Answer:
Fx = -7042.86N (Taking the right as positive sense of motion)
Fy = 2154.29N.
Explanation:
The full solution can be found in the attachment below. The approach to the solution involves the summation of the respective components of the momentum along the horizontal and vertical axis.
To the right is taken as positive sense of motion and the left as negative sense of motion.
The basic statement of Newtown's second law have been used which is
M(v2 – v1) = Ft
See the attachment below for the complete calculation procedure.
Electric current is measured in Ampere
Answer:
P = 52 kPa
Explanation:
Hidrostatic pressure is defined as the product of the height of liquid (h) by its specific weight (ρ) and by the acceleration of gravity (g).
In the first scenario, the atmospheric pressure is:
In the second scenario, h = 4.2 + 1 m. Therefore, the pressure at the bottom of the barrel is:
The pressure on the bottom when water is added to fill the pipe to its top is 52 kPa.
Answer:
(A) Strain = 0.0012
(b) Stress
(c) Young's modulus
Explanation:
Mass of the rock m = 75 kg
So weight of the rock
Length of the rope l = 18 m
Diameter of the rope d = 11 mm
Change in length of rope
So radius r = 5.5 mm = 0.0055 m
Cross sectional area
(a) Strain is equal to ratio change in length to original length
So strain
(b) Stress
(c) Young's modulus is equal to ratio of stress and strain
So young's modulus
A.
By absorbing energy, electrons are able to transition to higher energy levels.