Answer:
Maximum acceleration will be equal to 
Explanation:
We have given coefficient of kinetic friction 
And coefficient of static friction 
Acceleration due to gravity 
When truck moves maximum force will be equal to 
It is given that half of the weight is supported by its drive wheels
So force required 
From newtons law maximum acceleration will be equal to 
We know that d=m/v where d is density, m is mass and v is volume. Lets transform formula to get v in times of d and m

Now we have to substitute our data to formula
V=

ml - its the answeer
Answer:
No Refraction takes places
Explanation:
When light travels from one medium to another at an angle of incidence 0 degree then no refraction takes place .
It is because according to Refraction law
sini =
sinr
where
are the refractive index of medium of incidence and medium of refraction .
When i = 0 , left side of the equation becomes 0 and thus r (angle of refraction) must be zero. So No refraction takes place
Answer:
0.53 N, 25.6°
Explanation:
side of triangle, a = 1.2 m
q = 7 μC
q1 = - 8 μC
q2 = - 6 μC
Let F1 be the force between q and q1
By using the coulomb's law


F1 = 0.35 N
Let F2 be the force between q and q2
By using the coulomb's law


F2 = 0.26 N
Write the forces in the vector form



Net force


Magnitude of the force

F = 0.53 N
Direction of force with x axis

θ = 25.6°
I believe that it is called refracting...