Answer:
A is the answer
Inertia is basically the inherent property of a body that makes it oppose any force that would cause a change in its motion.
For example, let's say you roll a ball if it isn't stopped by friction or an obstacle it will continue to move.
Explanation:
Answer:
Speed of an EM wave is different in air and in water.
Explanation:
The speed of an EM wave is different in air and water .
Since the frequency of any EM wave is its characteristic property, therefore wavelength and speed of EM wave Change on changing the medium of propogation.
Also the refractive index of any medium is defined as the ratio between light's speed in vacuum to the light's speed in any medium.
Also ,it can be define as speed of any EM wave in any medium = c/refractive index of medium.
Here, c is the speed of light, .
Answer:
0.68 s
Explanation:
We are given that
Initial velocity of box=
Final velocity of box=v=11.5 m/s
Distance=d=8.5 m
We have to find the time taken by box to slow by this amount.
We know that
Substitute the values
We know that
Acceleration=
Substitute the values
Hence, the time taken by box to slow by this amount=0.68 s
Answer:
a) The magnitude of the magnetic field inside the toroid at the inner radius is
0.000447 T = 0.447 mT
b) The magnitude of the magnetic field inside the toroid at the outer radius is
0.000344 T = 0.344 mT
Explanation:
With a logical assumption that magnetic permeability of vacuum would be used,
the magnetic field at a distance r, from the centre of the loop is given as
B = μ₀I (N/2πr)
B = ?
μ₀ = (4π × 10⁻⁷) H/m
I = 0.739 A
N = 590 turns
For the inner radius,
r = 19.5 cm = 0.195 m
a) B = μ₀I (N/2πr)
B = (4π × 10⁻⁷ × 0.739 × 590) ÷ (2π × 0.195)
B = 0.0004471897 T = 0.000447 T = 0.447 mT
b) Magnetic field at the outer radius
r(outer) = r(inner) + length of the square
r(outer) = 19.5 cm + 5.83 cm = 25.33 cm = 0.2533 m
B = μ₀I (N/2πr)
B = (4π × 10⁻⁷ × 0.739 × 590) ÷ (2π × 0.2533)
B = 0.0003442637 T = 0.000344 T = 0.344 mT
Hope this Helps!!!