Answer:
(a) The current in the wire is 19.89 A
(b) The distance from the wire is 0.159 cm
Explanation:
Given;
magnetic field, B = 2.5 mT
diameter of the wire, d = 1 cm
radius of the wire, r = 0.5 cm = 0.005 m
(a) The current in the wire is calculated as;
(b) The distance from the wire where the magnetic field is 2.5 mT is calculated as;
Answer:
Mass = 10102.04 kilograms.
Explanation:
Given the following data;
Acceleration = 9.8m/s²
Force = 99000N
To find the mass;
Mass = force/acceleration
Mass = 99000/9.8
Mass = 10102.04 kilograms.
Therefore, the mass of the boulder is 10102.04 kilograms.
<u> Focal Length of the lens is 3.846 cm.</u>
Explanation:
Image Distance ( i ) = 4 cm
Object Distance ( o ) = 100 cm
Find,
Focal length =?
Focal length of pair of glasses can be calculated as -
.............<u> ( here 1 / o it's o = object distance )</u>
<u> Focal Length of the lens is 3.846 cm.</u>
Answer:
Answer:
43.4J
Explanation:
We know that
Work done = total heat energy
But work done is force x distance
=> F = 19 x8.6 = 163.4 J
So the total heat. Will be Heat of cube + heat of floor = 163.4J
So that heat of floor will now be
floor = 163.4 J - 120 J = 43.4 Joules
Explanation: