Its bituminous coal good luck :;;;;;;)
Answer:

Explanation:
For a charge moving perpendicularly to a magnetic field, the force experienced by the charge is given by:

where
q is the magnitude of the charge
v is the velocity
B is the magnetic field strength
In this problem,



So the force experienced by the electrons is

Answer:
Part a)

Part c)

This mean the truck is decelerating and its speed is decreasing
Part e)

Part f)

Explanation:
Part a)
Speed of the truck is given as

as we know that
1 km = 1000 m
1 h = 3600 s
so we will have


Part c)
Average acceleration is given as

now we have


Part e)
as we know that it is uniform acceleration
so we can say



Part f)
distance traveled by the truck is given as



Answer:
(a). The initial velocity is 28.58m/s
(b). The speed when touching the ground is 33.3m/s.
Explanation:
The equations governing the position of the projectile are


where
is the initial velocity.
(a).
When the projectile hits the 50m mark,
; therefore,

solving for
we get:

Thus, the projectile must hit the 50m mark in 1.75s, and this condition demands from equation (1) that

which gives

(b).
The horizontal velocity remains unchanged just before the projectile touches the ground because gravity acts only along the vertical direction; therefore,

the vertical component of the velocity is

which gives a speed
of

