Answer:
They measured their train using their handspan
Answer:
15 N
Explanation:
The magnetic force on a piece of current-carrying wire is given by:

where
I is the current in the wire
L is the length of the piece of wire
B is the magnetic field strength
is the angle between the direction of B and I
In this problem:
I = 10 A
B = 0.3 T
L = 5 m

Substituting into the equation, we find

Molecular structure of the primary cell wall in plants. Up to three strata or layers may be found in plant cell walls: The middle lamella, a layer rich in pectins. This outermost layer forms the interface between adjacent plant cells and glues them together.
The final position of the car is 385 m.
Explanation:
We know the formula :
s =

where,
s = distance
u = initial velocity = 5.1 m/s
t = time taken = 14 sec
a = acceleration = 3.2 m/
Solving:
s = 5.1* 14 +
* 3.2 * 
∴ s = 385 m
Hence the final position of the car is 385 m.