Answer:
Magnetism
Explanation:
The carpenter can separate the iron nails from the plastic nails using a magnet. The iron nails have magnetic properties therefore they would be attracted to the magnet living only the plastic nails. This process is known as magnetic separation because it is based on the physical properties of the mixed components separating a mixture of components containing magnetic and non magnetic materials.
Answer:
0.03 T
Explanation:
The magnetic field B at the center of a solenoid is given by B = μ₀Ni/L where
μ₀ = permeability of free space = 4π × 10⁻⁷ H/m, N = number of turns of solenoid = 5000 turns, i = current in solenoid = 5 A and L= length of solenoid. Since we are not given length of solenoid, let us assume it is 1 meter. So, L = 1 m
So, B = μ₀Ni/L
= 4π × 10⁻⁷ H/m × 5000 turns × 5 A/1m
= 4π × 10⁻⁷ H/m × 25000 A-turns/m
= 314159.27 × 10⁻⁷ T
= 0.031415927 T
≅ 0.03 T
Answer:
it shows examples of types of forces
Answer:
18.4 m
Explanation:
The period of a simple pendulum is given by the equation
(1)
where
L is the length of the pendulm
g is the acceleration due to gravity
In this problem, we know that:
N = 13 is the number of oscillations completed by the pendulum
t = 112 s is the time taken to complete those oscillations
So the frequency of the pendulum is:
The period is the reciprocal of the frequency, so for this pendulum:
Now we can use eq(1) to find the length of the pendulum. We know that
Therefore, re-arranging the equation for L, we find:
