Answer:
Weight = 6.919 n
Buoyant force = 4.397 N
Apparent weight = 2.522 N
Explanation:
radius, r = 0.0199 m
density of platinum = 2.14 x 1064 kg/m^3
density of mercury = 1.36 x 1064 kg/m^3
Weight of sphere= volume of sphere x density of platinum x g
= 4/3 x 3.14 x (0.0199)^3 x 2.14 x 10^4 x 9.8 = 6.919 N
Buoyant force acting on sphere = Volume of sphere x density of mercury x g
= 4/3 x 3.14 x (0.0199)^3 x 1.36 x 10^4 x 9.8 = 4.397 N
Apparent weight = True weight - Buoyant force = 6.919 - 4.397 = 2.522 N
Answer:
Force, F = 1 N
Explanation:
We have
Mass of a box is 1 kg
Acceleration with which it is pushed is 1 m/s²
It is required to find the force acting on the box.
Force, F = ma
So, the force of 1 N is acting on the box.
<h3><u>Answer;</u></h3>
producing a path for current to flow
<h3><u>Explanation;</u></h3>
- An AC generator is a device that converts mechanical energy into electrical energy using the principle of electromagnetic induction.
- <em><u>Slip rings are two hollow rings to which two ends of the armature coil are connected. These rings rotate with the rotation of the coil. They function to to allow for electrical contact with the brushes.</u></em>
- Slip rings therefore, provide a means for connecting the rotating armature to an external circuit.
Two parallel coils separated by a distance equal to the radius of the coils are known as Helmholtz coils. They are frequently used because they generate a magnetic field that is uniform over an appreciable region about its midpoint.
<span>
</span>
