Answer:
i think it is <u>teacher</u>
Explanation:
because it is noun
Answer:
Work Done = 67.5 J
Explanation:
First we find the value of spring constant (k) using Hooke's Law. Hooke's is formulated as:
F = kx
where,
F = Force Applied = 450 N
k = Spring Constant = ?
x = Stretched Length = 30 cm = 0.3 m
Therefore,
450 N = k(0.3 m)
k = 450 N/0.3 m
k = 1500 N/m
Now, the formula for the work done in stretching the spring is given as:
W = (1/2)kx²
Where,
W = Work done = ?
k = 1500 N/m
x = 70 cm - 40 cm = 0.3 m
Therefore,
W = (1/2)(1500 N/m)(0.3 m)²
<u>W = 67.5 J</u>
The two properties of the leaf that allow it to be affected by air resistance include its distance from the ground and its mass.
<h3>What is mass?</h3>
Mass is a scalar quantity that measures the inertia of a given body and/or object, which represent one of the most important characteristics of the matter.
This measurement (mass) may affect the flight of an object because mass inertia is associated with gravity and does not allow its movement.
In conclusion, the two properties of the leaf that allow it to be affected by air resistance include its distance from the ground and its mass.
Learn more about mass and inertia here:
brainly.com/question/1140505
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B.
the first species that colonize new or undisturbed land
Answer:
The net outward force is exerted on a square window of the house is 
.
Explanation:
Given that,
Pressure = 1.02 atm
External air pressure = 0.910 atm
Distance = 2.03 m
We need to calculate the net outward force
Using formula of force
Where, P = pressure
F = force
A = area
Put the value into the formula
Hence, The net outward force is exerted on a square window of the house is .
