The reason that you need a helper when backing a loaded
truck is because the mirrors of the truck doesn’t let you see directly behind
its trailer as it is big enough that it hides the back view, preventing you to
see it.
Complete question:
A casting with a mass of 500 kg rests on a surface with a slope of 20° to the horizontal. The coefficient of friction is 0.25.
Calculate;
(a) the component of the weight of the object perpendicular to the surface
(b) the component of the weight of the object parallel to the surface
Answer:
(a) the component of the weight of the object perpendicular to the surface is 4,604.5 N
(b) the component of the weight of the object parallel to the surface is 1,675.9 N
Explanation:
Given;
mass of the casting, m = 500 kg
angle of inclination of the casting, θ = 20⁰
the coefficient of friction, k = 0.25
(a) the component of the weight of the object perpendicular to the surface;
F⊥ = mgcosθ
F⊥ = 500 x 9.8 x cos20
F⊥ = 4,604.5 N
(b) the component of the weight of the object parallel to the surface
F|| = mgsinθ
F|| = 500 x 9.8 x sin(20)
F|| = 1,675.9 N
Answer:
(C) Wild guesses should never be made in formulating strategies, but reasonable assumptions based on available information must always be made.
Explanation:
Wild guesses is a guess based on no knowledge or information, it's a rough estimate without authentic evidence, Formulating strategies is a crucial and important task which should be taken seriously.
When Formulating Strategies reasonable assumptions based on available information must always be made, and not Wild guesses.
Pioneer Observations, researchs, informations and knowledge must be addressed before any strategy is formed.
In the scenario in where it has been said that over time the Americans' expectations of the government have then generally increased. I'm not sure but I hope this is the right answer and would be of big help then.
The correct answer is that the case fatality rate of the Pacific Pox must be high.
A case fatality rate is the ratio of deaths due to a certain disease (throughout the duration of the disease in question). In this scenario, since there are no survivors left, the proportion of deaths among the people who had this disease is obviously rather high.
