Two or more elements that are chemically combined
A is the best answer. This is what makes the magnetic field of the magnet.
Answer:
σ = 1.52 10⁻¹² 1 /Ω m
Explanation:
The current density is linear in the atmosphere, so it complies with Ohm's law
J = σ E
Where J is the current density, sigma is the electrical inductance and E is the electric field
σ = J / E
σ = 7.3 10⁻¹³ / 48
σ = 1.52 10⁻¹² A / V 1 / m
σ = 1.52 10⁻¹² 1 /Ω m
Answer:106.6N
Explanation:
Centripetal force is a force that cause a body to move along a circular path in a field. The body possesses a mass and velocity(since it's moving) and also radius alone the circular path on which it moves.
Given mass (m) = 2kg, velocity (v) = 8m/s and radius (r) = 1.2m
Centripetal acceleration(a)= v²/r
Centripetal force = ma = mv²/r
Substituting this values in the formula above we have;
Centripetal force = 2×8²/1.2m
Centripetal acceleration = 128/1.2
= 106.6N
Answer:
An object's ability to do work is measured by its mechanical energy, or the sum the object's kinetic energy and potential energy. Mechanical energy is due to the position or movement of an object. The formula for mechanical energy is mechanical energy = kinetic energy + potential energy.
Explanation:
Hope this helped, Have a wonderful day!!
