Answer:
a. ρ
b.
Explanation:
a. To find the density of magnetic field given use the gauss law and the equation:
, , Ω, , ,
ρ
ρ
ρ
ρ
b. The electric field can be find using the equation:
Question:
A roller-coaster vehicle has a mass of 500 kg when fully loaded with passengers. If the vehicle has a speed of 20.0 m/s at point A, what is the force exerted by the track on the vehicle at this point?
<em>See attachment</em>
Answer:
33700 Newton
Explanation:
Given
First, we determine the forces acting on mass m.
They are: the force exerted by the track (Fn) and the weight of the vehicle (W)
So, the net force is:
So:
Make Fn the subject
Fnet is calculated as:
--- i.e. the centripetal force
So:
According to the <u>saving of the momentum</u> law, the total momentum <em>before </em>collision equals to the total momentum <em>after </em>collision
After collection, the 2 carts lock together, one body with a mass and velocity
from the definition of the momentum
thus
we calculate the velocity
Objective, and repeatable