Misconception about falling objects
1 answer:
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Answer:
You are asked to design a cylindrical steel rod 50.0 cm long, with a circular cross section, that will conduct 170.0 J/s from a furnace at 350.0 ∘C to a container of boiling water under 1 atmosphere.
Explanation:
Given Values:
L = 50 cm = 0.5 m
H = 170 j/s
To find the diameter of the rod, we have to find the area of the rod using the following formula.
Here Tc = 100.0° C
k = 50.2
H = k × A ×
Solving for A
A =
A =
A = = 6.77 ×
m²
Now Area of cylinder is :
A = d²
solving for d:
d =
d = 9.28 cm
The first thing you should know is that acceleration is a vector, therefore, it has magnitude, and direction.
By definition, we have that the vector acceleration is given by:
Where,
dv/dt: derived from the velocity vector with respect to time,
Therefore, the units of the vector acceleration are:
The symbol of acceleration is:
Answer:
The statements about acceleration that are true are:
a. the si units of acceleration are m/s2.
b. for acceleration, you must have a number, a unit, and a direction.
d. the symbol for acceleration is (True, only if the symbol is the same as above)