Answer:
19.9 N/m
Explanation:
From the question,
Applying Hook's law
F = Ke.................. Equation 1
Where F = Force on the spring, k = spring constant, e = extension
But the force on the spring is the weight of the mass
Therefore,
mg = ke.................. Equation 2
Where m = mass. g = acceleration due to gravity
make e the subject of the equation
e = mg/e................ Equation 3
Given: m = 455 g = 0.455 kg, e = 22.4 cm = 0.224 m,
Constant: g = 9.8 m/s²
Substitute these values into equation 3
e = (0.455×9.8)/0.224
e = 19.9 N/m
Apparent depth is dangerous for swimmers because
<span> When you look vertically downwards into a </span>swimming<span> pool full of water the bottom seems closer than it. </span>If the pool is really deep and it doesn't look deep to you that's not good cuz if you don't know how to swim in deep water you might drown.
Hope this helps ;)
B and D
Because these two points are below equator on sun is shining directly above equator which is experiencing summer