Answer:
Hold on Ill answer it..When do u need it by
Explanation:
<span>The side of the worm that faces up when placed in the
tray for dissection is the smoother side.
</span>You can observe the organs of these tiny creatures by dissecting a preserved earthworm<span>. In dissecting
a worm, </span><span>lay the worm on your </span>dissecting
tray<span> <span>with its dorsal side facing up.</span></span>
Answer:
3.97305 m
Explanation:
a = Acceleration due to gravity = 9.81 m/s²
If a jump lasts for 1.8 seconds this means that from the moment when the person leaves the ground till the person touches the ground again it takes 1.8 seconds. So, maximum height reached will be at half the time of the jump i.e., 0.9 seconds.
u = Initial velocity = 0
Equation of motion

So, height of the jump is 3.97305 m.
Answer:
2587.2 J.
Explanation:
From potential energy,
The work done to lift the chain = potential energy of the chain.
W = mgh............... Equation 1
Where W = work done to lift the chain, m = mass of the chain, g = acceleration due to gravity of the chain, h = height of the chain.
But,
m = m'd............... Equation 2
Where m' = density of the chain, d = length of the chain.
Substitute equation 2 into equation 1
W = m'dgh................ Equation 3
Given: m' = 2 kg/m, d = 12 m, h = 11 m, g = 9.8 m/s²
Substitute into equation 3
W = 2(12)(11)(9.8)
W = 2587.2 J.