravitation. It consists </h3><h3>of a beam supported at the centre </h3><h3>by an agate knife edge resting on a</h3><h3> support moving inside a vertical </h3><h3>pillar. The beam carries a light</h3><h3>pointer which moves over a scale.</h3>