Answer:
The magnitude of the force of friction equals the magnitude of my push
Explanation:
Since the crate moves at a constant speed, there is no net acceleration and thus, my push is balanced by the frictional force on the crate. So, the magnitude of the force of friction equals the magnitude of my push.
Let F = push and f = frictional force and f' = net force
F - f = f' since the crate moves at constant speed, acceleration is zero and thus f' = ma = m (0) = 0
So, F - f = 0
Thus, F = f
So, the magnitude of the force of friction equals the magnitude of my push.
Answer:
Explanation:
F = Shearing force = 420 N
= Initial length = 2.6 cm
d = Diameter = 3.6 cm
r = Radius =
E = Young's modulus =
A = Area =
Change in length is given by
The shear deformation of the vertebra is
When balanced forces act on an object at rest, the object will not move. If you push against a wall, the wall pushes back with an equal but opposite force. Neither you nor the wall will move. Forces that cause a change in the motion of an object are unbalanced forces.
Uneven heating is what causes the temperature differences
Answer:
F = 5.83 10⁻¹⁷ N
Explanation:
The electric force is given by
F = k q₁ q₂ / r²
With Gauss's law electric field flow is equal to the charge inside the Gaussian surface, if we make a spherical surface around each drop, the force independent of small deformations due to air resistance
q₁ = q₂
F = 8.99 10⁹ (29 10⁻¹²)² / (0.36 10⁻²)²
F = 5.83 10⁻¹⁷ N
As the two drops have a charge of the same sign they repel