Answer:
the correct statement is
* atoms cannot be created or destroyed
Explanation:
The Datlon atomic model was proposed in 1808 and represents atoms as the smallest indivisible particle of matter, they were the building blocks of matter and are represented by solid spheres.
Based on the previous descriptive, the correct statement is
* atoms cannot be created or destroyed
Answer:
The workdone by Jack is
The workdone by Jill is
The final velocity is
Explanation:
From the question we are given that
The mass of the boat is
The initial position of the boat is
The Final position of the boat is
The Force exerted by Jack
The Force exerted by Jill
Now to obtain the displacement made we are to subtract the final position from the initial position
Now that we have obtained the displacement we can obtain the Workdone
which is mathematically represented as
The amount of workdone by jack would be
The amount of workdone by Jill would be
According to work energy theorem the Workdone is equal to the kinetic energy of the boat
Time taken by the ball to reach the ground is 1.8s.
<h3>What is free falling?</h3>
When an object is released from rest in free air considering no friction, the motion is depend only on the acceleration due to gravity, g.
A ball is thrown directly downward with an initial speed of 7.30 m/s, from a height of 29.0 m
Using the second equation of motion,
s = ut + 1/2 at²
Plug the values, we get
29 = 7.3t + 1/2 x9.81t²
4.905t² + 7.3t -29 =0
t =1.79871 or −3.28699
As time can't be negative, time taken to strike the ground is approximately 1.8 s.
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Answer:
<h3>Chest pain can have causes that aren't due to underlying disease. Examples include heavy lifting, weight lifting, trauma to the chest or swallowing a large piece of food.</h3>
The vertical weight carried by the builder at the rear end is F = 308.1 N
<h3>Calculations and Parameters</h3>
Given that:
The weight is carried up along the plane in rotational equilibrium condition
The torque equilibrium condition can be used to solve
We can note that the torque due to the force of the rear person about the position of the front person = Torque due to the weight of the block about the position of the front person
This would lead to:
F(W*cosθ) = mgsinθ(L/2) + mgcosθ(W/2)
F(1cos20)= 197/2(3.10sin20 + 2 cos 20)
Fcos20= 289.55
F= 308.1N
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