Answer:
The presumption of 'innocence of defendant'
Explanation:
Prosecution refers to the conduct of legal proceedings against defendant (accused), for a criminal behaviour.
Prosecution has the responsibility to overcome the presumption of innocence of defendant, proving the latter guilty - based on supporting evidences.
Answer:
mass of the scale is 7.44 g
Explanation:
As we know that the meter scale is balanced at 45.5 cm mark when two coins are placed at 12 cm mark
now we can say that the torque due to weight of the coin is balanced by the weight of scale above the knife edge because the scale remains horizontal
so we will have
Answer:
d
because the animal with sweat gland it easy to adopt the environment
Let's call
N=Normal force.
m*g=Weight.
F= Force needed to move the block.
f = friction force.
k = static friction coefficient.
For balance:
N = mg and F = f
By definition
f=k*N.
Clearing this last expression:
k=f/N.
Substituting:
k=f/N=F/m*g=(47)/((13)*(9.8))=0.37
the coefficient of static friction between the box and floor is 0.37
Answer:
φ = B sin (2π n/a x)
Explanation:
In quantum mechanics when a particle moves freely it implies that the potential is zero (V = 0), so its wave function is
φ = A cos kx + B sin kx
we must place the boundary conditions to determine the value of the constants A and B.
In our case we are told that the particle cannot be outside the boundary given by x = ± a / 2
therefore we must make the cosine part zero, for this the constant A = 0, the wave function remains
φ = B sin kx
the wave vector is
k = 2π /λ
now let's adjust the period, in the border fi = 0 therefore the sine function must be zero
φ (a /2) = 0
0 = A sin (2π/λ a/2)
therefore the sine argument is
2π /λ a/2 = n π
λ= a / n
we substitute
φ = B sin (2π n/a x)