Answer:
laws
Explanation:
without laws the country wouldn't be right
Answer:
The majority of research examining food insecurity in general and its effects on health outcomes has concentrated on children. This research has found that food insecurity is associated with increased risks of some birth defects, 5 anemia, 6,7 lower nutrient intakes, 8 cognitive problems, 9 and aggression and anxiety.
Explanation:
Answer:
Option D: Handel's Messiah is a sacred oratorio.
Explanation:
Oratorio is defined as a large-scale narrative musical work for orchestra and voices, especially on sacred theme. Handel composed Messiah in 1741 which is an English-language oratorio. Handel in early years of his work established himself for his work for Italian opera but later in 1730's he turned into English oratorio because of the change in public taste. Messiah was his sixth work which he had composed for modest vocal and instruments, however, after his death this work is adopted on much larger scale with giant orchestra and choirs.
Explanation:
KEY POINTS
Understanding work is quintessential to understanding systems in terms of their energy, which is necessary for higher level physics.
- Work is equivalent to the change in kinetic energy of a system.
- Distance is not the same as displacement. If a box is moved 3 meters forward and then 4 meters to the left, the total displacement is 5 meters, not 7 meters.
Here are a few example problems:
(1.a) Consider a constant force of two newtons (F = 2 N) acting on a box of mass three kilograms (M = 3 kg). Calculate the work done on the box if the box is displaced 5 meters.
(1.b) Since the box is displaced 5 meters and the force is 2 N, we multiply the two quantities together. The object’s mass will dictate how fast it is accelerating under the force, and thus the time it takes to move the object from point a to point b. Regardless of how long it takes, the object will have the same displacement and thus the same work done on it.
(2.a) Consider the same box (M = 3 kg) being pushed by a constant force of four newtons (F = 4 N). It begins at rest and is pushed for five meters (d = 5m). Assuming a frictionless surface, calculate the velocity of the box at 5 meters.
(2.b) We now understand that the work is proportional to the change in kinetic energy, from this we can calculate the final velocity. What do we know so far? We know that the block begins at rest, so the initial kinetic energy must be zero. From this we algebraically isolate and solve for the final velocity
The difference is that machines transform energy to do work, while mechanisms so not necessarily perform this function.